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