 LRGBJ Series
Specifications and Performance
- Rated primary voltage: up to 550KV
- Rated primary current: 5-2500A (for very low ratios please see our specific series)
- 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 (see our High Current ZHD series for higher currents) |
Ambient Temperature |
+45 ° C (113 ° F) to –50 ° C (-58 ° F) |
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-60044-1 ”Current Transformers” and IEEE C57.13 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: A simple monitoring feature of tanδ is proposed as an option for yearly monitoring of 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 Current Transformers for most voltages or operating conditions met in T&D grids around the world.
Please contact us for special needs.
Model and
Specification |
Highest
voltage for
equipment
(kV) |
Rated Current
(A) |
Height L
(mm) |
Creepage
Distance
(mm) |
Weight
(kg/lb) |
LRGBJ - 40.5 / 1000 |
40.5 |
800~1000 |
1015 |
1015 |
90/198 |
LRGBJ - 40.5 / 2500 |
40.5 |
2000~2500 |
1060 |
1015 |
90/198 |
LRGBJ - 126 / 1200 |
126 |
1200 |
1785 |
3200 |
240/529 |
LRGBJ - 126 / 2500 |
126 |
2000~2500 |
1830 |
3200 |
240/529 |
LRGBJ - 252 / 1200 |
252 |
1200 |
2670 |
6300 |
440/970 |
LRGBJ - 252 / 2500 |
252 |
2000~2500 |
2740 |
6300 |
440/970 |
LRGBJ - 550 / 2500 TPY |
550 |
2500 |
5850 |
13750 |
3000/6614 |
More Information
To view our technical papers, click here:
|
