TDK-Lambda Vega 550 Handbuch Seite 17

Vega 550 Handbook
For PSUs with three D modules fitted or two D modules fitted with an E module in slots 4 & 5:
D1L & D1H in slots 2/3 is limited to 42A and in slots 4/5 is limited to 47A
D2 in slots 2/3 is limited to 40A
Adjusting output voltage beyond the stated range may cause overvoltage protection (OVP) to operate, whereby all
outputs will turn off. To reset OVP turn back output voltage adjustment and remove the mains supply for 30 seconds,
and then swich back on.
All the above ratings and limitations apply to the individual modules from which a series or paralleled pair is made.
SELV and Outputs Connected In Series:
Outputs are SELV except as described below:
Non-earthed outputs that have secondaries with 2 or more turns are non-SELV as a single fault in the secondary
may make them exceed the SELV limit between output and earth.
Non-earthed outputs that are connected in series are non-SELV unless all the seriesed outputs use 1 turn
secondaries and there are no more than 3 outputs connected in series.
Outputs connected in series are non-SELV if the total output voltage + 20% of the max. rated output voltage of
the output with the highest rated voltage exceeds 60Vdc (the 20% addition allows for a single fault in any one
individual channel).
The total voltage of a seriesed output must not exceed 160Vdc.
If any output or seriesed output is non-SELV then all the outputs in the PSU must be considered non-SELV.
Non-SELV outputs must be guarded or a deflector fitted during installation to avoid a service engineer making
inadvertent contact with the output terminals, or dropping a tool onto them.
All outputs have operational spacings to earth, and due consideration must be given to this in the end product
design.
Cooling Options:
Cooling Option
F & D
(Standard or Ruggedized
Fan – Forward Airflow)
Input Voltage (Vrms)
85
90
100
110 – 149.9
150 - 264
Input Connections:
Input screw teminals – 6-32 screws with 8.25mm spacing between screw head centres. Screw head
diameter is 6.6mm
Output Connections:
Ratings:
Single slot, output modules (B, C, L): Two 6.35mm fast-ons per output each rated at 18A or M4 screw
terminals rated at 35A.
Single slot, twin output module (H): One 6.35mm fast-on per output rated at 18A or M3 screw terminals rated
at 15A.
Dual slot, single output modules (D, E): Two 9.5mm fast-ons per output each rated at 32A or M5 screw
terminals rated at 90A.
Maximum Torque Settings for Output Screw Terminals: M3 – 0.5 – 0.6Nm
Max Dual Width
Ambient Modules
(° C) Fitted
No
50
Yes
Max Output Power (W)
425
450
500
550
560
M4 – 1.1 – 1.3Nm
M5 – 2.4 – 2.6Nm
Page 17 of 25
Max Max AT
Power (W) (total)
See table
180
below
See table
180
below
Module
Current
AT Limit
Rating (All
Modules)
n/a 100%
180 100%
17157 issue 17, June 2016