Vanguard DigiTMR - Manual (Page 22)

DIGITMR USER’S MANUAL REV 3
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3.1.5. AC Current Sensor Connection
The DigiTMR can sense a breaker’s bushing current by using a clamp-on AC current sensor
connected to the breaker’s bushing CT. The AC current sensor is used in Quick-Shot Mode only.
The AC current sensor requires a minimum of 100 mA to operate. The maximum current is 25
Amperes. A typical AC sensor connection is shown in Figure 8.
Figure 8. Typical CT Connection