explosion proof electrical heaters for industrial … · jevi a/s iso 9001 a12295 explosion proof...

JEVI A/SISO 9001A12295

EXPLOSION PROOF ELECTRICALHEATERS FOR INDUSTRIAL AND OFFSHORE APPLICATIONS

ATEX

CLIENTS REFERENCE LIST 21

CONTROL EQUIPMENT

SPACE HEATING

IMMERSION HEATERS EEx de II

BASIC COMPONENTSElement EEx e II 7

Type D-8640 8

Type D-8660 9Type D-8680 10Type D-8800 11

CAST HEATERS

Electric fan heaters 14Finned tube air heater ERB 15

Sectional radiator SR 19

Control cabinets 20Thermostats EJB 21

INTRODUCTIONGeneral information 3

Natural gas heater 17Electrical duct heater 18

Type D-8640 13

ENQUIRY SHEET 22

The JEVI group’s basic idea is based on a con-cept including product development, technolo-gical adaptation, com-plete solutions as well as product de sign and solid craftmanship remains the company’s hallmark.

For more than 60 years we have supplied the industry with heating technology and have thus gained an extensive know-how which is con-stantly being used for the benefi t of our customers.

We are specialists in complete solutions and special tasks and our engineers and technical sup port team are always at your service - from fi rst draft to fi nished unit.

We have production facili-ties in both Denmark and the Net her lands.

Our product range include both standard and special products within explosion proof heaters, heating of items, heating of liquid, heating of air, room heat-ing, frost protection andregulation.

JEVI A/S and SINUS-JEVI Electric Heating BV are certifi ed according to EN ISO 9001:2000 and all items and constructions to be used in explosion proof areas are approved according to ATEX.

3

SINUS-JEVI Electric Heating BV • Nijverheidsweg 2 • NL-1671 GC Medemblik • www.sinusjevi.com

In chemical, petrochemical, pro-cess, offshore industry and military installations various media are produced, processed and stored in areas where there is a potentially explosive atmosphere, which ne-cessitate explosion proof electrical heaters.

Our explosion proof heaters comply with ATEX which is an EU directive concerning electrical and mechanical equipment for applica-tion in hazardous areas.

We manufacture electric heating solutions for solids, liquids and gases complete with control and instrument panels or cabinets, such as:

- immersion heaters (liquids, gases)- immersion heater batteries (liquids, gases)- circulation heaters (liquids, gases)- gas heaters (industrial gases, such as hydrogen natural gas, carbon dioxide, nitrogen, etc.)- air heaters- ovens- miscellaneous industrial heating applications- control and instrument panels, cabinets, thermostats, electronic temperature control, thyristor and microprocessor control.

GENERALTechnological developments and safety regulations makes it almost possible to avoid the danger of explosions.

The term explosive atmosphere is defi ned as a mixture of infl am-mable solids - in the form of gases, vapour, fog or dust - with air under atmospheric conditions causing the combustion to spread to the entire unburned mixture after ignition.Atmospheric conditions are nor-mally defi ned as -20ºC to +40ºC, pressure 0.8 to 1.1 bar.

Electrical units for hazardous areas are spit up in two groups:

GROUP IGroup I consists of electrical de-vices applied in explosive atmos-pheres in areas such as gasworks and mining. Devices categorised as group I are applicable when the danger of explosion is caused by methane, coal dust or a mixture of these. In case that coal dust forms a layer on the device a maximum surface temperature of 150ºC is admissible. When the deposit of a coal dust layer is not possible a maximum surface temperature of 450ºC is allowed.

GROUP IIElectrical devices in hazardous environments (excluding group I) above ground level. For this group the admissible surface temperatures only count for executions of devices which meet the requirements of the tempera-ture classes.

ZONE CLASSIFICATIONHazardous areas include places, environments, premises and operational circumstances where explosive atmospheres can be present. To indicate the probability of explosion in the above mentioned hazardous areas, these are divided into zones; 3 zones for gases and 3 zones for dust depending on how often the danger of explosion is present.

ZONE 0 are areas where danger of explosion is always or very often present due to infl ammable solids in the form of gases, fog or vapour.

ZONE 1 are areas where danger of explosion is occasionally present under normal operating conditions due to infl ammable solids in the form of gases, fog or vapour.

ZONE 2 are areas where danger of explosion is rarely or only shortly present due to infl ammable solids in the form of gases, fog or vapour.

ZONE 20 are areas where danger of explosion is always or very often present due to infl ammable solids in the form of dust.

ZONE 21 are areas where danger of explosion is occasionally present under normal operating conditions due to infl ammable solids in the form of dust.

ZONE 22 are areas where danger of explosion is rarely or only shortly present due to infl ammable solids in the form of dust.

Incidental presence of explosive mixtures during a very short time

Danger of ignitionContinuous presence of explosive mixtures

Regular presence of explo-sive mixtures

No danger

No danger

No danger

2/22

1/21

0/20

1/21

2/22

2/22

INTRODUCTION

4

JEVI A/S • Godthåbsvej 7 • DK-7100 Vejle • www.jevi.dk

GAS CLASSIFICATIONGas ignition danger determines whether to use gas classifi cation A, B or C. Classifi cation B also applies to classifi cation A, and classifi cation C applies to both A and B.

TEMPERATURE CLASSESFor an optimal application of explosion proof electrical equipment a distribution in temperature classes has been developed to prevent immediate applications of the most strict safety regulations. The lowest ignition temperature of an explosive gas or vapour mixture in which electrical equipment is installed should exceed the surface temperature of the device. The highest admissible surface temperatures are applied for temperature group T1; the lowest for temperature group T6. An electrical heater which fulfi lls the requirements of temperature class T4 automatically meets the standards of T1, T2 and T3.

TEMPERATURE CLASS T1Gas or vapour mixtures with an ignition temperature >450ºC and a maximum admissible surface temperature of the electrical device of 450ºC. T1 includes e.g.: propane, carbon monoxide, ammonia, acetone, benzene, methane, hydrogen.

TEMPERATURE CLASS T2Gas or vapour mixtures with an ignition temperature >300ºC and a maximum admissible surface temperature of the electrical device of 300ºC. T2 includes e.g.: butane, butyl acetate, ethanol, iso-pentane.

TEMPERATURE CLASS T3Gas or vapour mixtures with an ignition temperature >200ºC and a maximum admissible surface temperature of the electrical device of 200ºC. T3 includes e.g.: petrol, oil derivatives, in principal petrochemical industry.

TEMPERATURE CLASS T4Gas or vapour mixtures with an ignition temperature >135ºC and a maximum admissible surface temperature of the electrical device of 135ºC.

TEMPERATURE CLASS T5Gas or vapour mixtures with an ignition temperature >100ºC and a maximum admissible surface temperature of the electrical device of 100ºC. T5 derives its practical meaning in the processing of carbon disulphide and the production of textile fi bres.

TEMPERATURE CLASS T6Gas or vapour mixtures with an ignition temperature >85ºC and a maximum admissible surface

temperature of the electrical device of 85ºC.

T6 is based only on the processing of ethylnitrite. The environmental temperature in the calculations is 40ºC. An environmental temperature which deviates from the above mentioned 40ºC is admissible. In this case the chosen temperature must be mentioned explixitly on the device.

Upperexplosionlimit

Safe area

Lowerexplosionlimit

Ignition area

No explosionconcentrate volume too high

No explosionconcentrate volume too small

Explosion of igni-tion sourceis present

TemperatureClass

T1T2T3T4T5T6

Max. SurfaceTemperature

450ºC300ºC200ºC135ºC100ºC 85ºC

INTRODUCTION

5


FLAMEPROOF ENCLOSURE -d-Cenelec EN 50.018

Electrical parts which in a hazardous atmosphere can ignite an explosion should be enclosed in a junction box. The junction box has to be constructed in such a manner that it can resist the pressure built up of an explosion (dampening effect) and prevent transmission of the explosion to the environment.It is assumed that penetration of explosive gas or vapour in the closure cannot be prevented, but the explosion will then be limited to the inner part of the enclosure, i.e. limited to the ignition source itself (sparks, arcing).

INCREASED SAFETY -e-Cenelec EN 50.019

For this method of protection special measures have been taken in the construction to create the possibilities of increased safety in order to prevent high surface temperatures as well as preventing sparks and arcing in the inner and outer parts of the electrical device.

The essential difference between the enclosure -d- and -e- is that in enclosure -e- an explosion is completely excluded. The maximum surface temperature is the determining parameter.

Junction boxes, control cabinets with electrical parts under voltage have to be executed with IP54 protection. In constructions which only enclose insulated electrical parts IP44 executions are suffi cient.

Flameproof enclosures can be classifi ed as A, B or C - the safety requirements for B are more strict than A, and the same applies to C in comparison with B.

The fl ameproof junction box undergoes an overpressure test which differs in relation to type A, B or C. The aim of the test is to fi nd out if the junction box can resist the test pressure as the gas mixture cannot escape from the enclosure. Based on this, the offi cial institute determines if the fl ameproof enclosure complete with heating elements will be admitted and certifi ed.

EEX de II C T3Defi nes max. surface tem pe ra tu re on parts placed in the ex area. T3 = 200ºCDefi nes which gases/medium the classifi cation includes. A, B or C. C includes both A and B.

Defi nes the gas group I or II.I: Ex areas in mines and related areasII: All ex equipment used above ground levelDefi nes the construction of the enclosure.-e- Terminal box where the electrical connections, terminals and thermostats are constructed with regards to increased safety.-d- Flameproof enclosure which can resist a pressure built up of an explosion.-ed- As -e- but it is possible to use components classifi ed as -d- inside the terminal box (thermostats).-de- As -d- but it is possible to use components classifi ed as -e- inside the terminal box (terminals and thermostats).

Ex equipment.

European Standard, approved equipment.

INTRODUCTION

6


For hazardous areas we have developed explosion proof EEx de heating equipment, designed and manufactured in accordance with EN 50.014, EN 50.018 and EN 50.019 certifi ed by the independent testing institute ISSeP. The certifi cates cover zone 1 and zone 2 for hazardous areas as well as gas groups II A, II B and II C and temperature classes T6-T1.

The fl ameproof -d- enclosures have been designed for non-safe areas to protect the environment against gas explosions caused by sparking of electrical connections of the heating elements and control devices.Several types of enclosures for immersion heaters, fl anged or screwed, have been described on pages 8-10.Each type covers a range of maximum number of installed

hairpin shaped heating elements and therefore a range of installed power.By consulting the selection tables on pages 8-10 it is easy to select the heating equipment for your specifi c application.

The terminal enclosures have a certifi ed degree of protection up to IP66. As standard the enclosure is coated with one layer of primer and one topcoat. Other coating systems on request.

The maximum temperature for the terminal enclosure during operation is 80ºC (based

Max. Temperatureof Flange

TemperatureClass

Distanceto Heater

85ºC100ºC135ºC200ºC300ºC450ºC

T6T5T4T3T2T1

50 mm75 mm

100 mm150 mm200 mm250 mm

on maximum 40ºC ambient temperature).The required minimum distance between enclosure and connection fl ange to ensure the temperature limit of 80ºC in the enclosure is listed in the below table as a function of temperature classes.The enclosures have been provided with cable entry sockets for certifi ed standard cable entries.The quantity, size and type of cable should be stated when ordering.

Please send your data requirements and we will quote a custom-build piece of heating equipment.

INTRODUCTION

7


EEx e II HEATING ELEMENT

A basic component within explosion proof heating equipment is the tubular heating element. The heating element consists of a nickelchrome resistance wire, centred in a metal sheath and insulated with compact magnesium oxyde. The elements are usually bent into a hairpin shape.

Standard diameters of the element: 8.5 mm, 10.2 mm, 12.7 mm and 16 mm.

Sheath material:AISI 304/316/321/310Incoloy 800/825, Inconel 600Titanium, copper

We have designed an increased safety heating element with code EEx e II according to Cenelec standard EN 50.014 and EN 50.019.This heating element forms the basic of increased safety heating equipment. Increased safety is a method of protection by which additional precautions have been taken with regards to construction (to create the possibilities of increased safety) in order to prevent high surface temperatures as well as sparks and arcing in the inner and outer parts of the electrical parts. These EEx e II elements can be built into a junction box with minimum degree of protection IP54 provided with EEx e terminals to an increased safe immersion heater.

For maximum temperature protection and controlling certifi ed fl ameproof thermostats and thermocouples or intrinsically safe performed thermocouples a junction box can be installed. All switching devices in the junction box must be fl ameproof performed. The distance between the junction box and fl ange in relation to the temperature class T6 to T1 is shown in the table on page 6.

The increased safe heater batteries can be applied in hazardous areas, zone 1 and zone 2 and installed in air duct systems and in special applications in which the fl ameproof batteries are beyond their scope. Delivery of the increased safe heating equipment includes all necessary certifi cates of the components.

BASIC COMPONENT

8


IMMERSION HEATERType D-8640

Applicable for heating of fl uids, both liquids and gases. The heater consists of a certifi ed fl ameproof enclosure containing:- certifi ed electric heating elements- one temperature protective thermostat with manual reset or one thermocouple PT100 as a safety device. Thermocouple and PT100 are only applicable in combination with a temperature controller installed in a control panel- one control thermostat for the fl uid temperature. Alternatively, one thermocouple or PT100- threaded holes for cable entries and/or plugs of a certifi ed fl ameproof model EEx d II C

The fl ameproof enclosure is constructed as a seamless body, a front and bottom cover. The front cover has been locked by a M4 screw.Standard material of enclosure: carbon-steel/high alloy steel. Other materials on request.

Standards features:- 4", 150 LBS, ANSI B16.5 carbon steel and high alloy steel fl ange- enclosure protection IP66- element support spacers above 750 mm immersion length- distance between enclosure and fl ange: see table on page 6

- diameter of element: 8.5, 10.2, 12.7 and 16 mm- material of heating elements: high alloy steel, nickel alloy and copper alloy- cable entries: type 501/453 Universal. Material: brass- special types on request

The table refers to a heater application in which:- max. power installed in 30 kW divided into two groups at a supply voltage of 400 V, 3 phase

and the use of one thermocouple or one PT100 as safety device- max. immersion length: 3000 mm- max. number of cable entries: 2

The maximum allowable power input in each battery has been based on a maximum watt density determined by the temperature class and type of fl uid and further depending on supply voltage and customers cable sizes.Please ask our advice on these matters.

Type D-8640 EEx de II C T6-T1, junction box IP66

MaximumCapacityin Gases

(Watt)

MaximumCapacityin Water

(Watt)

MaximumCapacity

in Oil(Watt)

ImmersionLength

(mm)

ElementsNo. of max.

Ø8.5 Ø10.2 Ø12.7 Ø16

Flangedim

150 LBSType

D-8640 D021-05D-8640 D021-07D-8640 D021-10D-8640 D021-15D-8640 D021-20D-8640 D021-25D-8640 D021-30

D-8640 F031-05D-8640 F031-07D-8640 F031-10D-8640 F031-15D-8640 F031-20D-8640 F031-25D-8640 F031-30

D-8640 H061-05D-8640 H061-07D-8640 H061-10D-8640 H061-15D-8640 H061-20D-8640 H061-25D-8640 H061-30

2“2“2“2“2“2“2“

3“3“3“3“3“3“3“

4“4“4“4“4“4“4“

2222222

3333333

6666666

-------

-------

3333333

-------

-------

3333333

500750

10001500200025003000

500750

10001500200025003000

500750

10001500200025003000

1000170023003600490062007500

150025003500550070009000

11500

300050007000

11000140001800023000

300050007000

11000120001200012000

45007000

1000015000200002500030000

9000140002000030000

*30000*30000*30000

800100020003000400050006000

1200200030004500600075009000

2400400060009000

120001500018000

* Limited power at cable entry

2222222

3333333

6666666


9



Applicable for heating of fl uids, both liquids and gases. The heater consists of a certifi ed fl ameproof enclosure containing:- certifi ed electric heating elements- one temperature protective thermostat with manual reset or one thermocouple PT100 as a safety device. Thermocouple and PT100 are only applicable in combination with a temperature controller installed in a control panel- one control thermostat for fl uid temperature. Alternatively, one thermocouple or PT100- threaded holes for cable entries and/or plugs of a certifi ed fl ameproof model EEx d II C


Standards features:- 6", 150 LBS, ANSI B16.5 carbon steel and high alloy steel fl ange- degree of protection of the enclosure IP66- element support spacers above 750 mm immersion length- distance between enclosure and fl ange: see on page 6

- element diameter: 8.5, 10.2, 12.7 and 16 mm- material of heating elements: high alloy steel, nickel alloy and copper alloy- cable entries: type 501/453 Universal. Material: brass- special types on request

The table refers to a heater application in which:- max. power installed in 60 kW divided into two groups at a supply voltage of 400 V, 3 phase

and the use of one thermocouple or one PT100 as safety device.- max. immersion length: 3000 mm- max. number of cable entries: 3

The maximum allowable power input in each battery has been based on a maximum watt density determined by the temperature class and type of fl uid and further depending on supply voltage and customers' cable sizes.Please ask our advice on these matters.



(Watt)


(Watt)

MaximumCapacity

in Oil(Watt)

ImmersionLength

(mm)

ElementsNo. of max.

Ø8.5 Ø10.2 Ø12.7 Ø16

Flangedim

150 LBSType

D-8660 F031-05D-8660 F031-07D-8660 F031-10D-8660 F031-15D-8660 F031-20D-8660 F031-25D-8660 F031-30

D-8660 H061-05D-8660 H061-07D-8660 H061-10D-8660 H061-15D-8660 H061-20D-8660 H061-25D-8660 H061-30

D-8660 J121-05D-8660 J121-07D-8660 J121-10D-8660 J121-15D-8660 J121-20D-8660 J121-25D-8660 J121-30

3“3“3“3“3“3“3“

4“4“4“4“4“4“4“

6“6“6“6“6“6“6“

3333333

6666666

12121212121212

-------

3333333

6666666

-------

3333333

6666666

500750

10001500200025003000

500750

10001500200025003000

500750

10001500200025003000

150025003500550070009000

11000

300050007000

10500140001800022000

6000100001400021000280003600044000

45007000

1000015000180001800018000

9000140002000025000300003500036000

1800028000400005000060000

*60000*60000

1200200030004500600075009000

2400400060009000

120001500018000

48008000

1200018000240003000036000


3333333

6666666

12121212121212


10



Applicable for heating of fl uids, both liquids and gases. The heater consists of a certifi ed fl ameproof enclosure containing:- certifi ed electric heating elements- one temperature protective thermostat with manual reset or one thermocouple PT100 as a safety device. Thermocouple and PT100 are only applicable in combination with a temperature controller installed in a control panel- one control thermostat for the fl uid temperature. Alternatively, one thermocouple or PT100- threaded holes for cable entries and/or plugs of a certifi ed fl ameproof model EEx d II C


Standards features:- 8", 150 LBS, ANSI B16.5 carbon steel and high alloy steel fl ange- degree of protection of the enclosure IP66- element support spacers over 750 mm immersion length- distance between enclosure and fl ange: see table on page 6

- element diameter: 8.5, 10.2, 12.7 and 16 mm- material of heating elements: high alloy steel, nickel alloy and copper alloy- cable entries: type 501/453 Universal. Material: brass- special types on request

The table refers to a heater application in which:- max. power installed in 90 kW divided into three groups at a supply voltage of 400 V, 3 phase

and the use of one thermocouple or one PT100 as a safety device- max. immersion length: 3000 mm- max. number of cable entries: 4

The maximum allowable power input in each battery has been based on a maximum watt density determined by the temperature class and type of fl uid and further depending on supply voltage and customers' cable sizes.Please ask our advice on these matters.



(Watt)


(Watt)

MaximumCapacity

in Oil(Watt)

ImmersionLength

(mm)

ElementsNo. of max.

Ø8.5 Ø10.2 Ø12.7 Ø16

Flangedim

150 LBSType

D-8680 J121-05D-8680 J121-07D-8680 J121-10D-8680 J121-15D-8680 J121-20D-8680 J121-25D-8680 J121-30

D-8680 K181-05D-8680 K181-07D-8680 K181-10D-8680 K181-15D-8680 K181-20D-8680 K181-25D-8680 K181-30

D-8680 K241-05D-8680 K241-07D-8680 K241-10D-8680 K241-15D-8680 K241-20D-8680 K241-25D-8680 K241-30

6“6“6“6“6“6“6“

8“8“8“8“8“8“8“

8“8“8“8“8“8“8“

12121212121212

18181818181818

24242424242424

6666666

9999999

12121212121212

6666666

9999999

9999999

500750

10001500200025003000

500750

10001500200025003000

500750

10001500200025003000

6000100001400021000280003600044000

9000150002100031500420005400066000

14000200002800042000560007200088000

18000180004000050000600007000070000

290004400060000700008000090000

*90000

40000600008000090000

*90000*90000*90000

48008000

1200018000240003000036000

8000130001800027000360004500054000

12000180002400036000480006000072000


9999999

15151515151515

21212121212121


11


INCREASED SAFETY -e-Cenelec EN 50.014/EN 50.019 EN 50.018

ADVANTAGES- Up to 2.5 megawatt per single unit- Low maintenance costs- Light construction- Easy access- Economical

It is also possible to combine the the advantages of both -d- and -e- resulting in the most cost effective, tailormade solution for your industrial heating requirements.

TECHNICAL DESCRIPTIONImmersion heater D-8800

Applicable for heating of liquids and gases. The material of the standard certifi ed increased safety enclosure is stainless steel.

Standard features:- up to 36" fl ange acc. ANSI B 16.5 material carbon steel, high alloy steel, nickel alloy, monel etc.- degree of protection of the enclosure: IP66- diameter of heating elements: Ø8.5, Ø10.2, Ø12.7 and Ø16 mm- material of elements: high alloy steel, nickel alloy and copper alloy- immersion length up to 3000 mm: see table on page 12- baffl e plate material: stainless steel- heater battery can be provided with: 1) protective and/or control devices: thermostat, thermocouple or PT100 2) temperature transmitters 3) anti-condensation heater 4) certifi ed cable glands, standard material: brass- maximum supply voltage: 1100 V

The maximum allowable energy dissipation of the tubular heating

elements has been based on a maximum watt density which is physically depending on the fl uid temperature and type of fl uid. The temperature setting of the safety device has to prevent that the maximum temperature exceeds the temperature class.We design, engineer and manufacture complete explosion proof heating units for industrial applications according to customer specifi cations.

APPLICATIONS- heating mineral, heavy and heat transfer oil- fuel gas pre- and afterheating- heating and superheating gases (nitrogen, natural gas, carbon- dioxide, fuel gas, etc.)- regeneration heating- defrosting- feed water heating- evaporating water- glycol separators- heating of other fl uids


12


Type D-8800 EEx ed II C T6-T1

MaximumCapacity

Liquid (kW)

MaximumCapacity

Gases (kW)Immersion

LengthFlange

150 LBSType

NumberIncreased Safety -e-Enclosure Size

400 x 400 mm

500 x 500 mm

600 x 600 mm

800 x 800 mm

1000 x 1000 mm

D-8800 MD-8800 MD-8800 M

D-8800 PD-8800 PD-8800 P

D-8800 SD-8800 SD-8800 S

D-8800 VD-8800 VD-8800 V

D-8800 WD-8800 WD-8800 W

0561-100561-200561-30

1021-101021-201021-30

1601-101601-201601-30

2001-102001-202001-30

3161-103161-203161-30

12“12“12“

16“16“16“

20“20“20“

30“30“30“

36“36“36“

100020003000

100020003000

100020003000

100020003000

100020003000

3090

150

60180300

85250420

200600

1000

30010001500

DESIGNPressure vessels or a combination of vessels form an integral part of heating units in many applications. The shell explosion proof batteries can be mounted with up to 36" outer dimension.Vessels can be designed in accordance with PED or ASME VIII div. 1.Most heaters are supplied complete with a control system to control the working temperatures and safeguarding the maximum temperature. To ensure complete compatibility and optimal design, the complete engineering and manufacturing of both heating unit and control system is preferable.

Please send your exact data requirements to quote custom-built heating equipment.

60150250

150400600

200500700

60010001500

65019002500


13


TYPE D-8640

APPLICATIONProcess heating in the chemical industry or other industries.

CONSTRUCTIONOur cast-in explosion proof heaters consist of high quality tubular heaters, cast into specifi c grades of non-ferrous alloys - all chosen for their excellent thermal conductivity properties.Our cast heaters consist of one temperature protective thermostat with manual reset or one thermocouple or PT100 as safety device.

DESIGN CRITERIASize practically any size and shape feasibleWattage aluminium: up to 5 W/m² bronze: up to 8 W/m²Voltage upon requestMaximum temp. aluminium 375ºC bronze 650ºCMachiningtolerance 0.1 mm standardCertifi ed EEx de II C T6-T1, IP66

CAST HEATERS

14


EXPLOSION PROOF ELECTRIC FAN HEATERS

The liquid-fi lled heaters are ATEX approved to directive 94/9/EC and are therefore suitable for EX II 2G, EEx d IIB T3 hazardous location classifi cations. With an IP55 electrical enclosure rating the heaters are designed to provide space heating in areas where fl ammable mixtures of air and gases, vapour or mists are present.

APPLICATIONExplosion proof fan heaters provide primary or supplementary heating for comfort or frost protection. Typical applications involve oil refi neries, sewage treatment plants, petrochemical plants, oil rigs, unattended pumping stations, chemical storage and handling facilities, paint storage areas and countless other hazardous areas covered by these classifi cations.

CONSTRUCTIONExplosion proof fan heaters utilise a unique core that has been vacumised. The induced vacuum allows for an evenly spread heat discharge on the entire surface of the heat exchanger while maintaining a surface temperature that can never exceed the limits of its T class.

The heater core assembly is contained in a sturdy, epoxy-coated, 2 mm thick steel cabinet, which also carries the motor and fan assembly. Adjustable louvers allow directional control of the airfl ow. A narrow gap, two-piece fan guard is provided to shield all moving parts. All fasteners are zinc plated for corrosion protection.

MOUNTING KITSFor mounting the explosion proof fan heaters a number of mounting kits are available. Ask our technical support team for detailed information.

Voltage

D230150028D400350069D400350093D400350139D400350231

230 V400 V400 V400 V400 V

13333

2.8 kW6.9 kW9.3 kW

13.9 kW23.1 kW

12.0 A10.0 A13.4 A20.1 A33.3 A

12ºC17ºC23ºC16ºC14ºC

Model Rating Phase Current Temperature Rise

SPACE HEATING

15


FINNED TUBE AIRHEATERSType D-8500

Application areas are space heating and control cabinet heating, such as battery, paint or chemical material storage rooms and gas stations.Applied on platforms, chemical and petrochemical plants for space heating. Applied in control cabinets to prevent condensation in switchboards, control and instrument panels.

The following values serve for guidance:- installed inside a building 30-60 W/m³- installed outside a building 60-100 W/m³- installed under extreme weather conditions 100-150 W/m³

CONSTRUCTIONA steel tube is welded to the junction box. The steel tube is provided with rolled fi ns of steel which guarantees the highest effi ciency in heat transfer.A ceramic heating element has been mounted in the tube. The effect is that the surface temperature never exceeds the maximum admissible temperature in the groups T4 and T3.

The construction is provided with two supports with holes for wall and fl oor fi xing. Further equipped with an EEx d II C junction box

provided with a standard cable entry M20 x 1.5.Standard position cable entry: 8500.Special position: 8501 and 8502.Standard supply voltage: 230 V.Special supply voltage on request (max. 440 V).

Note:The heater ERB should be installed horizontally and must not be covered during heating. A free area of 90 cm above heater top should be guaranteed. Maximum surrounding temperature: 40ºC.

The fi nned tube airheater ERB can be controlled by a room thermostat type EJB (see page 21).

Type D-8500 EEx de II C T4-T3, junction box IP65T3T4AType

ERB-3ERB-4ERB-5*ERB-6ERB-7*ERB-8ERB-9

ERB-10*ERB-11ERB-12ERB-13*ERB-14ERB-15ERB-16

450 mm550 mm650 mm750 mm850 mm950 mm

1050 mm

1150 mm1250 mm1350 mm1450 mm1550 mm1650 mm1750 mm

140 W180 W230 W280 W320 W370 W420 W

460 W510 W560 W600 W650 W700 W740 W

250 W325 W400 W450 W500 W600 W700 W

750 W800 W900 W

1000 W1100 W1200 W1280 W

T3T4AType

ERB-17ERB-18ERB-19*ERB-20ERB-21ERB-22ERB-23

ERB-24ERB-25*ERB-26ERB-27ERB-28ERB-29ERB-30

1850 mm1950 mm2050 mm2150 mm2250 mm2350 mm2450 mm

2550 mm2650 mm2750 mm2850 mm2950 mm3050 mm3150 mm

790 W840 W880 W930 W980 W

1020 W1070 W

1120 W1160 W1210 W1260 W1300 W1350 W1400 W

1360 W1440 W1520 W1600 W1680 W1760 W1840 W

1920 W2000 W2080 W2160 W2240 W2320 W2400 W

* T3 executions on stock

SPACE HEATING

16


FINNED TUBE AIRHEATERType D-8505

We have developed a variation of our standard explosion proof fi nned tube air heater ERB to be installed in corrosive environments, such as platforms, chemical, petrochemical and offshore plants. This heater is made of stainless steel 316.

The heater is certifi ed according to the Cenelec norms with the code EEx d IICT4 or T3. Certifi cate ISSeP 03ATEX106 X.Max. voltage 440 V, standard 230 VMax. Amp. 12 AMax.surroundingtemperature 40ºCCable entry nickel plated brass M20 x 1.5, stainless steel on requestConstruction drawing D-8505 standard. Special position cable entry D-8506 and D-8507

The maximum power allowed for the temperature classes T3 and T4 are indicated in the tables.

Note:The ERB heater should be installed horizontally and must not be covered during heating. A free area of 90 cm above heater top should be guaranteed. Maximum environment temperature: 40ºC.

Stainless steel 316

Type D-8505 EEx de II C T3 Stainless steel 316

ItemNumber

Max. Power

AllowedTotal

LengthType

ERB-4ERB-5*ERB-6ERB-7*ERB-8ERB-9ERB-10*

ERB-11ERB-12ERB-13*ERB-14ERB-15ERB-16ERB-17

550 mm650 mm750 mm850 mm950 mm

1050 mm1150 mm

1250 mm1350 mm1450 mm1550 mm1650 mm1750 mm1850 mm

225 W300 W375 W450 W525 W600 W675 W

750 W840 W930 W

1030 W1140 W1250 W1350 W

A240410225A240510300A240610375A240710540A240810525A240910600A241010675

A241110750A241210840A241310930A241411030A241511140A241611250A241711350

ERB-18ERB-19*ERB-20ERB-21ERB-22ERB-23ERB-24

ERB-25*ERB-26ERB-27ERB-28ERB-29ERB-30

1950 mm2050 mm2150 mm2250 mm2350 mm2450 mm2550 mm

2650 mm2750 mm2850 mm2950 mm3050 mm3150 mm

1440 W1520 W1600 W1680 W1760 W1840 W1920 W

2000 W2080 W2160 W2240 W2320 W2400 W

A241811440A241911520A242011600A242111680A242211760A242311840A242411920

A242512000A242612080A242712160A242812240A242912320A243012400

ItemNumber

Max. Power

AllowedTotal

LengthType

Type D-8505 EEx de II C T4 Stainless steel 316

ItemNumber

Max. Power

AllowedTotal

LengthType

ERB-4ERB-5ERB-6ERB-7ERB-8ERB-9ERB-10


550 mm650 mm750 mm850 mm950 mm

1050 mm1150 mm

1250 mm1350 mm1450 mm1550 mm1650 mm1750 mm1850 mm

110 W150 W190 W230 W270 W310 W350 W

390 W430 W470 W510 W540 W580 W620 W

A245401110A245510150A245610190A245710230A245810270A245910310A246010350

A246110390A246210430A246310470A246410510A246510540A246610580A246710620


ERB-25ERB-26ERB-27ERB-28ERB-29ERB-30

1950 mm2050 mm2150 mm2250 mm2350 mm2450 mm2550 mm

2650 mm2750 mm2850 mm2950 mm3050 mm3150 mm

660 W700 W750 W790 W830 W870 W910 W

950 W990 W

1030 W1070 W1110 W1150 W

A246810660A246910700A247010750A247110790A247210830A247310870A247410910

A247510950A247610990A247711030A247811070A247911110A248011150

ItemNumber

Max. Power

AllowedTotal

LengthType

* T3 executions on stock

SPACE HEATING

17


NATURAL GAS HEATERCenelec EN 50.028

This gas heater type EEx e has an additional protection in which the parts are enclosed in a resin in such a way that an explosive atmosphere cannot be ignited by either sparking or heating which may occur within the encapsulation.

APPLICATIONPreheating of natural gas or other gases for pneumatic control to prevent freezing of pressure controllers by the “JouleThomson Effect”.

DESIGNThe natural gas heater type D-7800 consists of:- a stainless steel tube for circulation of the natural gas- an EEx e heating element connected to an electrical cord which has an earth conductor

The assembly is completely moulded in compound, casted in a stainless steel enclosure as mould for the encapsulation.

Code: EEx e II T5 or T3

SPACE HEATING

18


ELECTRICAL DUCT HEATERS

APPLICATIONExplosion proof electrical duct heaters are designed for mount-ing in hazardous areas with a temperature class of T3-T6 and zone classifi cation 1 or 2.

The electrical duct heaters are applicable in many areas, such as air handling units, offshore, chemical and petrochemical installations, ship construction and process industry. All heaters are designed for both indoor and outdoor use.

TEMPERATURE CONTROLThe heaters must be regulated by a control device. If placed in haz-ardous areas the control device must also be marked as explosion proof.

MATERIALSDepending on medium and sur-rounding environment the duct heaters will be supplied in ma-terials designed for the actual conditions. Stainless steel is used as standard for both casing and tubulars.

GENERAL TECHNICAL DATATubulars Ø8.5 mm stainless steel AISI 316LSurface load on tubulars max. 1 W/cm²Velocity of medium by 1 W/cm² min. 2 meter/sec., max. 10 meter/sec.Enclosure classifi cation IP66Voltage up to 690 VWattage up to 500 kW each heaterPerformance square, circular or as plugin heaterTemperature limiter all heaters supplied with a safety thermostat and auto thermal cutoutCasing stainless steel AISI 316L or galvanised plate

APPROVALThe duct heaters are approved ac-cording to:

EN 50014 incl. amd. 1-5EN 50018 incl. amd. 1-3EN 50019 incl. amd. 1-5

Certifi cate no. 96D 119719x.Tested and approved by DEMKO.

SPACE HEATING

19


SECTIONAL RADIATOR SRType D-8600

APPLICATIONSpace heating of e.g. battery, paint or chemical material stor-age rooms. Applied on platforms, chemical and petro-chemical plants and gas stations.

CONSTRUCTIONThe heater consists of a steel sectional radiator in which a heater battery, type D-8640 has been mounted in the lower part. For maximum temperature protection the heater battery is equipped with a safety limitation device with manual reset.The radiator is fi lled with water and an antifreeze agent. To avoid over-pressure in the radiator a safety valve, adjusted at 0.3 barg, has been installed.

The heater is provided with fl oor brackets and wall brackets. It is recommended to use a third fl oor bracket for type SR2500 and SR3000.

Standard coating of steel parts: shop primer and fi nish RAL 7032. Special paint fi nishes can also be supplied.

The sectional radiator can be con-trolled by a room thermostat, type EJB (see page 21).

SR/1500 WSR/2000 WSR/2500 WSR/3000 W

3.57 m²4.83 m²6.10 m²7.14 m²

850 mm1150 mm1450 mm1700 mm

± 62 kg± 80 kg± 98 kg

± 113 kg

Type/Power Column Length Heated Surface Total Weight

COLUMN LENGHT

TOTAL LENGTH = COLUMN LENGHT + 250 MM

SPACE HEATING

20


CONTROL CABINETSMost heating units are supplied by us together with a total control system. To ensure complete compatibility and optimal design the complete engineering and manufacturing of both heating unit and control system is preferable. The effi ciency of each heating system depends on the ability to control it accurately. Therefore, we have developed large expertise in offering the best solution for controlling each heating system application.A full range of control systems is available for hazardous areas utilising EEx d, EEx de and EEx p types of protection. The types of control for electric heating systems in hazardous areas include:

ON-OFF CONTROLFor applications where accurate control is not essential the on-off control is suitable. On-off control switches the entire heater load either on or off. The control devices can be thermostats or for slightly improved accuracy electronic controllers with a resistance thermometer PT100 or thermocouple as sensor. For loads above the switching capacity of thermostats or controller the load is switched via a contractor.

STEP CONTROLFor more accurate control than on-off and for controlling high load heating systems step controlling is advisable. The heater load is divided into a number of steps. Each step is switched by a separate contactor.

Depending on the temperature difference between set-point and process temperature the step controller selects the number of steps to be switched on.

THYRISTOR CONTROLFor high accuracy of control thyristor units are used.

PHASE ANGLE CONTROL (p)Each thyristor is triggered once in every half cycle of the AC supply conducting ceasing at the end of the half circle as the current falls to zero. In this way the supply wave form is chopped resulting in a reduction on the RMS output of the thyristor stack. Phase-Angle fi red thyristors give smooth, stepless control of the applied voltage, they are very suitable for heating elements with a large resistance difference between cold and operating temperature.

TIME BASED ZEROVOLTAGE SWITCHING (z)The thyristors are triggered at the beginning of a mains cycle and remain conductive for one or more complete cycles before being switched off for one or more cycles. This operation is continuously repeated thus limiting the average power input to the elements. Slow cycle thyristors generally have cycle times of several seconds and are not suitable for direct control of heaters with a great difference of the resistance between cold and operating temperature.

CYCLE BASE ZEROVOLTAGE SWITCHING (c)The optimum type of burst-fi red thyristors is the single-cycle burst-fi ring type where the average power input is always reached over the minimum possible number of complete cycles (i.e. 50% power = cycle »on« + 1 cycle »of«). Resistive loads controlled by fast-cycle thyristors have a unity power factor and as only full mains cycles are delivered to the load

there is no cumulative distortion of the mains supply. With heavy loads however, voltage drop may cause fl ickering lights and also affect sentive equipment.

COMBINATION OF THYRISTOR UNITSFor very large loads or when the heater represents a signifi cant proportion of the power generation capacity, the heater load is divided into a number of small units each controlled by its own thyristor. A synchronising card control ensures that each thyristor is turned on and off consecutively during the set time period. There are no peak loads generated by a simultaneous controller action and load valeys are evened out.

Please contact our technical department for detailed information.

CONTROL EQUIPMENT

21


THERMOSTAT EJBEEx d II B T6, D-8525

Flameproof aluminium IP65.Dimensions: length 225 mm,width: 100 mm, height: 103 mm

Standard includes:- 1 cable entry for 1 phase- 2 cable entries for 3-phase

The applied thermostats are:EJB 12-00-40-10I phase 16 A, 400 V

EJB 12-00-40-303 phase 16 A, 400 V

Standard temp. range 0-40ºCSwitching difference 1.5ºC

The bulb is fi xed with terminals at the side of the aluminium box.

Thermostats with different temperature ranges are also available.Thermostats suitable for zone 1 and zone 2, gas groups IIC on request.

Cable entry: standard M20 x 1.5 mm, type 501/453.

CLIENTS REFERENCE LIST

AMECBritish PetroleumDSMFujifi lm Nederland BVPhilipsBernaardShellNederlandse Aardolie Maatschappij (NAM BV)Kvearner-AkerTotalFinaElfEhrbecker SchiefelbuschGaz de FranceStorkABB LummusJacobs EngineeringAkzo NobelMalaysia Shipyard and Engineering (MSE) KCC EngineeringNesté BorealisTechnical University TwenteJanssens PharmaceuticalsMaersk Oil and GasRoyal Dutch NavySMOE Pte LtdSolarImtechPetrogasCorusHeerema Marine ContractorsDuPontDow ChemicalTechnical University DelftTechnische UniePetrom Services Romania

CONTROL EQUIPMENT

22


ENQUIRY SHEET Copy this page and send for a quotation

EXPLOSION PROOF HEATER

kW:

Voltage: Hz:

Phase: Wires:

Wire sizes:

CONTROLS

kW:

Voltage: Hz:

Phase: Wires:

Wire sizes:

CONDITIONS

Working temperature:

Working pressure: barg

Maximum immersion length: mm

Medium to be heated:

ºC

HEATER CONTROL

Thermostat

PT100

Thermal cutout

Thermocouple

Special control feature:

Physical properties of fl uid at temperature in/out/mean:

Density:

Specifi c heat: kJ/kgK

Dynamic viscosity: kg/(m.sec)

kg/m³

CONTROL PANEL

Accuracy of control:

On/off control:

DESIGN CONDITIONS

Design temperature min.

Design pressure: barg

Design code:

ºC

Pressure vessel:

Massfl ow fl uid:

Temperature fl uid in:

ºC max.

ºCºC out:

kg/sec

Step control:

Thyristor control:

Combination of thyristor and step control:

ENVIRONMENTAL CONDITIONS

Ambient temperature min.:

Humidity:

On/offshore:

ºCºC max.

Area classifi cation:

(division of zone, actual gas group and temperature class)

ENVIRONMENTAL CONDITIONS

Ambient temperature min.:

Humidity:

On/offshore:

ºCºC max.

Area classifi cation:

(division of zone, actual gas group and temperature class)

OTHER REQUIREMENTS OTHER REQUIREMENTS

FROM

Company:

Name:

Address:

Telephone:

Position:

Postal code:

Fax:

Date: Signature:

Send this to fax no. +31 (0) 227 549150 or +45 7572 2900, or email to [email protected] or [email protected]

23


JEVI A/SGodthåbsvej 7DK-7100 Vejle, DenmarkTel.: +45 7583 0211Fax: +45 7572 [email protected] • www.jevi.dkReg. nr. 177.860

SINUS-JEVI Electric Heating BVNijverheidsweg 2NL-1671 GC Medemblik, The NetherlandsTel.: +31 227 549100Fax: +31 227 [email protected]. nr. NL8115.90.860.B01

We are specialists in engineering, manufacturing and maintenance of explosion proof electrical heaters for the industry:

- gas heating equipment and systems for hydrogen, nitrogen, LNG, air and other gases- heat exchangers - explosion proof heating equipment and systems for solids, gases and liquids in hazardous areas- industrial heating equipment and systems for miscellaneous applications- infrared heating equipment and systems for miscellaneous industrial processes- space heating equipment and systems for explosion proof Cenelec standards- design and fabrication quality assurance according to ISO 9001

Essential is the capacity in engineering and production: to adapt to custom-build solutions to any client situation in general industry, process and offshore industries.

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