On line monitoring system of cable partial discharge
1、 Demand analysis
With the progress of science and technology, the proportion of cable lines in cities is also increasing, and the insulation materials in cable lines may have air gaps, harmful impurities, etc. due to materials or processing technology problems, which may cause cable line failures. In order to ensure the long-term operation of the cable line, the cable partial discharge online monitoring system is required to monitor the partial discharge of the cable in real time and give early warning to the fault in the cable line in time, so as to protect the safe operation of the cable.
2、 Working principle
The device has strong anti-interference capability and strong electromagnetic compatibility. It is equipped with antenna gating to continuously interfere with signals and maintain accurate monitoring data. The device can operate independently, record the cable data separately, and use the acquired computer to manage multiple devices through data connection. The device can provide a variety of different alarm modes and has powerful background management software. It has a large amount of data storage and can be moved for backup at any time.
3、 Technical parameters
project | parameter |
Installation method | Front panel installation and embedded opening required |
working voltage | AC 220V 50Hz |
Communication mode | RS485/433MHz |
Interface | USB-B/RJ45Ethernet |
Rated measuring range | 0~1000pC |
Coupling capacitance | 3PF-150PF Depends on design |
Applicable voltage level | 5kV~36kV Depends on design |
Live indication | LCD |
Relay contact | 5A/250V AC 5A/30V DC |
Power Supply | 230V AC±10% |
power waste | 3W |
Degree of protection | IP54 |
working temperature | -40℃~70℃ |
Operating humidity | <95%RH |
Altitude | <4000m |
Front panel opening size | long x wide=92mmx44mm |
Overall dimensions | long x widex deep=96.6mmx48.6mmx98.3mm |