LRGBJ Series – up to 550kV
Specifications and Performance
- Rated primary voltage: up to 550kV
- Rated primary current: 5-2500A
- Rated secondary current: 5A, 1A
- Rated output 10-50VA
- Metering accuracy class: 0.2S, 0.2, 0.5S and 0.5 class
- Accuracy limit factor 5,10, 15, 20, 30, 40
- Protection accuracy class: 5P, 10P and TPY (additional classes on demand)
- Secondary cores: 1-8
LRGBJ series Current Transformers
| Accuracy Class | 0.2S, 0.2, 0.5S, 0.5 or 5P, 10P, TPY (for more specific need, please contact us) |
| Rated Current | 5~2500 A (For higher currents see our ZHD series. For very low ratios see our specific series under shunt capacitor bank applications) |
| Ambient Temperature | -50 C to *45 C |
| Insulation Level (kV) | 550 kV rated :680/1175/1550 252 kV rated: 460/1050/1200 126 kV rated: 230/550/630 |
| Partial Discharge Level | <5 pC 550 kV rated: <10 pC |
Standards
All products comply with IEC-61869-2, IEEE C57.13 and CAN/CSA-C61869-2 standards. Protective class current transformers comply with IEC-60044 - 6: 1992 "Requirements for Protective Current Transformers for Transient Performance"
Maintenance
No maintenance is needed for our Current Transformers.
Option: Built-in insulation condition monitoring is offered as an option for continuous online monitoring of the equipment.
Reminder: for electrical safety reasons, secondary circuits should not be opened during operation of any Current Transformer.
Inquiry Check List
When placing an order, customer's specification needs to include:
| Reference Standard |
| Rated voltage |
| Rated current |
| Rated frequency |
| Rated transformation ratio |
| Number of secondary windings |
| Rated output |
| Accuracy class(es) |
| Accuracy limit factor |
| Instrument security factor |
| Environmental Conditions (Altitude, Pollution Class) |
If users have specific requirements, custom designs can be jointly defined in advance and products will be designed according to customer's specification.
Dimensions - for further details please see the specification sheet in Downloads
The following dimensions represent typical LRGBJ Current Transformers. However, we custom design for most voltages or operating conditions encountered on T&D grids around the world.
Please contact us for special needs.
| Model and Specification | Highest voltage for equipment (kV) |
Rated Current (A) |
W (mm) |
D (mm) |
L (mm) |
Creepage Distance (mm) |
Weight (kg/lb) |
| LRGBJ – 40.5 / 1000 | 40.5 | 800~1000 | 686 | 370 | 1015 | 1015 | 90/198 |
| LRGBJ – 40.5 / 2500 | 40.5 | 2000~2500 | 686 | 370 | 1060 | 1015 | 90/198 |
| LRGBJ – 126 / 1200 | 126 | 1200 | 750 | 385 | 1785 | 3200 | 240/529 |
| LRGBJ – 126 / 2500 | 126 | 2000~2500 | 750 | 385 | 1830 | 3200 | 240/529 |
| LRGBJ – 252 / 1200 | 252 | 1200 | 1052 | 552 | 2670 | 6300 | 440/970 |
| LRGBJ – 252 / 2500 | 252 | 2000~2500 | 1052 | 552 | 2740 | 6300 | 440/970 |
| LRGBJ – 550 / 2500 TPY | 550 | 2500 | 1520 | 855 | 5850 | 13750 | 3000/6614 |
Download RHM_Current-Transformers_HV-DryShield
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