American Power Conversion DC Series user manual Front access connection

4.1.4.2Front access connection

To connect the input supply to the MX06 40A Shelf proceed as follows:

•The AC input current to the system should also be limited by an appropriate device in the event of a short circuit as defined in EN60950 to protect the internal wiring of the end use equipment. The device(s) should be rated accordingly.

•Ensure that the AC supply intended for connection is isolated, locked off and under single operator control.

•The main circuit board should have been factory configured for 3-phase delta prior to sale. LK2 and LK4 should have been fitted but LK1 and LK3 should be removed. Also an external link should connect AC2 to AC5. This is normally factory configured.

•Strip the ends of the AC Input cables to be connected to the Input terminal block.

•By unscrewing the 2 front panel screws the AC Input connection draw can be opened as shown below. The AC Input cable is fed through the gland and screwed into the terminal block visible.

• Connect as follows:	Safety earth to position marked with earth symbol (connect first)
	Phase 1 to AC1
	Phase 2 to AC2
	Phase 3 to AC4

Terminal Block

Cable Gland

•The alarm card adjacent to the AC Input drawer may need to be removed for easier access to the terminal block screws

•Refer to section 5 entitled “Commissioning the system” before applying AC power.

User Manual 990-9178A	Page 31 of 44	18th FEB 02
DC MX06 40A Shelf