magrini - instrument transformers for sm6

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Instrument transformers

SM6 Cubicles

Feasibility rangeand referenced types

Catalogue UAL

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INDEX

FIRST PART

CURRENT TRANSFORMER

RECOMMENDATIONS FOR THE USE OF TABLES AND TECHNICALS NOTES Page 5,6 and 7

PANEL TYPE CRM

REFERENCED TYPES ARJP1/N2 F Page 8

ARJP2/N2 F Page 12

STANDARD TYPES ARJP1/N1 F and ARJP1/N2 F Page 9 and 10

ARJP2/N1 F and ARJP2/N2 F Page 13 and 14

PANELS TYPE 1250A DM1-A, DM1-D, DM1-W, DM1-Z, GBC-A, GBC-B

REFERENCED TYPES ARJP2/N2 F Page 12

ARJP3/N2 F Page 16

STANDARD TYPES ARJP1/N1 F and ARJP1/N2 F Page 9 and 10

ARJP2/N1 F and ARJP2/N2 F Page 13 and 14

ARJP3/N1 F and ARJP3/N2 F and ARJP3/N3 F Page 17

PANEL TYPE QMC

REFERENCED TYPES ARM1/N1 F Page 19

STANDARD TYPES ARM1/N1 F and ARM1/N2 F 0

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PANEL TYPE IMC


STANDARD TYPES ARM1/N1 F and ARM1/N2 F Page 20

ARM2/N1 F and ARM2/N2 F Page 23

PANELS TYPE DM1-A, DM1-D, DM1-W, DM2, GBC-A, GBC-B


STANDARD TYPES ARM3/N1 F and ARM3/N2 F Page 26

NOTA: N1, N2 and N3 MEANS THE NUMBER OF SECONDARIES

F MEANS THAT THERE IS NOT BASE PLATE

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SECOND PART

VOLTAGE TRANSFORMERS TYPE PHASE-EARTH

RECOMMENDATIONS FOR THE USE OF TABLES AND TECHNICALS NOTES Page from 28 to 32

PANELS TYPE CM, DM1-A, DM1-D, DM2

REFERENCED TYPES VRQ2n/S1 and VRQ2n/S2 Page 33

STANDARD TYPES VRQ2n/S1, VRQ2n/S2 and VRQ2n/S3 Page 34

PANEL TYPE CRM


PANELS TYPE GBC-A, GBC-B

REFERENCED TYPES VRQ2n/S1 and VRQ2n/S2 Page 33

VRM3n/S2 Page 38


VRM3n/S1 and VRM3n/S2 Page 39

VOLTAGE TRANSFORMERS TYPE PHASE-PHASE

RECOMMENDATIONS FOR THE USE OF TABLES AND TECHNICALS NOTES Page from 28 to 32

PANEL TYPE CRM

STANDARD TYPES VRC1/S1 F and VRC1/S2 F 1

PANEL TYPE DM2, CM2, GBC-A, GBC-B

REFERENCED TYPES VRC2/S1 F Page 43

STANDARD TYPES VRC2/S1 F and VRC2/S2 F Page 44

NOTA: S1, S2 and S3 MEANS THE NUMBER OF SECONDARIES

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FIRST PART

CURRENT TRANSFORMERS

PREFERABLY USE the equipment selected and marked as REFERENCED

RECOMMENDATIONS FOR THE USE OF THEFEASIBILITY AND COMPUTATION SUPPORTS

_______________

¶ CHECK NEEDS AND NECESSARY INFORMATIONACCURATELY

· USE EQUIPMENT MARKED AS REFERENCE

¸ CHECK READLY AVAILABLE FEASIBILITYSECTIONS DIRECTLYTO APPLY KEYS TO FEASIBILITY TABLESCORRECTLY, PLEASE SEE ON PAGE 6

¹ CONSULT IF FEASIBILITY RANGE IS NOTAVAILABLE OR FOR OTHERS CHARACTERISTICS

º USE CONSULTATION AND ORDER CHARTS

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KEYS TO THE VARIOUS TABLES TO DEFINE FEASIBILITY

1) Define Ipn rated primary currentUse primary gauges defined by standard (IEC):10, 12,5, 20, 25, 30, 40, 50, 60 and 75 A and their decimal multiples.

2) Define Ith rated short-time thermal current for 1 secondShort-circuit current usually lasts 1 second.Should this value be different (equal to a lenght "t"), calculate the following:

Ith (for 1 sec.) = Ith x √t

example: 25 kA for 3 sec. >> 25 x √3 = 43,3 kA for 1 sec.

3) Calculate coefficient "K"The above reperesents the key to the various tables

Ith for 1 sec.K = Ipn

example: Ipn = 100 A , Ith = 12,5 kA 1 sec. >> K = 12500 / 100 = 125

4) Finding position on the tableLocate column "K" and stop on the line corresponding to a value higher than K.

example: K calculate value = 125 >> ligne K = 150

5) Check feasibility A possible current transformer will feature the performances shown in the columns

identified by boxes :

For perotection secondary is true, only for choosing in the catalogue , the following formule:

VA x FL = constant

example: 10VA 5P10 ( VA x FL= 10 x 10= 100 ) >> 5VA 5P20 ( VA x FL= 5 x 20= 100 )

Current transformer can now be ordered on our special order forms

order formcontact us for other available features using the consultation forms

consultation form

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TECHNICAL NOTES

Diagrams of the terminals markings according to IEC standard.

Current transformer featuring double ratio through primary coulping.types ARM1, ARM2, ARM3

Burden values are the same for both ratios.

SERIAL PRIMARY COUPLING

LOW RATIO

PARALLEL PRIMARY COUPLING

HIGH RATIO

Current transformer featuring double ratio through connection to secondary.types ARJP1, ARJP2, ARJP3

Burden values are different for each of the two ratios.

CT with ONE SECONDARY WINDING CT with TWO SECONDARY WINDINGS

S1-S2 LOW RATIO 1S1-1S2 2S1- 2S2 LOW RATIOS1-S3 HIGH RATIO 1S1-1S3 2S1- 2S3 HIGH RATIO

WARNING !The secondary open winding of a CT is dangereus!The unused secondary windings fo a CT must be short-circuited.

P1 C1 C2 P2

P1 C1 C2 P2

P1 P2

1S1 1S2 1S3 2S1 2S2 2S3

P1 P2

S1 S2 S3

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REFERENCED CURRENT TRANSFORMERS

Type ARJP1/N2 F

Panels type SM6 ( CRM )

Dimensions Drawing n° H 103441

Characteristics Standard reference IEC 185 and NFC 42502

Rated highest voltage : 24 kV

Rated continous thermal current 1,2 x In

Frequency 50 and 60 Hz

ARJP1/N2 F Short-time current ratings secondaries1st 2nd

reference ratio I th t I dyn measure protec tionnumber kA sec. kA c l 0,5

r.m .s. peak FS<10

Secondary for measure 5A and secondary for protection 5A

3735319 50/5-5 4 1 10 7,5 VA 5 VA 5P103735320 100/5-5 10 1 25 7,5 VA 5 VA 5P103735321 150/5-5 10 1 25 7,5 VA 5 VA 5P103735322 200/5-5 10 1 25 7,5 VA 5 VA 5P10

For others characteristics see next page

pag. 9/45For others characteristics please contact us.

CURRENT TRANSFORMER

Type ARJP1/N1 F - ARJP1/N2 FSingle Primary Ratio SR

Panels type SM6 ( CRM, DM1-1250 A )


Characteristics Standard reference IEC 185Rated highest voltage : 7,2 - 12 - 17,5 - 24 KVRated continous thermal current 1,2 x InFrequency 50 or 60 HzRated secondary current standard 5 or 1 A.

Table of options:

N° of secondaries for CT 1 2STANDARD TYPE ARJP1/N1 F ARJP1/N2 F

1st measure secondaryClasse 0,5 Fs = 10

VAalternatively 5 7,5 10 15 20 20 30 30 30 30 30

"K" Ipn measure secondary protection secondary 2nd protection secondary

K=Ith/Ipn Rated primary Cl. 0,5 Fs=10 Cl. 5P Fl=10 Cl. 5P Fl=10

Ith max current [A] VA VA VA

25 kA for 1s SR 7,5 10 15 20 30 50 5 7,5 10 15 20 30 50 5 5 5 7,5 5 10 10 15 20 30 50

100 10 to 800

150 10 to 150

200 10 to 100

250 10 to 100

300 10 to 75

400 10 to 50

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CURRENT TRANSFORMER

Type ARJP1/N1 FDouble Primary Ratio DR

Panels type SM6 ( CRM, DM1-1250 A )


Characteristics Standard reference IEC 185Rated highest voltage : 7,2 - 12 - 17,5 - 24 KVRated continous thermal current 1,2 x InFrequency 50 or 60 HzRated secondary current standard 5 or 1 A.Double primary ratio through connection to secondary.

Value “K=Ith/Ipn” must de fixed in comparison with the smaller rated primary current ratio .Values of outputs are gived for the smaller ratio, for the high ratio they are the double.

Table of options:

D

For others characteristics please contact us.

N ° o f s e c o n d a r ie s fo r C TS T AN D A R D T Y P E

" K " I p n m e a s u r e s e c o n d a r y

K = I th / I p n R a te d C l a s s 0 ,5p r i m a r y F s = 1 0

Ith m a x c u r r e n t [A ] VA2 5 k A fo r 1 s D R 7 , 5 1 0 1 5 2 0 3 0 5 0 5 7 , 5 1 0 1 5 2 0 3 0 5 0

1 0 0 1 0 -2 0 to 4 0 0 -8 0 0

1 5 0 1 0 -2 0 to 1 5 0 -3 0 0

2 0 0 1 0 -2 0 to 1 0 0 -2 0 0

2 5 0 1 0 -2 0 to 1 0 0 -2 0 0

3 0 0 1 0 -2 0 to 7 5 - 1 5 0

4 0 0 1 0 -2 0 to 5 0 - 1 0 0

a lte r n a tiv e ly

A R J P 1 /N 1 F1

p r o te c tio n s e c o n d a r yC l a s s 5 P

F l = 1 0VA

pag. 11/45H 103441

pag. 12/45


Type ARJP2/N2 F


Characteristics Standard reference IEC 185 and NFC 42502Rated highest voltage : 24 kVRated continous thermal current 1,2 x InFrequency 50 and 60 Hz

CELLULES SM6 ( CRM )

CELLULES SM6 ( DM1 1250 A, GBC-A 1250 A, GBC-B 1250 A )

ARJP2/N2 F Short-time current ratings secondaries1st 2nd TARIFF

reference ratio I th t I dyn measure protectionnumber kA sec. kA cl 0,5 FRF

r.m.s. peak FS<10


3735325 50/5-5 10 1 25 7,5 VA 5VA 5P10 5649



reference ratio I th t I dyn measure protectionnumber kA sec. kA cl 0,5

r.m.s. peak FS<10


3730519 600/5-5 25 1 62,5 20 VA 7,5 VA 5P203730520 750/5-5 25 1 62,5 20 VA 7,5 VA 5P20


3730523 600/1-1 25 1 62,5 20 VA 7,5 VA 5P203730524 750/1-1 25 1 62,5 20 VA 7,5 VA 5P20

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CURRENT TRANSFORMER

Type ARJP2/N1 F - ARJP2/N2 F Single Primary Ratio SR

Panels type SM6 ( CRM, DM1-1250 A, GBCA 1250 A, GBCB 1250 A )


Characteristics Standard reference IEC 185 Rated highest voltage : 7,2 - 12 - 17,5 - 24 KV Rated continous thermal current 1,2 x In Frequency 50 or 60 Hz Rated secondary current standard 5 or 1 A.

Table of options:


N° of secondaries for CT 1 2STANDARD TYPE ARJP2/N1 F ARJP2/N2 F

1st measure secondary

Cl. 0,5 Fs=10VA

alternatively 5 7,5 10 15 20 20 30 30 30 30 30


K=Ith/Ipn Rated primary Cl. 0,5 Fs=10 Cl. 5P Fl=10 Cl. 5P Fl=10 Ith max current [A] VA VA VA

25 kA for 1s SR 7,5 10 15 20 30 50 5 7,5 10 15 20 30 50 5 5 5 7,5 5 10 10 15 20 30 50

100 10 to 800

150 10 to 150

200 10 to 100

250 10 to 100

300 10 to 75

400 10 to 50

500 10 to 50

Switch to the smaller type ARJP1

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CURRENT TRANSFORMER

Type ARJP2/N1 F - ARJP2/N2 F Double Primary Ratio DR

Panels type SM6 ( CRM, DM1-1250 A, GBCA 1250 A, GBCB 1250 A )


Characteristics Standard reference IEC 185Rated highest voltage : 7,2 - 12 - 17,5 - 24 KVRated continous thermal current 1,2 x InFrequency 50 or 60 HzRated secondary current standard 5 or 1 A.Double primary ratio through connection to secondary.

Value “K=Ith/Ipn” must de fixed in comparison with the smaller rated primary current ratio .Values of outputs are gived for the smaller ratio, for the high ratio they are the double.

Table of options:

N° of secondaries for CT 1 2STANDAR D T YPE ARJP2/N1 F ARJP2/N2 F


Cl. 0,5 Fs=10VA

alternatively 5 7,5 10 15 20 20 30 30 30 30 30



25 kA for 1s DR 7,5 10 15 20 30 50 5 7,5 10 15 20 30 50 5 5 5 7,5 5 10 10 15 20 30 50

100 10-20 to 400-800

150 10-20 to 150-300

200 10-20 to 100-200

250 10-20 to 100-200

300 10-20 to 75-150

400 10-20 to 50-100

500 10-20 to 50-100

Switch to the smaller type ARJP1


pag. 15/45H 103442

pag. 16/45For others characteristics see next page


Type ARJP3/N2 F

Panels type SM6 ( DM1 1250 A,GBC-A 1250 A, GBC-B 1250 A )




reference ratio I th t I dyn measure protectionnumber kA sec. kA cl 0,5

r.m.s. peak FS<10


3730521 1000/5-5 25 1 62,5 30 VA 10 VA 5P203730522 1250/5-5 25 1 62,5 30 VA 10 VA 5P20


3730525 1000/1-1 25 1 62,5 30 VA 10 VA 5P203730526 1250/1-1 25 1 62,5 30 VA 10 VA 5P20

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CURRENT TRANSFORMER

Type ARJP3/N1 F - ARJP3/N2 F - ARJP3/N3 FSingle and Double Primary Ratio

Panels type SM6 ( DM1 - 1250 A, GBCA 1250 A, GBCB 1250 A )


Characteristics Standard reference IEC 185Rated highest voltage : 7,2 - 12 - 17,5 - 24 KVRated short-circuit thermal current max: 25 kA for 1sRated continous thermal current 1,2 x InFrequency 50 or 60 HzRated secondary current standard 5 or 1 A.Double primary ratio through connection to secondary.

Values of outputs are gived for the smaller ratio, for the high ratio they are the double.

Table of options:


N° of secondaries for CT 1 2 3ST ANDARD T YPE ARJP3/N1 F ARJP3/N2 F ARJP3/N3 F

1st meas.sec.

Cl. 0,5 Fs=10VA

5 10 15 20 30

1st measure secondary 2nd pro. sec.

Class 0,5 Cl. 5P Fl=10VA VA

alternatively 5 7,5 10 15 20 20 30 30 30 30 30 5 5 7,5 10 15

Ipn measure secondary protection secondary 2nd protection secondary 3rd pro.sec.

Rated primary Cl. 0,5 Fs=10 Cl. 5P Fl=10 Cl. 5P Fl=10 Cl. 5P Fl=15current [A] VA VA VA VA

SR 7,5 10 15 20 30 50 5 7,5 10 15 20 30 50 5 5 5 7,5 5 10 10 15 20 30 50 5 5 7,5 10 15

1000

1200

1250

DR

500-1000

600-1200

pag. 18/45H 103443

pag. 19/45


Type ARM1/N1 F

Panels type SM6 ( QMC )



DELIVERY 11 working days EXWQUANTITY min. n° 1 piece, max. n° 15 pieces


ARM1/N1 F Short-time current ratingssecondary

reference ratio I th t I dyn measure or protectionnumber kA sec. kA (equivalence)

r.m .s. peak


3731048 10/5 0,8 1 2 10 VA cl.0,5 Fs<10 or 5 VA 5P153731069 15/5 1,2 1 3 10 VA cl.0,5 Fs<10 or 5 VA 5P153731070 20/5 1,6 1 4 10 VA cl.0,5 Fs<10 or 5 VA 5P153731071 25/5 2 1 5 10 VA cl.0,5 Fs<10 or 5 VA 5P153731073 50/5 4 1 10 10 VA cl.0,5 Fs<10 or 5 VA 5P153731563 100/5 8 1 20 10 VA cl.0,5 Fs<10 or 5 VA 5P153731565 200/5 12,5 1 31,5 10 VA cl.0,5 Fs<10 or 5 VA 5P15

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CURRENT TRANSFORMER

Type ARM1/N1 F - ARM1/N2 FSingle and Double Primary RatioPanels type SM6 ( QMC, IMC )


Characteristics Standard reference IEC 185Rated highest voltage : 7,2 - 12 - 17,5 - 24 KVRated continous thermal current 1,2 x InFrequency 50 or 60 HzRated secondary current standard 5 or 1 A.Double primary ratio through primary coupling.

Value “K=Ith/Ipn” must de fixed in comparison with the smaller rated primary current ratio .

Table of options:


N° of secondaries for CT 1 2STANDARD TYPE ARM1/N1 F ARM1/N2 F

1st measure secondaryCl. 0,5 Fs=10

VA

alternatively 5 7,5 10 15 20 20 30 30 30 30 30

"K" Ipn measure second. protection second. 2nd protection secondary


25 kA for 1s SR DR 7,5 10 15 20 30 50 5 7,5 10 15 20 30 50 5 5 5 7,5 5 10 10 15 20 30 50

100 10 to 800 10-20 to 400-800

150 10 to 150 10-20 to 150-300

200 10 to 100 10-20 to 100-200

250 10 to 100 10-20 to 100-200

300 10 to 75 10-20 to 75-150

400 10 to 50 10-20 to 50-100

pag. 21/45H 103003

pag. 22/45


Type ARM2/N2 F

Panels type SM6 ( IMC )



DELIVERY 11 workings days EXWQUANTITY min. n° 1 piece, max. n° 15 pieces


ARM2/N2 F Short-time current ratings secondaries1st 2nd

reference ratio I th t I dyn measure protectionnumber kA sec. kA cl 0,5 5P

r.m .s. peak FS<10 10


3731576 50/5-5 12,5 1 31,5 7,5 VA 10 VA3731577 75/5-5 16 1 40 7,5 VA 10 VA3731578 100/5-5 25 0,8 62,5 7,5 VA 10 VA3731579 150/5-5 25 1 62,5 7,5 VA 10 VA3731580 200/5-5 25 1 62,5 7,5 VA 10 VA3731582 300/5-5 25 1 62,5 7,5 VA 10 VA3731583 400/5-5 25 1 62,5 7,5 VA 10 VA3731584 500/5-5 25 1 62,5 7,5 VA 10 VA3731585 600/5-5 25 1 62,5 7,5 VA 10 VA


CURRENT TRANSFORMER

Type ARM2/N1 F - ARM2/N2 FSingle and Double Primary Ratio

Panels type SM6 ( IMC )


Characteristics Standard reference IEC 185Rated highest voltage : 7,2 - 12 - 17,5 - 24 KVRated continous thermal current 1,2 x InFrequency 50 or 60 HzRated secondary current standard 5 or 1 A.Double primary ratio through primary coupling.


Table of options:N° of secondaries for CT 1 2STANDARD TYPE ARM2/N1 F ARM2/N2 F

1st measure secondaryCl 0,5 Fs=10

VA

alternatively 5 7,5 10 15 20 20 30 30 30 30 30

"K" Ipn measure second protection second. 2nd protection secondary


25 kA for 1s SR DR 7,5 10 15 20 30 50 5 7,5 10 15 20 30 50 5 5 5 7,5 5 10 10 15 20 30 50

100 10 to 800 10-20 to 400-800

150 10 to 300 10-20 to 300-600

200 10 to 300 10-20 to 300-600

250 10 to 200 10-20 to 200-400

300 10 to 150 10-20 to 150-300

400 10 to 100 10-20 to 100-200

500 10 to 50 10-20 to 100-200

Switch to the smaller type ARM1

pag. 24/45H 103004

pag. 25/45

REFERENCED CURRENT TRANSFORMERSType ARM3/N2 F

Panel type SM6 ( DM1, DM2, GBC-A, GBC-B )


Characteristics Standard reference IEC 185 and NFC 42502Rated highest voltage : 24 kVRated continous thermal current 1,2 x InFrequency 50 and 60 HzDouble primary ratio through primary coupling.

For others characteristics please contact us

ARM3/N2 F Short-time current ratings secondariesserial coupling parallel coupling 1st 2nd

reference ratio I th t I dyn I th t I dyn measure protectionnumber kA sec. kA kA sec. kA cl 0,5

r.m.s. peak r.m.s. peak FS<10Secondary for measure 5A and secondary for protection 5A

3731074 10-20/5-1 5 1 12,5 10 1 25 7,5 VA 1VA 10P303731078 20-40/5-1 12,5 0,8 31,5 25 0,8 62,5 7,5 VA 1VA 10P303731080 25-50/5-1 12,5 0,8 31,5 25 0,8 62,5 7,5 VA 1VA 10P303731082 50-100/5-1 12,5 1 31,5 25 1 62,5 7,5 VA 1VA 10P303731084 75-150/5-1 12,5 1 31,5 25 1 62,5 7,5 VA 1VA 10P303731086 100-200/5-1 12,5 1 31,5 25 1 62,5 7,5 VA 1VA 10P303731088 200-400/5-1 12,5 1 31,5 25 1 62,5 7,5 VA 1VA 10P303731703 300-600/5-1 25 1 62,5 50 1 125 7,5 VA 1VA 10P30

Secondary for measure 5A and secondary for protection 5A3731090 10-20/5-5 5 1 12,5 10 1 25 7,5 VA 5 VA 5P103731092 15-30/5-5 8 1 20 16 1 40 7,5 VA 5 VA 5P103731094 20-40/5-5 12,5 0,8 31,5 25 0,8 62,5 7,5 VA 5 VA 5P103731096 25-50/5-5 12,5 1 31,5 25 1 62,5 7,5 VA 5 VA 5P103731097 25-50/5-5 12,5 0,8 31,5 25 0,8 62,5 15 VA 5 VA 5P103731098 50-100/5-5 21 1 52,5 42 1 105 7,5 VA 5 VA 5P153731099 50-100/5-5 14,5 1 36,5 29 1 72,5 30 VA 5 VA 5P15

equivalence 30 VA 7,5 VA 5P103731100 75-150/5-5 25 1 62,5 25 1 62,5 7,5 VA 5 VA 5P153731101 75-150/5-5 16 1 40 32 1 80 30 VA 5 VA 5P15

equivalence 30 VA 7,5 VA 5P103731102 100-200/5-5 25 1 62,5 25 1 62,5 7,5 VA 5 VA 5P15

equivalence 20 2 62,5 20 2 62,5 " "3731103 100-200/5-5 16 1 40 32 1 80 30 VA 7,5 VA 5P15

equivalence 30 VA 15 VA 5P103731104 200-400/5-5 25 1 62,5 25 1 62,5 7,5 VA 5 VA 5P15

equivalence 20 2 62,5 20 2 62,5 " "3731105 200-400/5-5 25 1 62,5 25 1 62,5 30 VA 7,5 VA 5P15

equivalence 30 VA 15 VA 5P103731708 300-600/5-5 25 1 62,5 25 1 62,5 7,5 VA 5 VA 5P15

equivalence 20 2 62,5 20 2 62,5 " "3730426 300-600/5-5 25 1 62,5 25 1 62,5 30 VA 7,5 VA 5P15

equivalence 30 VA 15 VA 5P10


CURRENT TRANSFORMER

Type ARM3/N1 F - ARM3/N2 FSingle and Double Primary Ratio

Panels type SM6 ( DM1, DM2, GBC-A, GBC-B )


Characteristics Standard reference IEC 185Rated highest voltage : 7,2 - 12 - 17,5 - 24 KVRated continous thermal current 1,2 x InFrequency 50 or 60 HzRated secondary current standard 5 or 1 ADouble primary ratio through primary coupling.


Table of options:

N° of secondaries for CT 1 2STANDARD TYPE ARM3/N1 F ARM3/N2 F


Cl 0,5 Fs=10VA

alternatively 5 7,5 10 15 20 20 30 30 30 30 30

"K" Ipn measure second protection second 2nd protection secondary

K=Ith/Ipn Rated primary Cl 0,5 Fs=10 Cl 5P Fl=10 Cl 5P Fl=10 Ith max current [A] VA VA VA

25 kA for 1s SR DR 7,5 10 15 20 30 50 5 7,5 10 15 20 30 50 5 5 5 7,5 5 10 10 15 20 30 50

100 10 to 800 10-20 to 400-800

150 10 to 300 10-20 to 300-600

200 10 to 300 10-20 to 300-600

250 10 to 200 10-20 to 200-400

300 10 to 150 10-20 to 150-300

400 10 to 100 10-20 to 100-200

500 10 to 50 10-20 to 100-200

pag. 27/45H 103005

pag. 28/45

SECOND PART

VOLTAGE TRANSFORMERS

PREFERABLY USE the equipment selected and marked as REFERENCED

RECOMMENDATIONS FOR THE USE OF THE FEASIBILITYAND COMPUTATION SUPPORTS

_______________

¶ CHECK NEEDS AND NECESSARY INFORMATIONACCURATELY

· USE EQUIPMENT MARKED AS REFERENCE

¸ CHECK READLY AVAILABLE FEASIBILITY SECTIONS DIRECTLY

TO APPLY KEYS TO FEASIBILITY TABLESCORRECTLY, PLEASE SEE ON PAGE 29

¹ CONSULT IF FEASIBILITY RANGE IS NOT AVAILABLEOR FOR OTHERS CHARACTERISTICS

º USE CONSULTATION AND ORDER CHARTS

pag. 29/45

KEY S TO THE VARIOUS TABLES TO DEFINE FEASIBILITY

1) Define Up rated primary voltage

According to the system voltage (U) and the type of transformer's connections: between phase andground (Up = U / √ 3) or betwwee phases (Up = U).Guaranteed transformer accuracy is between 0,8 Un and 1,2 Un. Make use of this feature to choosestandard voltage values.

example: At 6600:√3 V voltage, guaranteed accuracy ranges between 5300: √3 to 7900:√3.Consequentely, when a 6900: √3 voltage transformer is required, a standard value of6600:√3 can be used.

2) Defining the rated insulation level

Rated insulation level must be the one immediatly above assigned voltage. To this regard the IECstandard advises :· Rated lightning-impulse voltage· Rated power-frequency voltage· Highest voltage for equipment ( Um) which result in:

U = 3 - 3,3 - 5 - 5,5 - 6 - 6,6 kV Rated Insulation level >> 7,2/20 (see note) / 60 kVU = 10 - 11 kV Rated Insulation level >> 12/28 (see note) / 75 kVU = 13,8 - 15 kV Rated Insulation level >> 17,5/38 (see note) / 95 kVU = 20 - 22 kV Rated Insulation level >> 24/50 (see note) /125 kV

NOTE: The power frequency dielectric test, according to IEC standards is performed using thevalue calculated using this formula:

5 x Up with maximum value of the relative isolation degree.exemples:U = 22 kV TT phase-earth >> insulation level 24 / 50 / 125 kV >> Up=U / √3=22 / √3=12,7 kVand 5 x 12,7 = 63,5 kV therefore the level is 24 / 50 / 125 kVU = 3,3 kV TT phase-ground >> insulation level 7,2 / 20 / 60 kV >> Up=U / √3=3,3 / √3=1,9 kVand 5 x 1,9 = 10 kV therefore the level is 7,2 / 10 / 60 kV

3) Define Us rated secondary voltage

Standard values are 100 and 110 divided √3, for star-connected measure and protection coils, and100 et 110 divided 3 for open triangle connected residual voltage.

4) Define the Frequency

Values are 50 or 60 Hz F Reversal not possible in case of error

pag. 30/45

5) Rated voltage factor

This is the factor multiplying primary voltage Up to define the hihest voltage for equipment Um.

1,9 for 8 hours for phase-ground voltage transformers1,2 continuous for phase-phase voltage transformers

6) Finding position on the table

Locate the column corresponding to the number of secondary coil windings and to the type of output(either simultaneous or not).Please refer to technical notes on this topic.

7) Check feasibility

The performances marked by boxes : are possible.

Voltage transformer can now be ordered on our special order forms

order form

contact us for other available features using the consultation forms

consultation form

pag. 31/45

TECHNICAL NOTES

Diagrams of the terminal markings according to IEC standards

Phase-ground voltage transformers with:

one secondary two secondaries two secondaries(measure or protection) (one measure and one residual voltage) (two measure and/or protection)

non simultaneous output simultaneous output

three secondaries double primary ratio(two measure and/or protection and one for residual voltage) (by connection to secondary)simultaneous output for the first two and a1 - n LOW RATIOnon simultaneous for the third a2 - n HIGH RATIO

Phase-phase voltage transformers:

one secondary double primary ratio (by connection to secondary) (measure or protection) a1 - b LOW RATIO

a2 - b HIGH RATIO

A (P1) N (P2)

a (1S1) n (1S2)

A (P1) N (P2)

1a 1n 2a 2n(1S1) (1S2) (2S1) (2S2)

A (P1) N (P2)

a n da dn(1S1) (1S2) (2S1) (2S2)

A (P1) N (P2)

1a 2n 2a 2n da dn(1S1) (1S2) (2S1) (2S2) (3S1) (3S2)

A (P1) N (P2)

a1 (1S1) a2 (1S3) n (1S2)

A B

a1 a2 b

A B

a b

pag. 32/45

TECHNICAL NOTES

Output

The output is simultaneous when two secondary windings are used for measure or for protection.The output is not simultaneous only when there is a winding for the residual voltage besides asecondary one for measure or protection.The winding for residual voltage has an open-triangle connection. During normal service, voltage isnull at the triangle terminals, therefore the output of this winding is null.When out of order, current at the triangle terminals activates the resistance and/or the relays.When out of order, the accuracy of the secondary measure or protection coil winding is notguaranteed.

The following is a typical connection of phase-ground voltage transformers:

Isolated N (P2) terminal.

Standard manifacturing of phasee-ground voltage transformers features the N (P2) terminal in theterminal box isolated from earth by 3 kV.Transformers are always delivered with this terminal connected to the earth terminal by a strip.In some cases this N (P2) terminal cannot be located in the terminal box. In any case, it is connectedto the ground inside the transformer.These cases include the following:+ VT with three secondary windings.+ VT with two secondary windings and double primary ratio.

Open triangle formed bywindings for residual

voltage.Here is the connection ofthe resistance and/or of

the voltage relay.

A A A

N N N

n

a a a

dadada

n n

dn dn dn

Primary winding

Measure orprotectionsecondary

winding

Secondary windingfor residual voltage

pag. 33/45For others characteristics see next page

REFERENCED VOLTAGE TRANSFORMERS

Type VRQ2n/S1 - VRQ2n/S2

Panels type SM6 ( CM, DM1, DM2, GBC-A, GBC-B )

Description Voltage transformer for phase-ground connection with terminal P2 (N)isolated from earth 3 kV.


Characteristics Standard reference IEC 186 and NFC 42501Rated voltage factor: 1,9 for 8 hoursThermal burden: 250 VA

Rated output RatedReference Ratio and accuracy insulation Output Frequencynumber class level

3731726 10000: r.3 / 100: r.3 30 VA cl 0,5 12 kV simultaneous 50 and 60 Hz100: r.3 30 VA cl 0,5

3735116 15000: r.3 / 100: r.3 30 VA cl 0,5 17,5 kV simultaneous 50 and 60 Hz100: r.3 30 VA cl 0,5

3731729 20000: r.3 / 100: r.3 30 VA cl 0,5 24 kV simultaneous 50 and 60 Hz100: r.3 30 VA cl 0,5

3735497 11000: r.3 / 110: r.3 30 - 50 VA cl 0,5 12 kV non simultaneous 50 and 60 Hz110: 3 30 VA 3P

3736230 13800: r.3 / 110: r.3 30 - 50 VA cl 0,5 17.5 kV non simultaneous 50 and 60 Hz110: 3 30 VA 3P

3735153 15000: r.3 / 100: r.3 30 - 50 VA cl 0,5 17.5 kV non simultaneous 50 and 60 Hz100: 3 30 VA 3P



3735155 15000:r.3-20000:r.3 / 30 - 50 VA cl 0,5 24 kV ______ 50 and 60 Hz100: r.3

pag. 34/45


Type VRQ2n/S1 - VRQ2n/S2 - VRQ2n/S3Panels type SM6 ( CM, DM1, DM2, GBC, GBCA, GBCB )

DescriptionVoltage transformer for phase-ground connection with terminal P2 (N) isolatedfrom earth 3 kV ( except for the type with three secondaries)

DimensionsDrawing n° H 103002

CharacteristicsStandard reference IEC 186Standard primary voltage Up: 3-3,3-5-5,5-6-6,6 10-11 13,8-15 20-22 :r3 kVRated insulation level : 7,2 kV 12 kV 17,5 kV 24 kVRated secondary voltage Us: 100: r.3 100 : 3 110: r.3 110 : 3 VFrequency 50 or 60 HzRated voltage factor: 1,9 for 8 hoursThermal burden: 250 VA

Table of options.


TYPE VRQ2n/S1 VRQ2n/S2 VRQ2n/S3N° of secondaries for VT 1 2 3

Measure 1st Measure 1st Measure 1st and 2nd Measure

Application or 2nd Protection or Protection or Protection

Protection or Measure 2nd residual 3rd residual

voltage voltage

100: r.3 100: r.3 - 100: r.3 100: r.3 - 100:3 100: r.3 or 110: r.3

Secondary voltage or or or and

110: r.3 110: r.3 - 110: r.3 110: r.3 - 110:3 100:3 or 110:3

Output ------- Simultaneous Non simultaneous Simultaneous

Non simultaneous

3rd Class ------- ------- ------- 3P

secondary Output ------- ------- ------- 50 50 75

2nd Class ------- 0,5 or 1 3P 0,5 or 1

secondary Output ------- 10 15 20 15 30 50 50 50 75 50 50 75 10 20 30

1st Class 0,2 0,5 0,2 0,5 0,2 0,5 0,5

secondary Output 15 20 30 30 50 75 10 15 20 15 30 50 15 20 30 30 50 75 10 20 30

pag. 35/45H 103002

pag. 36/45

VOLTAGE TRANSFORMER

Type VRQ3n/S1 - VRQ3n/S2 - VRQ3n/S3Panels type SM6 ( CRM )

DescriptionVoltage transformer for phase-ground connection with terminal P2 (N) isolatedfrom earth 3 kV ( except for the type with three secondaries)


CharacteristicsStandard reference IEC 186Standard primary voltage Up: 3 - 3,3 - 5 - 5,5 - 6 - 6,6 10 - 11 13,8 - 15 :r3 kVRated insulation level : 7,2 kV 12 kV 17,5 kVRated secondary voltage Us: 100: r.3 100 : 3 110: r.3 110 : 3 VFrequency 50 or 60 HzRated voltage factor: 1,9 for 8 hoursThermal burden: 250 VA

Table of options.


TYPE VRQ3n/S1 VRQ3n/S2 VRQ3n/S3N° of secondaries for VT 1 2 3

Measure 1st Measure 1st Measure 1st and 2nd Measure

Application or 2nd Protection or Protection or Protection

Protection or Measure 2nd residual 3rd residual

voltage voltage

100: r.3 100: r.3 - 100: r.3 100: r.3 - 100:3 100: r.3 or 110: r.3

Secondary voltage or or or and

110: r.3 110: r.3 - 110: r.3 110: r.3 - 110:3 100:3 or 110:3

Output ------- Simultaneous Non simultaneous Simultaneous

Non simultaneous

3rd Class ------- ------- ------- 3P

secondary Output ------- ------- ------- 50 50 75

2nd Class ------- 0,5 ou 1 3P 0,5 ou 1

secondary Output ------- 10 15 20 15 30 50 50 50 75 50 50 75 10 20 30

1st Class 0,2 0,5 0,2 0,5 0,2 0,5 0,5

secondary Output 15 20 30 30 50 75 10 15 20 15 30 50 15 20 30 30 50 75 10 20 30

pag. 37/45H 102617

pag. 38/45

DELIVERY 11 working days EXWQUANTITY min. n° 1 piece, max. n° 9 pieces



Type VRM3n/S2Panels type SM6 ( GBC-A, GBC-B )

Description

Voltage transformer for phase-ground connection with place for primary fuse andterminal P2 (N) isolated from earth 3 kV.

Dimensions

Drawing n° H 103559

Characteristics

Standard reference IEC 186 and NFC 42501Rated voltage factor: 1,9 for 8 hoursThermal burden: 250 VA

Rated output RatedReference Ratio and accuracy insulation Output Frequency

number class level

3736232 10000: r.3 / 100: r.3 30 - 50 VA cl 0,5 12 kV non simultaneous 50 and 60 Hz/ 100: 3 50 VA 3P

3736233 15000: r.3 / 100: r.3 30 - 50 VA cl 0,5 17.5 kV non simultaneous 50 and 60 Hz/ 100: 3 50 VA 3P

3736234 20000: r.3 / 100: r.3 30 - 50 VA cl 0,5 24 kV non simultaneous 50 and 60 Hz/ 100: 3 50 VA 3P



Type VRM3n/S1 - VRM3n/S2Panels type SM6 ( GBC, GBCA, GBCB )

DescriptionVoltage transformer for phase-ground connection with place for primary fuse andterminal P2 (N) isolated from earth 3 kV.


CharacteristicsStandard reference IEC 186Standard primary voltage Up: 3-3,3-5-5,5-6-6,6 10-11 13,8-15 20-22 :r3 kVRated insulation level : 7,2 kV 12 kV 17,5 kV 24 kVRated secondary voltage Us: 100: r.3 100 : 3 110: r.3 110 : 3 VFrequency 50 or 60 HzRated voltage factor: 1,9 for 8 hoursThermal burden: 250 VA

Table of options.T YPE VRM3n/S1 VRM3n/S2

N° of secondaries for VT 1 2Measure 1st Measure 1st Measure

Application or 2nd Protection or Protection

Protection or Measure 2nd residual

vo ltage

100: r.3 100: r.3 - 100: r.3 100: r.3 - 100:3

Secondary voltage or or or

110: r.3 110: r.3 - 110: r.3 110: r.3 - 110:3

Output ------- Simultaneous Non simultaneous

2nd Class ------- 0,5 or 1 3P

secondary Output ------- 10 15 20 15 30 50 50 50 75 50 50 75

1st Class 0,2 0,5 0,2 0,5 0,2 0,5

secondary Output 15 20 30 30 50 75 10 15 20 15 30 50 15 20 30 30 50 75

pag. 40/45H 103559



Type VRC1/S1 F - VRC1/S2 FPanels type SM6 ( CRM )

Description

Voltage transformer for phase-phase connection

Dimensions


Characteristics

Standard reference IEC 186Standard primary voltage Up: 3-3,3-5-5,5-6-6,6 10-11 13,8-15 kVRated insulation level : 7,2 kV 12 kV 17,5 kVRated secondary voltage Us: 100 - 110 VFrequency 50 or 60 HzRated voltage factor: 1,2 continuousThermal burden: 300 VA

Table of options:

TYPE VRC1/S1 F VRC1/S2 FN° of secondaries for VT 1 2

Measure 1st MeasureApplication or or Protection

Protection 2nd Protection100 100 - 100

Secondary voltage or or

110 110 - 110

Output ---------- Simultaneous

2nd Class ---------- 0,5 or 1 0,5 or 1

secondary Output ---------- 15 25 30 50 100

1st Class 0,2 0,5 0,2 0,5

secondary Output 25 50 50 75 100 15 25 30 50 100

pag. 42/45H 105439

pag. 43/45


Type VRC2/S1 FPanels type SM6 ( CM2, DM2, GBC, GBCA )

Description


Dimensions


Characteristics

Standard reference IEC 186Rated voltage factor: 1,2 continuousThermal burden: 500 VA


Rated ou tpu t RatedReference Ratio and accuracy insulat ion F r e q u e n c y

n u m b e r class level

3731905 10000 / 100 50 VA c l 0,5 12 kV 50 and 60 Hz

3731904 15000 / 100 50 VA c l 0,5 17.5 kV 50 and 60 Hz

3731435 20000 / 100 50 VA c l 0,5 24 kV 50 and 60 Hz



Type VRC2/S1 F - VRC2/S2 FPanels type SM6 ( CM2, DM2, GBC-A, GBC-B )

Description


Dimensions


Characteristics

Standard reference IEC 186Standard primary voltage Up: 3-3,3-5-5,5-6-6,6 10-11 13,8-15 20-22 kVRated insulation level : 7,2 kV 12 kV 17,5 kV 24 kVRated secondary voltage Us: 100 - 110 VFrequency 50 or 60 HzRated voltage factor: 1,2 continuousThermal burden: 500 VA

Table of options:

TYPE VRC2/S1 F VRC2/S2 FN° of secondaries for VT 1 2

Measure 1st MeasureApplication or or Protection

Protection 2nd Protection100 100 - 100

Secondary voltage or or

110 110 - 110

Output ---------- Simultaneous

2nd Class ---------- 0,5 or 1 0,5 or 1

secondary Output ---------- 25 50 30 50 100

1st Class 0,2 0,5 0,2 0,5

secondary Output 50 75 75 100 120 25 50 30 50 100

pag. 45/45H 103001

magrini - instrument transformers for sm6

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