APC DCM00K02W483 Datasheet download pdf (Page 30)

User Manual 990-9178A

DC MX06 40A Shelf Page 30 of 44 18

FEB 02

4.1.4 3 Phase Delta Supply

Warning!

The MX06 40A Shelf can only be used on a 208Vac phase to phase supply.

In a delta connection system each rectifier input is connected directly across two phases. Due to

the maximum voltage rating of the rectifiers being 264Vac this is the maximum phase-to-phase

voltage that can be applied.

The maximum input current on a 208Vac supply is 9.5A per phase. Choose AC Input cabling

rated accordingly. The cabling should be colour coded as required for the country/state

concerned.

4.1.4.1 Rear 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. Remove the rear cover to leave the view as shown below.

• The main circuit board should have been factory configured for 3-phase delta prior to sale.

LK2 and LK4 should be fitted but LK1 and LK3 should be removed. Also an external link

should connect AC2 to AC5. This is normally factory configured.

• Connect as follows: Safety earth to either earth stud (connect first)

Phase 1 to AC1, Phase 2 to AC5, Phase 3 to AC4

• Connect the cables terminated with M4 ring crimps using the M4 x 8 screws supplied in the

accessory kit.

• Cables should exit through the top left knockout tab. If an alternative knockout is to be used

ensure additional insulation is used where cabling passes over secondary parts. Cables

should be routed as close to the top of the shelf using the supplied routing clips (see section

4.3 for further routing details.

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

AC6

Safety

Earth

Phase 2

AC5

AC3

Phase 3

AC2

Safety

Phase 1

AC1

LK4

LK3

LK2

LK1

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