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Arrester online monitoring system

1. Product Overview JCQ3A-485AC remote transmission arrester online monitor adopts precision cast aluminum casing, which increases the mechanical strength and sealing performance of the monitor casing. The installation dimensions are the same as those of the original monitor. The function of the original ordinary monitor is completely retained. A/D conversion based on single-chip microcomputer is installed in the monitor, and the photoelectric isolation RS485 remote transmission board is adopted. The remote transmission terminal is led out from the monitor, and the remote transmission mode and the remote transmission protocol are also the same. The power supply mode is AC 18V in-phase AC voltage, which is also used as the reference voltage phase for the arrester resistive current test.

Category: Product Center

Key words: equipment


Product Description

1. Product Overview
JCQ3A-485AC remote transmission arrester online monitor adopts precision cast aluminum casing, which increases the mechanical strength and sealing performance of the monitor casing. The installation dimensions are the same as those of the original monitor. The function of the original ordinary monitor is completely retained. A/D conversion based on single-chip microcomputer is installed in the monitor, and the photoelectric isolation RS485 remote transmission board is adopted. The remote transmission terminal is led out from the monitor, and the remote transmission mode and the remote transmission protocol are also the same. The power supply mode is AC 18V in-phase AC voltage, which is also used as the reference voltage phase for the arrester resistive current test.
2. Performance characteristics
1. RS485 remote transmission circuit adopts photoelectric isolation technology, with long transmission distance and strong anti-interference ability.
2. One data line can connect multiple monitors, and distinguish the monitor number according to the address code.
The 3.18V AC non-inverting voltage is used as the instrument working power supply, and at the same time, it is used as the reference voltage phase in the resistive current measurement to improve the measurement accuracy of the resistive current.
4. It adopts round precision cast aluminum casing, which has good sealing performance, beautiful appearance, good corrosion resistance and electromagnetic shielding effect.
3. Product application range
JCQ3A-485AC remote transmission arrester online monitor is suitable for various lightning arresters in 220KV and below power systems;
JCQ3B-485AC remote transmission arrester online monitor is suitable for various lightning arresters in power systems of 500KV and below;
If you need a remote transmitter with a higher voltage rating, you need to specify when ordering.
4. Main electrical properties
The electrical performance is as follows:
Project JCQ3A-485AC JCQ3B-485AC
Nominal discharge current (kA) 10 20
Residual pressure at nominal discharge current(kV) ≦1.0 ≦1.0
2ms square wave withstand capability(A) 800 2000
4/10μs high current withstand capability(kA) 100 100
Minimum operating current (8/20μs)(A) 50 50
mA meter full scale (mA rms) 3 6
Count range (recyclable count) 0~999 0~999
Continuous operation voltage lower terminal voltage (V) <3 <3
Working power supply (V) 18V in-phase AC voltage 18V in-phase AC voltage
RS485 data remote transmission Full current, resistive current discharge times, discharge time Full current, resistive current discharge times, discharge time
Weight (kg) 2.5 3.0