JSM3-485 type digital online monitor for metal oxide surge arresters

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Product Details

Place of Origin	Zhejiang, China		Brand Name	MingNeng
Model Number	JSM3-485

Product Description

Specifications

applied voltage:6~330KV
Standard: IEC60099-4
Certification: ISO9001:2008

1.Introduction

JSM3-485 type digital online monitor for metal oxide surge arresters meets the requirements of IEC and GB standards. The monitor can record the action numbers of surge arresters, and monitor the leakage current of surge arresters online with RS485 communication connector, so the leakage current, action (discharging) numbers, and time can be transferred to the computer of the control center.

2.Key Specialty

JSM3-485 type digital online monitor for metal oxide surge arresters has lower residual voltage metal oxide non-linear resistance block, sensor, electromagnetism counter, milliammeter, A/D convertor, photo-electricity insulating RS485 type connector, and CPU system, which all are sealed in a metal box. The monitor has an observational glass window with 125mm X 125mm dimension, two same external communication connectors.

3.Specification

The specification of JSM3-485 type digital online monitor for metal oxide surge arresters is shown in table 1.

Table 1: Specification of JSM3-485 Type Digital Online Monitor

No.	Requirements	JSM3-485	JSM3C-485
1	Nominal discharge current (kA)	10	20
2	Residual voltage under nominal discharge current(8/20μs) (≤ kV)	1.0	1.0
3	2 ms Rectangular wave current withstand (≥ A)	800	2500
4	4/10μs High current withstand (≥ kA)	100	100
5	Minimum counting current 8/20μs (8/20μs) (A)	50	50
6	Over-current withstand capacity (mA)	100	100
7	Meter range (can be changed) (mA rsm)	3	10
8	Milliammeter precision (≤ %)	5	5
9	Counter digits (cycled)	999/99999	999/99999
10	Terminal voltage under continuous operating voltage (< V)	3	3
11	Communication mode	RS485	RS485
12	Operation voltage (DC V)	24	24
13	Remote measurement error for leakage current (≤ %)	1	1
14	Remote measurement error for discharge No. (≤ %)	0	0
15	Weight (kg)	2.5	3.0

4.Applying Scope

JSM3-485 type digital online monitor for metal oxide surge arresters is used for the surge arresters in 220 kV power system and lower systems.

JSM3C-485 type digital online monitor for metal oxide surge arresters is used for the surge arresters in 500 kV power system and lower systems.

Installation Diagram:

More infomation and photos:

Contact Us

Wenzhou Mingneng Electrical Co., Ltd.: Contact nameleo shi
Chat Now; Phone0086-0577-62712995; Address(Inside Yueqing Qiujing Auto Parts Stamping Factory) Bulao Village, Liushi Town

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JSM3-485 type digital online monitor for metal oxide surge arresters

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