TDK-Lambda Alpha 1500 Mode D'emploi page 16

Alpha 1500 Handbook
6 When using remote sense, the max output voltage will be reduced by 0.5V for L, S, T, Q and R
modules, and by 1.0V for C, D, F, G, J, M, K, N, U Modules.
7 Ampere turns for J module is calculated as AT=(output current + 15A) x 4.
8 For C modules, the maximum output current is 12A for output voltages >12V.
9. 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
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.
Secondary Options:
Option Description
_MG Provides a module good signal with indicates output voltage is within limits.
_PA Forces paralleled modules to share load current. Additionally it also provides the module good signal.
_PP Provides either of the following functions:
a) Reduces module current limit and caters for paralleled modules with busbar linking. For use with modules
providing a max output of up to 16V only; or
b) Identical to _PA except that the module is paralleled at the output of the module with busbar linking.
_IN Provides an external signal which may be used to inhibit the output of the module.
Option Description
_RP Provides remote programming of the module output voltage.
RPA Provides voltage programming of the module output voltage only.
RPB Provides voltage programming of the module output voltage and has an output VA limiting circuit.
RPC Provides an output VA limiting circuit
RPD Provides voltage programming of the module output voltage and has an output VA limiting circuit.
_D Delay option. Provides for a delay in the turn on time of the output.
Note:
The RPA option can only be used on modules with output voltages rated up to 32V.
The RP, RPB, RPC and RPD options can only be used on modules with output voltages rated up to 16V. They are not for use
with a module voltage range of 18-29V or twin output modules.
Custom Models:
Model: CA1500 7C_MF, 24K_D, 16U_D, 18/18H_D, 9/9E_D, 28/20H_D, 28/28H_D (NS-LAM-145)
Input voltage range: 150-264Vac
Outputs: 7V 16A, 24V 15A, 16V 16A, 18V 5A, 18V 5A, 9V 8A, 9V 8A, 28V 5A, 20V 5A, 28V 5A, 28V 5A, (1500W,
260AT total)
Ambient: 50degC max
Orientations: All except psu vertical with airflow downwards and psu upside down.
Model: CA1500 8.5C, 36J_D, 12C_D, 24D_D, 18.5D_D, 18.5N_D, 30/18H_D (NS-LAM-136)
Input voltage range: 150-264Vac
Outputs: 9.5V 10A, 37V 8.5A, 13V 16A, 25V 9A, 19.5V 6.5A, 19.5V 3.7A, 31V 4A, 19V 2A (1203W, 235AT total)
Ambient: 50degC max
Orientations: All except psu vertical with airflow downwards and psu upside down.
Model: CA1500 12FF_MF, 12FF, 12FF, 12FF (NS - AMD - 004)
Input voltage range: 207-264Vac
Outputs: 13V 34.5A max, 13V 34.5A max, 13V 34.5A max, 13V 26.5A max
Page 16 of 21 17032 issue 21, September 2018