On-line monitoring system for transformer core/clamp grounding
The JC-OM201 transformer core/clamp grounding online monitoring system consists of the JC-OM201 transformer core/clip grounding monitoring device and the JC-8000 integrated intelligent online monitoring device.
Zero-flux current transformer: The secondary side of the transformer has dual windings, and the transformers with a large range and a small range are automatically selected according to the size of the current. At the same time, it cooperates with the amplification factor of the signal amplifier circuit to achieve high-precision measurement in a wide range;
JC-OM201/TR: Convert the iron core ground current signal into a digital quantity on the spot, and adopt signal processing technology to ensure stable measurement accuracy within the frequency range of 45Hz-50Hz. The collection terminal has the on-site temperature and humidity measurement function. The temperature and humidity data of the scene are provided for the operators. The device has passed the tests of high and low temperature, damp heat and electromagnetic compatibility, and has strong environmental adaptability.
JC-9000: Realize the functions of information modeling and communication, communication and alarm parameter setting.
Monitoring volume Accuracy of monitoring range
Leakage current 0～10000mA ±0.5% or ±0.1mA
Working power supply AC220V ±20%
Communication mode CAN, RS485, GPRS (optional)
System frequency 46～60 ±0.01
Sampling period ≤5 (can be set)
System design service life 20 years