THREE-PHASEINDUCTION TYPE ELECTRICITY METERST-2CmnMx

• active or reactive energy, 3 or 4 wires networks, direct connection or through VT/CT• base current Ib 0.6 ... 5 A 5 ... 60 A• max. current 400% Ib 600% Ib (maximum 120A)• extended limits for the operating temperature, long operating life • in accordance with MID Directive (2004/EC)

Three-phase one-rate electric meters are meant for measuring active or reactive electric energy consumption on 3 or 4 wire three-phase networks.Their construction and operation comply with the technical requirements provided by IEC 62053-11, EN 50470-2, DIN 43857 and IEC 60145 standards.The meter has been granted EEC model approval certificate by PTB Germany and NMI the Netherland.Three-phase watthour meter is in accordance with MID Directive (2004/EC).

TECHNICAL CHARACTERISTICS

Rated values

Meters for 3 wire networks

T-2CA32M T-2CR32MT-2CA32M T-2CR32MValue

Referencevoltage*, Ur (V)

3x100,3x400

3x100 3x100,3x400

3x100

Basic current,Ib (A)

0.6; 1; 1.5; 3; 5 1. 5 0.6; 1; 1.5; 3; 5 1.5

Maximum current,Imax (%Ib)

120, 200 120 120, 200 120

Referencefrequency, fr (Hz) 50, 60

Basic torgue,-4(10 Nm) min. 9

NOTE: Rated (secondary) current, In: 1, 5 A

Meters for 4 wire networks

T-2CA43M** T-2CR43MT-2CA43M***Value

Referencevoltage*, Ur (V)

3x230/400,3x120/208

3x230/400

Basic current,Ib (A)

Maximum current **,Imax (%Ib)

120

Referencefrequency, fr (Hz)

50; 60

Basic torque-4(10 Nm) min. 8.5

3x230/400

0.3; 0.5;1; 1.5; 5;10; 15;20; 25

30; 40

50; 60

1; 5 0.3; 0.5;1.5; 5;10; 15;20; 25

30; 40

120; 200;300; 400;500; 600

200;300;400

200 120; 200300; 400

200;300

NOTE: Rated (secondary) current, In: 1, 5 A * Other customized values** Maximum current, Imax for Ib=25 A is 100 A Maximum current, Imax for Ib=60 A is 125 A

Accuracy characteristics and influences

Meters for 3 wire networks

Value T-2CA32M T-2CR32M

Class index 2 3

Starting current,(%Ib)

0.5 1

Running with no load,(%Ur)

80-110

Mean temperature coefficient for0 0(-20...55) C (%/ C):

cos j

=

1 (sin j= 1)cos j=

0.5 (sin j= 0.5) lagging

(max. 0.15)

(max. 0.25)

(max. 0.10)(max. 0.15)

Characteristics T-2CA32M T-2CR32M

Power losses:- voltage circuit (W/VA)- current circuit (VA)

Rotor weight (g)

max. 1.8/6max. 1.5

max. 3.5/10max. 1.5

max. 65

Weight (kg) 3÷3.2

Protection degree IP51 or optionally IP53

Meters for 4 wire networks

Characteristics T-2CA43M*** T-2CR43M

Power losses:- voltage circuit (W/VA)- current circuit (VA)

Rotor weight (g)

max. 1.8/6max. 1.5

max. 3.5/10max. 1.5

max. 65

Weight (kg) 3.4÷4.2

Protection degree IP51 or optionally IP53

The meter is manufactured of high quality materials, wich the employment of advanced technologies. A good anti-corrosive protection is ensured to the whole product.

*** May also be with errors on load profile according to class 1

CaseThe base is manufactured of steel plate or bakelite, ensuring the meter fastening on the panel in three points.The cover is manufactured of aluminium, and is fastened in three points on the base by means of sealable screws or of polycarbonate or bakelite fastened in two points on the base. The meter tightness is obtained by means of a rubber gasket, between the base and the cover.

The rotor is manufactured of two discs of high purity aluminium fastened on a stainless steel spindle. The upper part of the disc is marked at the edge with 100 marks for the stroboscopic calibration and a sign to allow disc rotation counting for checking and calibration purposes. The meters can be provided with a reversal-preventing device fitted on the rotor spindle.

BearingsThe upper bearing is of the rotor guiding spindle type. The spindle is manufactured of stainless steel. The lower bearing is of double sapphire type or with magnetic suspension, which insures a long operating life.

The terminal block is manufactured of bakelite. The terminals enable the connection of cables having up to 5 mm diameter for Imax£ 45 A, or having up to 9 mm (8 or 10 mm) for Imax£ 120 A and with the diameter up to 12 mm (11mm) for Imax> 120 A.

The terminal cover is manufactured of steel plate, polycarbonate or bakelite. It shall be mounted on the terminal block by means of two sealable screws. The connecting diagram is provided inside the cover.

The frame is manufactured of AlSi alloy by die casting, ensuring high mechanical resistance and long time dimensional stability.

The driving element is manufactured of the current and voltage electromagnets. The voltage coils are covered with a heat shrinking tube (made of PVC). The current coils are made of copper conductors insulated with synthetic resin on plastic material cases, ensuring good insulation against the core.

The braking element is made up of two permanent magnets manufactured of AlNiCo alloy which ensure long time stability of the magnetic field. The magnet is provided with a device for compensating the errors due to ambient temperature variations. The braking element is provided with pins for the meter fine adjustment at rated load.

The register consists of 6 or 7 drums manufactured of aluminium or of plastic material mounted on a rigid frame. The figures are white on a black field, a good reading being thus ensured.

The adjustment devices are easily accessible from the meter front and do not suffer modifications during handling and transport. The adjustment ranges fall within the limits allowed by IEC 62053-11, EN 50470-2 and IEC 60145.

Typical curves for measurement errors

Single-phase load

Error curves as function of load (current) variation

Balanced load

Error curves as function of voltage variation

cos j

=1

Ur [%]

D[%

]

0

-2

-1

90

1

2

100 110

cos j=0.5 lagging

fr [%]

D[%

]

-1

-2

1

0

2

95 100 105

SYMBOLS:T-2C M - meter typem A - for active energy R - for reactive energyn 32 - for 3 wire networks 43 - for 4 wire networksx - literal index for various constructive options

Error curves as function of frequency variation

Ib (%)

200

(%)

-250

0

-1

1

100

2

500 600120 400300

Ib (%)

200

(%)

-250

0

-1

1

100

2

500 600120 400300

98 102

Constructive options:A - metallic case;B - metal base, polycarbonate cover;C - bakelite base, polycarbonate cover;D - bakelite case

Meters for 4 wire networks

Value T-2CA43M*** T-2CR43M

Class index 2 3

Starting current,(%Ib)

0.5 1

Running with no load,(%Ur)

80-110

Mean temperature coefficient for0 0(-20...55) C (%/ C):

cos j

=

1 (sin j= 1)cos j

=

0.5 (sin j= 0.5) lagging

max. 0.10

(max. 0.15)max. 0.15

(max. 0.25)

Climatic characteristics0- Operating temperature range: (-40...70) C0- Storage and transport temperature: (-50...80) C

0- Relative humidity at 20 C: max. 95%

Electrical and constructive characteristics

Meters for 3 wire networks

Reference types

T-2CA32M - on 3 wire networks, for active electric energy, class 2

T-2CA43M - on 4 wire networks, for active electric energy, class 2

[(4(5)(6)(7)A43XA(m), - in three-phase, two-phase 4(5)(6)(7)(8)A32XA(m)] networks for customized meters

(C option case)(T-2CA43D) - for meters complying with DIN 43857

(insulating case)(CPA 832) - in two-phase networks, 15(120)A

currents, according to NBR 8377 (C option case)

T-2CR32M - on3 wire networks, for reactive electric energy, class 3

T-2CR43M - on 4 wire networks, for reactive electric energy, class 3

OVERALL AND MOUNTING DIMENSIONS:Metal base meter

Overall dimensions(mm)

Mounting dimensions(mm)

x

£ 45 326 183 253 155

332 183 253 15545<Imax£120

> 120 350 200 262 168

Imax(A)

y a b

6.4

x

a

b

y

127

6.4

Insulating case meters

Extended terminal block cover

Hidden and visible upper fixing points

l

L

133 b

a/

/a

6.4

c

6.4

* For meters having the dimensions according to DIN 43857

Overall dimensions(mm)

Mounting dimensions(mm)

Connection Æ terminal

[mm]Imax [A] Link U-I

Direct

Direct/Current transformer

Direct

9

5

8

120

45

100

External/Internal

External/-

Internal

Direct/Current transformer 6 60 External

Direct 11 160 External/Internal

Terminal block

Direct/Current transformer 5 45 External

L l a/a

b c

248.5/223.5

265

264

330* 177 230/205 150 266

310 168 248.5/223.5

303 182150

266*

264

325 182 150

306 168 136

Hidden upper fixing point133

6.4

L a/

/a

6.4

c

b

l

Overall dimensions(mm)

Mounting dimensions(mm)

Terminal block

L l Connection Æ terminal

(mm)Imax (A)

316 182

297 168

Direct

Direct / Currenttransformer

Direct

9

5

8

120

100

a/a

b c

238.5/222

150

136

256

25545

Link U-I

External/Internal

External/-

Internal

Short terminal cover6.4

6.4

l

L

133 b

a/

/a c

Overall dimensions(mm)

Mounting dimensions(mm) Terminal block

L l a/a

b c Connection Æ terminal (mm)

Imax (A) Link U-I

255 238.5/222

255 Direct / Currenttransformer

455 External/-

269*

168

248.5/223.5

150

266 Direct 16011External/Internal

Direct / Currenttransformer

264*

258** 239/214 131 Direct

5

9

External/-

Internal, on frame

255

258

238.5/222

255

256Direct

10

8

9

100

100

120

Internal

Internal

External/Internal

264

256

45

120

* Hidden and visible upper fixing points** For two-phase meter according to NBR 8377 (hidden and visible upper fixing points)

CONNECTING DIAGRAMSTwo-phase watthour meters, direct connection

1

3

N

11621 3 4 5 7 8 109

Meters for active and reactive energy on 3 wire networks

1 2 3 4 5 6 7 8 9 10 11

S2

P2

S1

P1

P2

S2S1

P11

2

3

1 2 3 4 5 6 7 8 9 10 11

1

2

3

P1

S1 S2

P2

S1

P1

S2

P2

Connection through current

transformers

T-2CA32Mx T-2CR32Mx

1

2

3

A B A B

a b a b

S1 S2

P1 P2

1 2 3 4 5 6 7 8 9 10 11

S1

P1 P2

S2

Connection through current and voltage transformers

T-2CA32Mx

1

2

3

a b a b

A B A B S1

P1

S2

P2

S1

P1 P2

S2

1110987654321

T-2CR32Mx

Meters for active and reactive energy on 4 wire networks

1

2

3

N

1 2 3 4 5 6 7 8 9 10 11

1

2

3

1 2 3 4 5 6 7 8 9 10 11

N

1

2

3

N

S1

P1

S2

P2S1

P1

S2

P2 S1

P1

S2

P2

1 2 3 4 5 6 7 8 9 10 11

1

2

3

N

S1

P1

S2

P2 S1

P1

S2

P2 S1

P1

S2

P2

1 2 3 4 5 6 7 8 9 10 11

Direct connection

T-2CA43M(D)x, [4A43XA(m)]

T-2CR43Mx

Conectionthrough current

transformers

T-2CA43MxT-2CR43Mx

TECHNICAL DATA WATTHOUR METERS IN ACCORDANCE WITH MID DIRECTIVE:

Three-phase watthour meters direct connection or connection through current transformers for electric energy measuring on three-phase networks with four wires T-2CA43M type are certificated in accordance with MID Directive (2004/EC).Their construction and operation comply with the technical requirements provided by EN 50470-2, EN 50470-1.

Standard electrical values

Direct connection

- Reference voltage, Un: 230/400 V- Reference frequency, fn: 50 Hz- Class index: A- Transitional current, Itr: 0.5; 1; 1.5; 2 A- Reference current, Iref: 10 x Itr- Starting current, Ist: 0.05 Itr- Minimum current, Imin: 0.5 Itr- Maximum current, Imax: 60 Itr

Connection through current transformers- Reference voltage, Un: 230/400 V- Reference frequency, fn: 50 Hz- Class index: A- Transitional current, Itr: 0.5; 0.1; 0.25 A- Rated current (Reference current, Iref): 20 x Itr- Starting current, Ist: 0.06 Itr- Minimum current, Imin: 0.4 Itr- Maximum current, Imax: 1.2 Itr

Function conditions0- Temperature specified operating range: (-25...55) C

SYMBOLS:T-2CA43M x y z

T-2CA43M - symbol type

x - case type A - metallic; steel plate base, aluminium cover B - metallic; steel plate base, polycarbonate cover C - insulated; bakelite base, polycarbonate cover D - insulated; bakelite base, bakelite cover DD - insulated; bakelite base, bakelite cover, comply with DIN 43857

y - terminal cover type M1 - metallic; steel I1 - insulated, polycarbonate I2 - insulated; bakelite

z - register type B1 - normal (bidirectional) with 6 drums B3 - normal (bidirectional) with 7 drums