Installing the phase sensors, Ak-50 & aks-50 breakers, Parts provided for ct installation per pole – GE Industrial Solutions ProTrip Conversion Kits AK-50, AKU-50, AKS-50, AKT-50, AK-75, and AK-100 User Manual

Page 13: Ct post mounted in the breaker back frame

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AK-75 & AK-100 Breakers

1. The ProTrip phase sensors mount on the upper

breaker studs, as shown in Figure 21. The sensors
held on the stud with locking rings. Leave enough of
the stud exposed for the primary fingers to engage.
Engage the sensor’s antiturn lugs with the notch in
the locking ring. Before tightening the locking rings,
position each sensor so that its leads exit between
the pole bases, as shown.

2. Mount the three sensor terminal boards to the rear of

the back frame using the hardware provided.

3. Form each sensor’s leads downward between the

pole bases. (See also Figure 28.)

Figure 21. Phase sensor installation on AK-75 & AK-100 breakers.

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