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Hall effect principle based Current Transducer, specifically made to work in extreme atmosphere of traction application. Its measuring secondary circuit is galvanically isolated with primary circuit.
HOTEL LOAD CURRENT SENSOR
for Electric Locomotives
Technical Features
- Very compact & light weight than conventional CT & Shunt
- Can measure DC, AC and impulse/surge current
- Measuring range of the current 0 to ±3000 Amp
- Conversion ratio of primary and secondary is 1 : 5000
- Conversion ratio of primary and test circuit is 1 : 1000
- Measuring accuracy better than ±0.25 %
- Linearity is better than ±0.1%
- Zero offset current within ±0.75mA
- Measurement response time is better than 1μs
- Operating bandwidth 0 to 100Khz (-1db)
- Dielectric Isolation of primary & secondary 9KVAC
- Operating temperature -40ºC to +70ºC
Applications
To measure the current (DC, AC and pulsating upto 100Khz) accurately in high power circuit of 3Phase, 6000HP class of Locomotives for 25KVAC, 50Hz system. It measures the current of Hotel Load Supply.
Technical Specifications
|
Nominal Primary Current |
2000A rms |
|
Nominal output current |
400mA rms |
|
Measuring range |
0 to ±3000 Amp. |
|
Conversion ratio of primary |
1 : 5000. |
|
& secondary |
|
|
Input Power supply Voltage |
+ 15VDC to + 24VDC and -15VDC to -24VDC |
|
Measurement accuracy |
± 0.25% of Input current |
|
Linearity in measurement |
Better than ±0.1% |
|
Zero Offset current |
Max. ±0.75mA |
|
Response time |
Better than 1us |
|
Bandwidth |
0 - 100Khz (-1db) |
|
Di/Dt response |
Better than 50A / µs |
|
Current consumption |
30mA (±24V) + out put current |
|
Dielectric Isolation Primary |
9.0 KV AC 50Hz |