Datasheet

User Manual 990-9189A
DC MX06 60A Shelf Page 22 of 30 18
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FEB 02
4.1.4 3 Phase Delta Supply
Warning!
The DC MX06 60A 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 per phase on a 208Vac supply is 12.5A. Choose AC Input cabling
rated accordingly. The cabling should be colour coded as required for the country/state
concerned.
To connect the input supply to the DC MX06 60A Shelf proceed as follows:
• The AC input current to the system should 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.
• 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, LK3, LK4 and LK5 should be fitted but LK1 and LK6 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 (M4 flange
nut for earth connection) supplied in the accessory kit.
• The cables should exit through one of the top knockout tabs but if an alternative knockout
is to be used ensure additional insulation is used where cabling passes over secondary
parts. Cables should be routed close to the top of the shelf using the supplied routing clips
(see section 4.4 for further details)
• Refer to section 5 entitled “Commissioning the system” before applying AC power.
Top Left
Safety
Earth
AC6
A
C5
A
C3
A
C4
AC2
Safety
Earth
AC1
LK2
LK1
LK3
LK4LK5
LK6