Vanguard DigiTMR S2 PC User Manual download pdf (Page 19)

REV 1 DIGITMR S2 PC USER’S MANUAL

2.3 DigiTMR S2 PC Cable Connections

2.3.1. Contact Cable Connections

A typical contact cable connection to a circuit breaker is shown in Figure 2. Red clips are

connected to phase A, B, and C of the breaker’s bushings. The black clips are connected to the

ground or common side of the bushings. If the common side of the bushing is not grounded,

jumpers should be installed between the bushings.

NOTE

It is advisable to ground one side of the contacts for most testing purposes. If a

breaker is floating or ungrounded, ensure that the contact input channels are

protected against static discharge.

Figure 2. Contact Cable Connections

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Vanguard DigiTMR S2 PC User Manual Page 19