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Lt Current Transformers

(1.3)
Supplier From India
Apr-08-13

VoltageBurdenRange
1-ph.Tape wound & resin cast Upto 1100 v Prim:1 a to 10000 a; sec: 5 or 1a
Bar primary ctsMetering & 2.5 va to 30 vaCl. 0.2/0.5/1.0/3.0/5.0
Protective2.5 va to 30 vaCl. 5p3/5p5/5p10/5p15/5p20
ProtectiveVk & rct reqd.Cl.Ps

3-ph.Tape wound & resin cast Upto 1100 v Prim: 200 a to 5000 a; sec: 5 or 1a
Bar primary cts Metering & 2.5 va to 30 vaCl. 0.2/0.5/1.0/3.0/5.0
Protective2.5 va to 30 vaCl. 5p3/5p5/5p10/5p15/5p20
ProtectiveVk & rct reqd.Cl.Ps

1-ph.Tape wound & resin cast Upto 1100 v2.5 va to 15 vaPrim:1 a to 150 a; sec: 5 or 1a
Wound primary cts Metering & Cl. 0.5 / 1.0 / 3.0
Protective Cl. 5p10

3-ph.Resin cast Upto 1100 v2.5 va to 5 vaPrim:50 a to 100 a; sec: 5 or 1a
Wound primary cts Metering Cl. 0.5 / 1.0

1-ph.Resin cast Upto 1100 vSuitable for cablesSuitable for relays
Core balance ctsProtectiveUpto 33 kvOf all makes

1-ph.Special cts Upto 1100 v Tape wound & resin cast
Interposing & summation cts

1-ph.Resin cast cts Upto 6.6 / 11kv5.0 va to 15 vaPrimary : 1 to 3000 ampers
Metering & Sec: 1, 5 and some special required ampers.
Protective Cl. 0.2/0.5/1.0
Cl. 5p3/5p5/5p10/5p15/5p20
Cl.Ps


As per mutual discussion

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1. Temperature:

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3. Rated Primary Current:5-5000A 5A,1A

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5 Accuracy Class 0.05S

6. Allow long-term work under the rated current; More than120A across the core.



Precautions:

1. The current of standard CT and tested CT must be the same in CT calibration.

2. Follow the given wiring diagram strictly.

3. Test whether the load box is accurate or not before calibrating the transformer.

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Short out the secondary winding before cutting off the power when the demagnetization is finished.

6.Principle wiring diagram of CT with large current generator is similar to above diagram. They are the same except the output winding of large current generator and primary winding of transformer are the same one.
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