Zhengzhou Great Electric Co.,Ltd.
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Standard Current Transformer HLB-32G series
Technical Parameter
| Primary | |
| Wound primary winding | 5….100A or 5….480A, 50/60HZ (more option available) |
| Applied primary | Applied primary: 100….3200A (1…10, maximum 12 turns) or 480A-3200A (1-2 turns) (more option available) |
| Rated Secondary | 1A (model No.HLB-32G/1), 5A (model No.HLB-32G/5) Or 1A&5A combined (model No.HLB-32G/1-5) |
| Test Primary | A 2000 ampere-turn winding provided for self test of CT |
| Accuracy | 0.005%(or 0.002% as option) |
| Duty cycle | Continuous upto 3200A, and 30 minutes or more at 4000A |
| Secondary winding design | 8Taps at 0, 100, 200, 1500, 1600, 2000, 2500, 3200 amperes to turns |
| Ratios available with customer applied primary winding | 100, 120, 125, 130, 140, 150, 160, 175, 180, 200, 225, 240, 250, 260, 280, 300, 320, 325, 350, 360, 375, 400, 450, 480, 500, 600, 625, 640, 650, 700, 750, 800, 900, 1000, 1200, 1250,1300, 1400, 1500, 1600, 1800, 2000, 2400, 2500, 3000, 3200A |
| Ratio available with pre-wound primary winding | 100, 90, 80, 75, 70, 65, 62.5, 60, 50, 45, 40, 37.5, 35, 32.5, 31.25,30,25, 24, 20, 18, 16, 15, 14,13,12.5, 12, 10, 9, 8, 7.5, 7, 6.5, 6.25, 6, 5, 4.5, 4, 3.75, 3.5, 3.25, 3.125, 3, 2.5 |
| Rated secondary burden | 5VA (model No.HLB-32G/5) 0.2VA (model No.HLB-32G/1) 5VA at I2 = 5A, Burden is 0.2VA at I2 = 1A (model No.HLB-32G/1-5) |
| Power factor | COSΦ=1.0 |
| Operating range | (1%-120%)In |
| Frequency | 50/60HZ |
| Voltage level | AC 600V |
| Withstand voltage | 2000V 1min |
| Insulating medium | air |
| Dimension of feed through hole | Φ140mm
|
| Size | Smaller one: Approx 590mm*400mm*240mm (design with applied primary 1-10, maximum 12 turns) Bigger one: Approx 590mm*400mm*600mm (design with applied primary 1-2 turns) |
| Weight | approx 50kgs |
| Accessories | 3.5meters length secondary cable with connectors |
Designs for optional
Features
1) More ratios to ensure good accuracy
2) 5 to 3200A current transformer design
3) Used for precision measurement of AC current or calibration of instrument current transformer
4) Can be installed on a bus bar can be used with a primary conductor consisting of turn numbers
5) Designed with a tapped primary & secondary windings to ensure a large number of ratios over
a range 5 to 3200A (or more as option)
6) Adopting “two stage principles” to ensure excellent accuracy and also allow to run long leads between
CT and load but not degrading CT accuracy.
7) Adopting advanced design technology to ensure that it can be used in severe magnetic environment
and also not affected by position of primary conductor in the hole or in the location of return conductor
8) With facility to test the performance of CT and verify its own accuracy.
9) CT ratio selection switch is optional and if customer need, it can be provided by adjust the design structure,
then can select mentioned CT ratios but no need changing secondary.
Note:
1) Also can offer standard current transformer integrated with source (3200A CT with 4000A & 8.8KVA source;
2000A CT with 2400A & 8.8KVA source)
2) Photo design mentioned in the brochure is as a reference, final design possibly will have change after
customer inform special & optional requirements.
3) If choosing bigger one design, customer can reduce a lot of time when applying turns.
