Emerson ADTS manual Design 150-600 amp, Design 800-1200 amp

INSTALLATION (continued)

J–design 150–600 amp

left side of

transfer switch

maintenance

handle

Emergency source contact shaft hub

clip

Normal source

contact shaft hub

H–design 800–1200 amp

left side of

transfer switch

lobes on weights

prevent both

N & E contacts

from being

closed at the

same time

Emergency source contact shaft hub

maintenance

handle

clips

Normal source

contact shaft hub

Figure 1-6. Maintenance handle on 150–600 amp. J–design transfer switches. Hubs shown with Normal contacts closed & Emergency open.

Figure 1-9. Maintenance handle on 800–1200 amp.

H–design transfer switches. Hubs shown with Normal contacts closed & Emergency open.

	UP opens the
handle	Emergency source
	contacts
hub	UPPER SHAFT
	DOWN closes the
	Emergency source
frame	contacts

Figure 1-7. Emergency (upper shaft) operation on 150–600 amp. J–design transfer switches.

handle	UP opens the
	Emergency source
	contacts
hub	UPPER SHAFT
	DOWN closes the
	Emergency source
frame	contacts

Figure 1-10. Emergency (upper shaft) operation on 800–1200 amp. H–design transfer switches.

UP closes the

handleNormal source contacts

LOWER SHAFT

hub

DOWN opens the Normal source

frame contacts

Figure 1-8. Normal (lower shaft) operation on 150–600 amp. J–design transfer switches..

handle	UP closes the
	Normal source
	contacts
hub	LOWER SHAFT
	DOWN opens the
	Normal source
frame	contacts

Figure 1-11. Normal (lower shaft) operation on 800–1200 amp. H–design transfer switches..

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