deltavolt - ruhstrat.com · accordance with iec 60038 voltage deltavolt voltage regulation systems...

1

DeltaVolt.de

IND IV IDUAL

SAVINGS

GUARANTEE

Reduce electricity costs with DeltaVolt voltage regulating systems from Ruhstrat.

The cheapest electricity is that which you don‘t use.

DeltaVolt Voltage regulation systems for reducing power consumption

2 Eisenmann Thermal Solutions GmbH & Co. KG · Leinetal / Auf der Mauer 1 · 37120 Bovenden · Phone: +49 551 820 830-0 · Fax +49 551 820 830-50 · E-Mail: [email protected] · www.ruhstrat.com

There is no substitute for quality

DeltaVolt voltage regulat ion systems

About Ruhstrat ............................................................................................................................................................................ 3

Frequently asked questions ..................................................................................................................................................... 4

Project life cycle .......................................................................................................................................................................... 7

Series DeltaVolt PLC ................................................................................................................................................................... 8

Series DeltaVolt Light .............................................................................................................................................................. 12

Cost-benefit analyses and outcome documentation Example: Furniture house ............................................................................................................................................... 14 Example: Orthopaedic rehabilitation clinic .............................................................................................................. 16 Example: Freight carrier .................................................................................................................................................. 18 Example: Food wholesaler ............................................................................................................................................ 20 Example: Meat products factory ................................................................................................................................. 22 Example: Furniture production ..................................................................................................................................... 24

Survey form for technical analysis of a DeltaVolt system ......................................................................................... 27

DeltaVolt.de

3Eisenmann Thermal Solutions GmbH & Co. KG · Leinetal / Auf der Mauer 1 · 37120 Bovenden · Phone: +49 551 820 830-0 · Fax +49 551 820 830-50 · E-Mail: [email protected] · www.ruhstrat.com

We stand for the success and reliability of DeltaVolt systems

to reduce your electricity costs.

Ruhstrat is a leading technology supplier with the main focus on electrical testing, voltage optimizing transformers and

power resistors.

Founded in 1888, the electro-technical company has established itself world-wide as the main supplier of customized

solutions.

Since mid-2015, Ruhstrat operates under the name Eisenmann Thermal Solutions, which is a subsidiary of Eisenmann SE.

Eisenmann is a leading global industrial solutions provider for surface finishing, material flow automation, environmental

engineering and thermal process technology. The company develops and builds custom manufacturing, assembly and lo-

gistics plants that are highly flexible, energy- and resource-efficient. Today, Eisenmann has a workforce of approximately

3,600 worldwide, with subsidiaries in Europe, the Americas and the BRIC countries.

You wish for more information regarding Ruhstrat and our products? Just visit our website:www.ruhstrat.com

You have questions regarding DeltaVolt and/or you require an offer?

Under the link http://tinyurl.com/deltavolt you will find various means to contact us.

It goes even quicker by scanning our QR-code (shown on the left side) using your smartphone or tablet.

Our sales team will be most pleased to consult you regarding all questions to our products.

4

Voltage range inaccordance with IEC 60038

Voltage


Eisenmann Thermal Solutions GmbH & Co. KG · Leinetal / Auf der Mauer 1 · 37120 Bovenden · Phone: +49 551 820 830-0 · Fax +49 551 820 830-50 · E-Mail: [email protected] · www.ruhstrat.com

How is that possible?

The IEC 60038 standard specifies on an international basis

that the actual voltage of single-phase and three-phase

power grids can deviate from the nominal voltage by plus/

minus ten percent. Single-phase consumers must therefore

operate reliably within a range of 207 to 253 volts. Analo-

gously, this applies to three-phase appliances with voltage

tolerances from 360 to 440 volts. In view of this, electrical

devices must be designed so that they achieve their nomi-

nal values at the minimum permissible voltage and that

the thermal load is not exceeded at the maximum permis-

sible voltage. As a consequence, electricity can be saved by

supplying only the amount of voltage actually needed by

electrical consumers.

What does DeltaVolt do?DeltaVolt systems control the supplied mains voltage

and ensure that it remains at a constant level in accord-

ance with IEC 60038 that is also ideal in terms of busi-

ness and technical requirements. Especially in the case

of voltage-dependent consumers, this results in reduced

power consumption. Examples of usage are light fixtures

with conventional or inductive ballasts and AC motors in

partial load operation.

What is the advantage of DeltaVolt for you?Rising energy costs make optimization of power consump-

tion one of the most important tasks for enterprises. Delta-Volt systems from Ruhstrat are able to significantly reduce

power consumption for long-term reduction of operating

costs. The performance and reliability of the equipment is

not affected in any way.

According to a McKinsey study* commissioned by the Ger-

man industry lobby group BDI, voltage stabilization sys-

tems can reduce power consumption by up to 15 percent.

These savings potentials can be realized with DeltaVolt. The

systems control the supplied mains voltage and ensure that

it remains at a constant level in accordance with IEC 60038

that is also ideal in terms of business and technical require-

ments. This reduces power consumption and energy costs.

Reduction of power consumption by up to 30 % for lighting systems

Reduction of power consumption by up to 15 % including general consumers

Stabilization of voltage also in case of extreme load variations and voltage fluctuations

Lamps last longer, resulting in lower life cycle costs

Reduced environmental impact due to reduction of Co2 emissions by 636 g / kWh**

* Source: Costs and potentials of avoiding greenhouse gas emissions in Germany (a study by McKinsey & Company, Inc., commissioned by “BDI Initiative – Business for Climate Protection”)** Source: Total emissions model of integrated systems GEMIS 2.1 Hes-sian Ministry for Environment, Energy and Federal Affairs.

What is the technical principle underlying DeltaVolt?The technical principle of these systems is based on

the technology of transformer-type voltage stabilizers.

DeltaVolt systems consist of a variable transformer with

three single-phase AC motors, a serial booster transformer

and an electronic regulator, all mounted in one housing.

A set-point voltage is configured using a PLC controller.

The output voltage is measured and then compared with

the highly stable set-point value. If the output voltage dif-

fers from the set-point value by more than 1 %, boost-

er voltage is adjusted by the motorized regulating trans-

former until the output voltage has reached the set-point

Optimization of voltage achievesthe same performance

with less electricity

Voltage range in accordance with IEC 60038

DeltaVolt.de

5

U [V]

I [A]

Power without DeltaVolt Electrical energy without DeltaVolt

Electrical energy with DeltaVoltPower with DeltaVolt

P Pwith < withoutDeltaVolt DeltaVolt W W< withoutDeltaVolt DeltaVoltwith

t [h]

P=U × I W=P × t

P [kW]


value again. The deviation is added to or subtracted from

the mains voltage accordingly. Temporary voltage fluctua-

tions lasting less than 0.1 second are ignored. The volt-

age is stabilized separately for each mains lead (only with

DeltaVolt PLC). The set-point voltage is set based on the

voltage drop so that the minimum voltage of 207/360 V

required by IEC 60038 reaches the last consumer.

Where can DeltaVolt be used?The possible uses for DeltaVolt systems are almost unlim-

ited. Wherever electrical power is needed, its utilization can

be optimized.

The efficiency of voltage-dependent consumers, such as

those used in the manufacturing industries, wholesale and

retail segments, restaurants and hotels, public administra-

tion, airports and railway stations, indoor swimming pools,

convention centres and logistics firms, can be improved by

regulating the voltage.

Examples of voltage-dependent consumers:

Lamps with spiral-wound filaments

Fluorescent tubes with conventional and

low-loss ballasts

Discharge lamps

AC motors in the partial load range

(constant operation, low torque)

Areas of application:

Ventilation systems

Conveyor systems

Lighting systems in business and industry

Offices and administration facilities

Street and tunnel illumination

Cold storage and refrigeration systems

What are the effects on motorized consumers?The following effects can be observed with motorized con-

sumers. As the voltage increases past the nominal volt-

age, the losses in the stator increase proportionally; this

effect is also present when the motor is under partial load

or in idle state. Power can be saved by using asynchro-

nous motors powered directly from the mains network. In

asynchronous motors the torque/RPM curve flattens out

as the voltage decreases, the pullout torque is reduced

and the RPMs decrease depending on the characteristics

of the driven machine. Although the rotor losses increase

as the voltage decreases, this is more than compensated

by the reduction of the stator losses, so that the tempera-

ture of the machine tends to decrease instead of increase.

Therefore, the service life of the winding or bearings is not

affected.

Where are the particularly high savings potentials?The applications for which voltage reduction is always

worthwhile are lighting systems with conventional ballasts

or inductive ballasts. When the mains voltage is stabilized

in accordance with IEC 60038, the efficiency of fluorescent

tubes with inductive ballasts is improved. When the volt-

age for a T8 58W lamp with inductive ballast (EE1=B1) is

lowered by 8.7 %, the electrical power in the lamp drops

15 %, in the inductive ballast ≈ 36 %, the total electric

power therefore ≈ 18 %, but the luminous power only 13 %.

The efficiency of the lamp is improved by 5 %.

Reduction of power and electrical energy in voltage-dependent consumers

6



How can the efficiency of DeltaVolt be described?Energy-saving measures always involve two aspects that

have to be taken into account. One goal of energy-saving

measures is efficiency; the other is protection of the envi-

ronment. In this respect, energy-saving measures are sub-

ject to analysis of key figures of the capital budgeting, such

as profitability, internal interest rates and the ROI period.

Before preparing a quotation, Ruhstrat conducts a tech-

nical analysis of the prospective customer to analyse

the consumer structure (lighting, motorized consumers,

DC motors, resistive consumers, etc.). The results of this

technical analysis, together with the electric bill provided

by the customer, are used to prepare a quotation that in-

cludes the following:

Recommendations for the energy-saving systems

to be used

Portrayal of the reduction in energy costs to be

achieved; relative in % and absolute in kWh/EURO

Investment costs, broken down by cost of device and

installation, in addition to return on investment (ROI).

What is the return on invest-ment of DeltaVolt?Every DeltaVolt quotation includes the ROI period for the

DeltaVolt system. The return on investment period is be-

tween 2 and 5 years, depending on the specific application.

Together with an experienced financial enterprise, Ruhstrat

offers leasing of the DeltaVolt system. The maximum leas-

ing period is 96 months. With an ROI period of 2 to 5 years

and a financing duration of 8 years, the monthly reduction

in energy costs is higher than the amount of the invest-

ment. Therefore, DeltaVolt strengthens the liquidity of its

users.

Where is the DeltaVolt in-stalled?The installation of a DeltaVolt system is extremely simple:

Integration of the system is fast and easy by simply install-

ing the unit downstream from the power company’s meter,

between the power supply and the consumer. Operations

are not disturbed in any way. The installation is carried out

only by experienced and competent personnel.

What we guarantee!For successful optimisation of the power consumption

with DeltaVolt systems, a detailed analysis of your actual

consumption is necessary. Only if all relevant parameters

are known is it possible to make a reliable prediction about

potential reduction of your power consumption. The de-

tailed analysis of the actual situation is therefore an impor-

tant step in the process of installing DeltaVolt. Experience

leads to conviction.

The individually calculated savings are guaranteed!

Lower electricity costs by optimizing voltage

DeltaVolt.de


Project life cycle

1st step: Presentation of the DeltaVolt concept We explain to you the technical and legal conditions for

voltage regulation within the scope of DIN IEC 60038 and

describe in detail our DeltaVolt concept for reducing power

consumption for electrical devices.

2nd step: Analysis of the electrical devices Since not all electrical devices respond to voltage regula-

tion with the same reduction in consumption, we analyse

their structure thoroughly. We analyse constant power,

energy-constant and voltage-dependent consumers and

their respective power consumption and operating times.

A technician surveys the technical conditions at the in-

stallation site. He needs the assistance of one of your em-

ployees for only a few hours. The technician uses a power

measuring unit to make a reliable prediction of the poten-

tial savings. The power measuring unit records the voltage,

power output and current at a central location in your en-

terprise for a period of 4-7 days.

With state-of-the-art measuring technology and many

years of experience we can precisely determine the power

data for a particular area. This is necessary especially if on-

ly sub-areas of a company’s network need to be supplied

with regulated voltage.

All questions about the installation location and costs are

clarified during the quotation phase.

3rd step: Savings calculation / quotationBased on the technical analysis, the voltage / current and

power output measurements and the power consumption

data and prices provided by you, we calculate the savings

rate and make you an offer with a guaranteed return on in-

vestment for all services up until the start-up date.

4th step: Production / preparation for installationAll DeltaVolt systems are manufactured individually.

After the order is placed, Ruhstrat needs four to twelve

weeks to manufacture the system. During this time we also

make preparations for installing the system.

5th step: Installation / start-up / documentation of savingsDelivery, installation and start-up of the DeltaVolt system

with subsequent network analysis for initial measurement

of savings.

After start-up of the DeltaVolt system we record the pow-

er data with a network analysis device and document the

reduction. First a stable load is generated and then we

change the voltage to show the changed active power with

and without the DeltaVolt. All of this is documented with

a network analysis device.

Graphic presentation of a voltage and power measurement prior to the savings calculation

8



Series DeltaVolt PLC

DeltaVolt PLC3 × 70 A – 3 × 3,500 A

Electronically controlled voltage stabilizer for unbalanced loads

Voltage stabilization per mains lead

Output voltage range: from 230/400 volts to 207/360 volts

For all electrical devices that are designed for operation in accordance with IEC 600 38

Type

No-minal

currentA*

Nominal powerkVA

Cu weight

kg

Total weight

kg

Dimensions of system Dimensions of bypassBypass weight

kg

Wmm

Dmm

Hmm

Wmm

Dmm

Hmm

DeltaVolt 70 A 70 44…48 17 300 800 600 1.900 see annexDeltaVolt 90 A 90 56…62 18 300 800 600 1.900 see annexDeltaVolt 120 A 120 75…83 28 350 800 600 1.900 see annexDeltaVolt 160 A 160 100…111 31 450 1,200 600 1,900 see annexDeltaVolt 250 A 250 156…173 53 550 1,200 600 1,900 800 600 1,900 150DeltaVolt 320 A 320 200…222 60 550 1,200 600 1,900 800 600 1,900 150DeltaVolt 400 A 400 249…277 117 950 1,200 800 1,900 800 800 1,900 200DeltaVolt 600 A 600 374…416 143 1,100 1,200 800 1,900 800 800 1,900 250DeltaVolt 800 A 800 498…554 186 1,400 1,200 800 1,900 800 800 1,900 250DeltaVolt 1000 A 1,000 624…693 210 1,400 1,200 800 1,900 1,200 800 1,900 250DeltaVolt 1250 A 1,250 779…866 276 1,700 2,400 800 1,900 1,200 800 1,900 300DeltaVolt 1600 A 1,600 997…1109 372 2,100 2,400 800 1,900 1,200 800 1,900 300DeltaVolt 2000 A 2,000 1,247…1,386 386 2,500 2,400 900 1,900 1,200 900 1,900 400DeltaVolt 2500 A 2,500 1,559…1,732 640 3,000 2,400 900 1,900 1,600 900 1,900 800

* Other nominal currents on request

DeltaVolt.de


Technical dataAutomatic three-phase voltage stabilizer with auto-con-

nected winding for unbalanced load.

Input:Nominal voltage: 400 / 230 volts

Connection: L11, L21, L31, N, PE or L11, L21, L31, PEN

Lead-in: from below on interior mains

terminals

Nominal frequency: 50 / 60 Hz

Output:Nominal voltage: 360 / 207 volts ... 400 / 230 volts


Lead-in: from below on interior output

terminals

Regulating accuracy: ± 1 % of the nominal voltage

Load: unbalanced

ApplicationThe DeltaVolt PLC series is designed to reduce electricity

costs in three-phase power supply networks with unba-

lanced fluctuating loads. DeltaVolt systems control the

supplied mains voltage and ensure that it remains at a con-

stant level in accordance with IEC 60038 that is also ideal

in terms of business and technical requirements.

Areas of applicationDeltaVolt is suitable especially for general optimization of

power loss not only in all lighting systems, but also in non-

critical facilities operated together with them, such as mo-

torized devices, electric tools, etc.

DesignThe technical principle of these systems is based on the

technology of transformer-type voltage stabilizers. Delta-Volt systems consist of a variable transformer with three

single-phase AC motors, a serial booster transformer

and an electronic regulator, all mounted in one housing.

The function for manual disconnecting of the DeltaVolt system, primarily for maintenance purposes, can be used

as a bypass switch in case of a failure by switching from

OPERATION to BYPASS. Switching and monitoring mecha-

nisms, such as overload protection in the regulating trans-

former, intermediate circuit, temperature monitoring for

transformer windings and internal housing temperature,

trigger an acoustic warning in case of a failure; potential-

free contacts enable transmission of signals to the building

control system. In case of a failure, the output voltage is

raised to the input level to alleviate the load on the trans-

formers. DeltaVolt systems are equipped with powerful

cooling fans.

LoadThe output is intended primarily for three-phase currents

in star-connected electric circuits with three mains leads

and a neutral lead; a continuous unbalanced load of any

type, also single-phase, between mains leads and the neu-

tral lead is permissible up to the level of the nominal cur-

rent for the device. The output voltage between the three

mains leads and the neutral lead is readjusted within the

regulating range. The devices are suitable for the power

supply to resistive, inductive and/or capacitive equipment;

the voltage waveform of the mains grid is not affected.

When used according to specifications, no interference or

additional harmonics occur.

FeaturesThe DeltaVolt PLC series is available with stepless adjust-

ment between the mains voltage and operating voltage.

The operating voltage can be adapted to the power require-

ment by the regulating adjuster to ca. 90 % of the mains

voltage. Fluctuations in the voltages measured between

the leads L12, L22, L32 and the neutral lead are compen-

sated within the possible regulating range with a precisi-

on of ± 1 % of the nominal voltage. This regulating circuit

can achieve the maximum energy savings, since the entire

regulating range is available for stabilization of the opera-

ting voltage. The SIEMENS S7-300 PLC controller combi-

nes a programmable logic controller and an operator panel

in one unit. This allows modular expandable controllers in

a space-saving configuration. The PLC unit consists of the

10



CPU, peripheral equipment and an interface for adding pe-

ripherals. The controller is operated via the operator panel.

Control of the voltage regulationThe SIEMENS S7-300 controller combines a program-

mable logic controller and an operator panel in one unit.

This allows modular expandable controllers in a space-

saving configuration. The PLC unit consists of the CPU, pe-

ripheral equipment and an interface for adding peripherals.

The controller is operated via the operator panel.

The PLC offers the following connections:

24 freely programmable digital inputs

16 freely programmable digital outputs

4 freely programmable analog inputs

2 freely programmable analog outputs

1 freely programmable temperature input

These functions allow metering, frequency measurements,

regulating and text prompting via the display.

Overload and temperature protectionOverload protectors in the intermediate circuit protect

the DeltaVolt from damage. In addition, a temperatu-

re protector protects the serial secondary and regulating

transformers. In case of a failure, the output voltage is

raised to the input level to alleviate the load on the trans-

formers. DeltaVolt systems are equipped with powerful

cooling fans.

Ambient conditionsFor installation in indoor facilities with air conditioning

DeltaVolt systems are environmentally stable in accordance

with DIN 50 010.

Threshold values:

Ambient temperature at nominal power + 40 °C

Minimum value - 20 °C

Relative humidity at 40 °C 85 %

Bypass switchWhen a DeltaVolt system is is connected between electrical

consumers and the mains network, necessary maintenance

on the DeltaVolt system can be carried out only if the po-

wer from the mains network is completely switched off.

This means that the electrical consumers are without po-

wer. In industrial plants, production is not possible during

this time, resulting in lost profit. This situation can be avo-

ided with a bypass switch. The switch bypasses the regu-

lating unit during maintenance, so that the electrical con-

sumers can be connected directly to the mains network

without extensive modification. After completion of the

maintenance, one can switch back to the original position.

All DeltaVolt systems are equipped with a bypass switch for manual load switching as standard equipment. This

provides a safety barrier in the input and enables discon-

nection of the DeltaVolt system for maintenance work.

Mains connectionThe units are prepared for connection to a three-phase

four-wire system with a neutral lead and and earthed lead.

Series

DeltaVolt PLC

DeltaVolt.de

11

Mainsnetwork

Powerlocation

Low voltagemain distribution

board(NSHV)

TransformerMedium voltage /low voltage(e.g. 10 kV / 0,4 kV)

Installationand

electricalconsumers


InstallationThe installation of a DeltaVolt system is extremely simp-

le: Connection in series upstream from the low voltage

main distribution board facilitates fast integration, with

practically no interruption of operations. The installation

is carried out only by experienced and competent person-

nel. After installation of the DeltaVolt, of course, a com-

prehensive e-check of the electrical systems is carried out.

Based on the electricity bill and a network analysis measu-

rement, you have transparency in your energy savings –

from the very beginning.

The system can optionally be installed outside of the buil-

ding in a technical room.

Installation diagram Technical room

Bypass switch

12



DeltaVolt Light3 × 20 A – 3 × 250 A

Electronically controlled voltage stabilizer for balanced loads

Output voltage range: from 230/400 volts to 195/338 volts

For lighting systems with compact fluorescent tubes, mercury vapour, metal vapour, high-pressu-re, sodium vapour high-pressure and low-pressure lamps, halogen, incandescent lamps and fluorescent tubes with conventional or low-loss ballasts

Series DeltaVolt Light

Type Nominal current A*

Nominal power kVA

Cu weight kg

Total weight kg

W mm

D mm

H mm

DeltaVolt L 20 A 20 11.7...13.9 13 165 600 400 1,300

DeltaVolt L 30 A 30 17.6...20.8 15 170 600 400 1,300

DeltaVolt L 40 A 40 23.4...27.7 16.8 175 600 400 1,300

DeltaVolt L 50 A 50 29.3...34.6 17.7 190 800 400 1,300

DeltaVolt L 60 A 60 35.1...41.6 18 200 800 400 1,300

DeltaVolt L 70 A 70 41.0...48.5 19.8 210 800 400 1,300

DeltaVolt L 90 A 90 52.7...62.4 32.1 260 800 600 1,900

DeltaVolt L 120 A 120 70.3...83.1 54 300 800 600 1,900

DeltaVolt L 160 A 160 93.7...111 61.5 350 800 600 1,900

DeltaVolt L 200 A 200 117...138.6 80.4 480 1,200 600 1,900

DeltaVolt L 250 A 250 146.3...173.2 89.4 500 1,200 600 1,900* Other nominal currents on request

DeltaVolt.de


Technical dataAutomatic three-phase voltage stabilizer with auto-con-

nected winding for balanced load.

Input:Nominal voltage: 400 / 230 volts


Lead-in: From below on interior mains

terminals

Nominal frequency: 50 / 60 Hz

Output:Nominal voltage: 338 / 195 volts ... 400 / 230 volts


Lead-in: From below on interior output

terminals

Regulating accuracy: ± 1 % of the nominal voltage

Load: balanced

ApplicationThe DeltaVolt Light series is designed to reduce electricity

costs in three-phase power supply networks with balan-

ced fluctuating voltage between the mains leads and the

neutral lead. DeltaVolt systems control the supplied mains

voltage and ensure that it remains at a constant level that

is ideal in terms of business and technical requirements.

Areas of applicationDeltaVolt Light is ideal for lighting systems with compact

fluorescent tubes, mercury vapour, metal vapour or so-

dium vapour high-pressure and low-pressure lamps, and

halogen lamps with conventional or adjustable electronic

ballasts. Adaptation for general broadband optimization of

the power loss is possible.

DesignThe technical principle of these systems is based on the

technology of transformer-type voltage stabilizers. Del-taVolt systems consist of a variable transformer with one

single-phase AC motor, a serial booster transformer and

an electronic regulator, all mounted in one housing. The

function for manual disconnecting of the DeltaVolt system,

primarily for maintenance purposes, can be used as a by-

pass switch in case of a failure by switching from OPERA-

TION to BYPASS. Switching and monitoring mechanisms,

such as overload protection in the regulating transformer,

intermediate circuit, temperature monitoring for transfor-

mer windings and internal housing temperature, trigger an

acoustic and optical warning in case of a failure; potential-

free contacts enable transmission of signals to the buil-

ding control system. In case of a failure, the output volta-

ge is raised to the input level to alleviate the load on the

transformers.

Mains connectionThe units are prepared for connection to a three-phase

four-wire system with a neutral lead and and earthed lead.

LoadThe output is intended for balanced three-phase currents

in star-connected electric circuits with three mains leads

and a neutral lead; a continuous unbalanced load of any

type, also single-phase, between mains leads and the neu-

tral lead is permissible up to the level of the nominal cur-

rent for the device. The devices are suitable for the power

supply to resistive, inductive and/or capacitive equipment;

the voltage waveform of the mains grid is not affected.

When used according to specifications, no interference or

additional harmonics occur.

FeaturesThe DeltaVolt Light series is available with stepless adju-

stment between the mains voltage and operating voltage.

The operating voltage can be adapted to the power require-

ment by the regulating adjuster to ca. 85 % of the mains

voltage. Fluctuations in the voltages measured between

the lead L22 and the neutral lead are compensated within

the possible regulating range with a precision of ± 1 % of

the nominal voltage. This regulating circuit can achieve the

maximum energy savings, since the entire regulating range

is available for stabilization of the operating voltage. For

reliable activation of the lighting, the output voltage is set

to the level of the input voltage. After the configured time

expires, the system switches to regulated mode.

14



Segment: Furniture house

Federal land: Bavaria

Technical parameters: Annual power consumption: 499,740 kWh

Annual maximum power: 190 kW

Operating hours: 3,500

Voltage: L1: 216, L2: 226, L3: 226 volts

MS transformer: 400 kVA

Changes due to DeltaVolt: Voltage stabilization: 213 volts per mains lead

Effective power:Power savings in kW: 12.77

Power savings in %: 7.60

Effective energy:Energy savings in kW/h: 65,889

Energy savings in %: 13.18

Reduction of electricity costs:Reduction of electricity costs in %: 12.23

Reduction of electricity costs in €: 7,369.53


ROI period: 3.17 years

Reduction of global warming: CO2 reduction: 41,910 kg CO2 p.a.

Example of a cost-benefit analysis and outcome documentation

DeltaVolt system 320 A with bypass

DeltaVolt.de

15DeDe

Ruhstrat GmbH · Heinestraße 12 · 37120 Bovenden Tel. +49 (0) 55 93 803-0 · Fax +49 (0) 55 93 803-50 E-Mail: [email protected] · www.ruhstrat.com

Projekt: Möbelhaus

Spannung mit und ohne DeltaVolt

Spannung ohne DeltaVolt

Spannung mit DeltaVolt





Leistung mit und ohne DeltaVolt

+8,3

4 kW

+13,

17 k

W

+13,

8 kW

+10,

44 k

W

-12,

45 k

W

-11,

98 k

W -11,

29 k

W

-13,

26 k

W

+13,

26 k

W

-13,

98 k

W


Voltage without DeltaVolt Voltage with DeltaVolt

Voltage without DeltaVolt Voltage with DeltaVolt

Voltage without DeltaVolt

Voltage with DeltaVolt

Power with and without DeltaVolt

Voltage with and without DeltaVolt

16



Segment: Orthopaedic rehabilitation clinicFederal land: North Rhine-Westphalia

General parameters:Rooms: 218

Hours of use: 8,760 p.a.

Technical parameters: Annual power consumption: 1.512.324 kWh















DeltaVolt system 800 A with low voltage HRC fuse


Three-phase meter

DeltaVolt.de

17DeDe


Projekt: Orthopädische Rehabilitationsklinik



+32,02 kW

+9,41 kW

+21,54 kW-6,99 kW -11,60 kW
















18



Segment: Freight carrier Federal land: Lower Saxony

Technical parameters: Annual power consumption: 1,215,630 kWh



Voltage: L1: 229, -L2: 229, L3: 229 volts













DeltaVolt system 1,000 A with bypass

DeltaVolt.de

19DeDe



Projekt: Spedition







+19,06 kW

-24,06 kW

+19,23 kW

-24,99 kW


+22,58 kW

-18,44 kW

+19,06 kW

-24,06 kW

Leistung mit und ohne Leistung mit und ohne

+22,58 kW

-18,44 kW










20


Three-phase meter




Segment: Food wholesalerFederal land: North Rhine-Westphalia
















DeltaVolt.de

21

+17,29 kW

+33,24 kW

+11,78 kW

+16,91 kW

-21,44 kW

-13,58 kW

-14,62 kW

-15,82 kW










22



Segment: Meat products factoryFederal land: Lower Saxony





MS transformer: 2 × 630 kVA













DeltaVolt.de

23

-18,10 kW

+38,8 kW

-14,08 kW

+18,62 kW +16,09 kW-20,54 kW










24




Segment: Furniture productionFederal land: North Rhine-Westphalia





MS transformer: 2 x 630 kVA












DeltaVolt.de

25

DeDe


-8,84 kW+8,4 kW -8,84 kW-8,84 kW+8,4 kW+8,4 kW

Projekt: Möbel-Produktion 2









+10,74 kW

-10,53 kW

+10,74 kW+10,74 kW

-10,53 kW-10,53 kW +10,86 kW+12,33 kW

-11,24 kW










26

Reducing energy costs and protecting the climate - with voltage-optimization system DeltaVolt by Ruhstrat

DeltaVolt.de

Energy is precious. Responsible energy consumption is one of the

big challenges of our future.

*On account of the Hessian Ministery for Environment, Energy and Federal affairs 636 g CO2 is emitted for every kWh of electrical energy.

CliMatE prOtECtiOn CErtiFiCatE

Using voltage-optimization system DeltaVolt for reducing energy consumption company

Mustermann GmbHhas saved 262.798 kWh of electrical energy thereby reducing

Co2emission by about 168,14 tons.*

thank you on behalf of ecology and climate protection

Eisenmann thermal Solutions GmbH & Co. KG, Bovenden 10.05.2016

andreas MöbusVice president Business Segment Electrical technology

Reducing energy costs and protecting the climate - with voltage-optimization system DeltaVolt by Ruhstrat

DeltaVolt.de

Energy is precious.

Responsible energy consumption is one of the big challenges of our future.

*On account of the Hessian Ministery for Environment, Energy and Federal affairs 636 g CO2 is emitted for every kWh of electrical energy.

CliMatE prOtECtiOn CErtiFiCatEUsing voltage-optimization system DeltaVolt for reducing energy consumption company

Mustermann GmbHhas saved 262.798 kWh of electrical energy thereby reducing

Co2emission by about 168,14 tons.*thank you on behalf of ecology and climate protection

Eisenmann thermal Solutions GmbH & Co. KG, Bovenden 10.05.2016

andreas MöbusVice president Business Segment Electrical technology



As our customer, you already know before implementation of the project how long your efficiency-increasing investment

will take to pay for itself. We not only give you an accurate calculation of the savings potential – we also guarantee it. This

gives you a solid basis for your decision to increase your

energy efficiency.

After implementation of the project you

will receive a climate protection certificate

containing information on the energy sav-

ings and reduction of CO2 emissions.

Energy is precious.Responsible use of energy is one of the greatest challenges of the future.

Reduce energy costs and

global warming — with DeltaVolt voltage optimization systems from Ruhstrat.

27

DeltaVolt.de


Survey form for technical analysis of a DeltaVolt systemPlease fill in using block letters and send by fax to +49 (0) 55 1 820 830 - 9600. This survey form is also available for

download at www.DeltaVolt.de.

Firm ______________________________________________________________________

Contact ______________________________________________________________________

Street ______________________________________________________________________

Postal code / City ______________________________________________________________________

Phone / Fax ______________________________________________________________________

E-mail ______________________________________________________________________

Segment ______________________________________________________________________

Building ______________________________________________________________________

Operating hours: Days per week } ______ Shifts/hours per day } ________ Weeks per year } ______

Power consumption: } ____________________ KWh/year Annual maximum power: } ___________ KW

High-voltage transformer: } yes } no Transformer: Number } _____ Size } ______ kVA ____________kVA

Consumers: Which electrical consumers do you have in your enterprise?

Motorized actuators: } Ventilation, air conditioning } Condensers } Pumps

} Compressors } Other: ___________________________

Production machines: } Laser cutting machines } CNC machines } Lathes

} Packaging machines } Injection moulding } Welders

} Other: _____________________________________________________________

Power of AC motors up to 100 KW } ______________________________________ kW

Power of AC motors above 100 KW } ______________________________________ kW

Power of AC motors with frequency converter }______________________________ kW

Power of DC motors } __________________________________________________ kW

Power of lighting } _____________________________________________________kW

Amount of above with electronic ballasts } _________________________________ kW

Power of resistive consumers (e.g. electric. heating, charging units, etc.) } _________ kW

Monthly costs for electricity } _________________

DeltaVolt is profitable for us if it reduces electricity costs by } ________ %.Preferred date for technical analysis } ___________ calendar week

Eisenmann Thermal Solutions GmbH & Co. KG · Leinetal / Auf der Mauer 1 · 37120 Bovenden Phone: +49 551 820 830-0 · Fax: +49 551 820 830-50 · E-Mail: [email protected] · www.ruhstrat.com

Eisenmann Thermal Solutions GmbH & Co. KGLeinetal / Auf der Mauer 1, 37120 Bovenden, Deutschland

Phone: +49 5 51 820 830 – 0, Fax: +49 5 51 820 830 – 50, E-Mail: [email protected]

www.ruhstrat.com

2016 © Eisenmann Thermal Solutions GmbH & Co. KG I 05-2016 | 01

All rights reserved. All texts, photos and images are subject to copyright and other laws for the protection of intellectual property.Use of the content requires the prior permission of Eisenmann Thermal Solutions GmbH & Co. KG. All information, descriptions and illustrations are subject to technical modification,

especially with a view toward the further development of our products in accordance with the current state of the art. There will be no special announcement of changes to information, descriptions and illustrations.Errors excepted. Technical characteristics can vary from country to country.

DeltaVolt Partner of Eisenmann Thermal Solutions GmbH & Co. KG:

deltavolt - ruhstrat.com · accordance with iec 60038 voltage deltavolt voltage regulation systems...

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