JY1000-ST Insulation Monitoring Relay

JY1000-ST is a DC insulation monitoring device based on MODBUS protocol, including DC to ground insulation impedance monitoring, DC voltage monitoring, DC voltage reverse connection alarm, ground wire disconnection detection function and other safety monitoring functions. It can be used for electric vehicle DC charging system, photovoltaic system, energy storage system, DC grid 100V~1000V.

JY1000-ST has the function of starting and stopping insulation monitoring. After insulation monitoring is started, the insulation resistance of positive and negative poles to ground can be monitored in real time. The monitoring result is not affected by DC voltage fluctuation, and is not affected by the symmetry of insulation resistance of positive and negative poles, external self-suspension grounding line disconnection line function.

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FEATURES

  • Monitor the insulation resistance value:100~1000VDC;
  • Insulation resistance measurement range 0KΩ~10MΩ;
  • Detect DC voltage value, range 100 ~ 1000 VDC;
  • RS485 communication, MODBUS RTU communication;
  • DC voltage reverse connection alarm function;
  • External self-test of insulation monitoring module;
  • Ground line disconnection detection;
  • Two types of work models available: Automatically switching battery model (Non-equilibrium battery method, using the local power supply system); Fixed power network model (balanced battery method, using the local power supply system).

 

APPLICATIONS

  • Photovoltaic system;
  • DC systems such as DC grids;
  • Electric vehicle DC charging system;
  • Energy storage system.

Specification

Parameter Value
Power supply 10-30VDC, Power 3w
DC voltage range 100V~1000V
DC voltage

measurement accuracy

 ≤2V+0.5%
Insulation resistance

measurement range

 1KΩ~10MΩ

(DC System voltage:100V~1000V)
Insulation monitoring accuracy

((When :DC voltage:100V-1000V)

 CY range Resistance range Accuracy
0~0.8μF ≤60kΩ ≤3kΩ
60kΩ<R≤1MΩ ≤5%
0.8μF ~3μF ≤60kΩ ≤6kΩ
60kΩ<R≤1MΩ ≤20%
Insulation monitoring function switching times 50*105 times
Self-test circuit switch frequency ≤1×105
Insulation resistance value

update time after turning on

 After insulation monitoring is turned on, the time until the effective resistance value can be read for the first time 0.7s~2s
Insulation resistance value

update time

 Switch the insulation resistance until the module can read the switched insulation resistance value. 0.5s~3s
Off-line pressure test <2mA
Standard IEC 61851-23 (2014-03):2014-11
Humidity 85%
Storage temperature – 55°C ~90°C
Operating temperature – 40°C ~75°C

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