Ground Resistance Signaling Module

With the new ground resistance signaling module, in the grounded operating mode, WAGO offers not only detection of 0 V grounding, but also fully automatic detection of resistance values below a non-adjustable, unbalanced insulation resistance between ground and +24 V or 0 V of the supply voltage.

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Benefits of the Ground Resistance Signaling Module

In the video, Frank Sellke describes the benefits the ground resistance signaling module offers you for preventive maintenance.

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Benefits of the Ground Resistance Signaling Module
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Practical Use of the Alarm Signal
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Quick and Easy Troubleshooting in the Event of a Ground Fault
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WAGO Ground Resistance Signaling Module

Properties

Clear Signaling

Operating Mode Selection

Convenient Connection Technology

Automated Evaluation

The Evolution of the Ground Resistance Signaling Module

Single Wire

Immediate fuse tripping in the event of a ground fault
Immediate system shutdown
No pre-warning

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Ground Conductor Disconnect Terminal Block – Manual Insulation Resistance Test

Immediate fuse tripping in the event of a ground fault
Immediate system shutdown
Detection of potential ground faults through routine manual maintenance

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Ground Resistance Signaling Module – Automatic Insulation Resistance Testing

The ground resistance signaling module offers the industry’s best cost–benefit ratio and is easy to use. Replacement of the previous ground conductor disconnect terminal block is straightforward. Only two additional wires have to be connected to the PLC to make the potential-free contact ready for evaluation.

Advantages of the Ground Resistance Signaling Module over the Mechanical Ground Conductor Disconnect Terminal Block – in Practice

Manual testing for emerging ground faults replaced by fully automated monitoring
Reduction of the inspection interval from approx. 3 months to 10 seconds
Immediate further signaling by potential-free contact for signaling to PLC

Example Applications

Upgrading from a ground conductor disconnect terminal block to a ground resistance signaling module: Wherever a ground conductor disconnect terminal is currently in use, a ground resistance signaling module can easily be retrofitted for fully automated monitoring.

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Two 24 VDC power supplies require only one ground resistance signaling module: Even with two or more power supply units connected in parallel, one ground resistance signaling module suffices for ground-fault monitoring.