EPO in Single Systems

Connect the EPO cable using one of the following four wiring configurations.

Note: Use only 1-1½ mm² copper wire for the connection of the Emergency Power Off (EPO) and other optional equipment.

Note: The UPS must be connected to either a dry contact or a 24 VDC EPO (Emergency Power Off) switch.

Note: The external EPO +24 VDC, 1500 mA circuit can be supplied through other vendors.

1. Dry Contacts Normally Open: EPO is activated when pin 1 is connected to pins 3 and 5. Connections: 2-4-6,3-5, and 1 (Normally Open).

2. +24 V Normally Open: EPO is activated when an isolated SELV 24 VDC voltage is supplied on pin 1 with reference to pin 2. Connections: 3-5 and 4-6.

3. Dry Contacts Normally Closed: EPO is activated when a connection from pin 3 to 5 is opened. Connections: 4-6.

4. +24 V Normally Closed: EPO is activated when a SELV 24 VDC voltage is removed from pin 3 with reference to pin 4.

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MGE™ Galaxy™ 3500 10-30 kVA 208/220 V Single and Parallel Installation 990-1957C-001