Garmin EDP70 manual Contactor 24/36kVA Ratings

Reserve Supply

AC Supply

S3 Maintenance By-pass

S2
S1	S4
Battery	24/36kVA Ratings
Contactor

S3

Reserve Supply S2

S1

AC Supply

Maintenance By-pass

S5 480Y/277V

S4

208Y/120V

Battery

Contactor 50/80kVA Ratings

Figure 5 – Re-establishing the Utility Supply

When the utility supply returns within acceptable limits, the UPS returns automatically to normal operation mode as previously described. The rectifier now starts to recharge the battery. However, until recharge has been completed, any further mains failure will result in reduced standby times.

S3

Reserve Supply S2

S1

AC Supply

Maintenance By-pass

S4

Battery

Contactor 24/36kVA Ratings

	S3
Reserve Supply	S2
	S1
AC Supply

	Maintenance By-pass
	S5
	480Y/277V
	S4
	208Y/120V
Battery	50/80kVA Ratings
Contactor

Figure 6 – Transferring the Load onto the Reserve Supply

Transfer onto the reserve line is caused by two conditions:

a)inverter stop

b)overload

In both instances the load is transferred onto the reserve without interruption. If the overload is temporary, the system will re-transfer from reserve to inverter as soon as the it ceases. This allows for the initial start-up of loads with high or excessive switch-on currents.

MI00/10056 rev. 8 — 05/2006-- page 13