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
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”
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:
|Rated transformation ratio|
|Number of secondary windings|
|Accuracy limit factor|
|Instrument security factor|
(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|
|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|
To view our brochure, click here.