Zjj-4sc 0~1000VDC Bender Relay DC Ground Fault Detection for DC System Use

• Theory: Electromagnetic Relay
• Usage: Insulation Monitor
• Phase: 3
• Electricity Type: Dc
• Number of Pole: 3
• Load: Medium Power Relay
• Model NO.: ZJJ-4SC
• Protective Characteristics: Enclosed Rlay
• Action Principle: Electromagnetic Type
• Size: Miniature
• Type: Electric Parameter Relay
• Testing Voltage: 30 to 500V
• Operating Temperature: 20
• Measuring Range: 500V
• Dimensions: 170X110X150mm
• Accuracy Class: ±3%
• Transport Package: Please Consult for Details
• Specification: 10*10cm
• Trademark: OEM
• Origin: Zhejiang, China
• Production Capacity: 1000 Piece/Pieces Per Month

Product Description

Product Description

The ZJJ-4SC DC insulation relay adopts a fully static circuit with a high-sensitivity grounding resistance monitoring and display circuit, which helps users make a quantitative assessment of the reduction of the insulation degree of the DC bus bar, and monitors the grounding resistance of the positive and negative bus bars online in real-time. When the ground insulation drops to the set value, the relay sends out a warning signal.

The relay adopts a full hardware divider operation circuit to directly display the grounding resistance value, and the alarm threshold value is also directly adjusted and displayed on the panel. ZJJ-4SC adopts guide rail installation, with ultra-small size of 115mmX90mmX40mm, dry contact alarm output. The monitoring voltage value can be as wide as 48-1500v and is not affected by the fluctuation of the measured voltage. It is widely used in DC speed regulating motors, solar power generation, and other fields.

Features

 

* LCD--Positive and negative bus bar grounding resistance values

* Alarm resistance threshold online display and direct setting;

 

* The short-circuit grounding current is extremely small to ensure safe operation;
 

* Wide monitoring voltage, 48-1500V, working voltage 24-220V can be customized;
 

* Terminals are pluggable for easy maintenance and replacement
 

* Guide rail structure, reinforced shell, modular structure, high reliability.
 

 

 

Specification

Input voltage	DC220V
Operating voltage range	100~350V
Resistance range	0~1999KΩ
Short circuit ground current	Max 0.6mA
Accuracy	5%
Alarm setting range	0~999KΩ
Return coefficient	95%~98% @ Rs=50KΩ
Output contact capacity	DC 220V 0.2A
		AC 250V 2A
Power supply	7~10mA
Operating temperature	-40~70
Dimensions	115mm x 90mm x 40mm

Please consult for details

Application

* DC speed regulating motor
* Solar power generation and other fields
* DC or AC/DC main circuits
* UPS systems, battery systems.
* IT systems with high leakage capacitances
* DC charging stations for electric vehicles.
 

 

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