ABB Type CM Phase Balance Current Relay Specifications and User Guide
Summary
This comprehensive guide details the ABB cM phase Balance current relay, a critical component for monitoring electrical load balance in multi-phase power systems. The manual serves as a deep resource for professional electricians and automation engineers. It provides detailed instructions on installation—including mounting techniques to switchboard panels and correct grounding procedures—and guides users through optimal setup of trip circuits and indicator switches (AC/DC). Essential coverage areas include wiring diagrams, adjusting pickup settings, and guidelines for maintenance and spare parts management, ensuring reliable monitoring across complex substation automation environments.
Page Summary Contents For ABB Type CM Phase Balance Current Relay Specifications and User Guide
Manual Details
| Brand | Balance |
|---|---|
| Pages | 12 |
| File Size | 1.06 MB |
| Published | May 16, 2026 |
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Frequently Asked Questions
Where should the relay be installed?
Mount it on switchboard panels in a location free from dirt, moisture, excessive vibration, and heat.
How do I physically mount or ground the relay?
Use the rear mounting stud or the four flange holes. Grounding can be achieved via the studs/screws or by connecting ground wires to them.
What dictates the trip circuit closure current when using ACS units?
The moving contact must close with sufficient AC current, which should not exceed the rated operating current of the particular ACS being used.
Can this relay be used for continuous industrial loads?
Yes. The relay may be utilized for continuous load currents from 1 to 7 amperes (for the non-tapped type).
What information is required when ordering renewal parts?
When placing an order, always provide the complete Nameplate data.