ZMS100 Handbook
Output Parameters
There are six ZMS100 standard models as shown in the tables below. All of these models may be
either forced air or convection cooled. The output parameters are shown in the tables below.
Customer forced air cooled ratings:
Output channel
Channel 1
Convection cooled ratings:
Output channel
Channel 1
For 12V and 15V units derate from 100% at 100V to 90% at 90V and to 80% at 85V.
For 24V, 28V, 36V and 48V units derate from 100% at 90V to 90% at 85V.
Variations and limitations of use:
1. Component temperatures must be monitored in the end use application as described in the " Cooling for
Unit Temperature Table" below .
2. All ratings apply for ambient temperatures up to 50°C. From 50 to 70°C the total output power and current
ratings are both derated at 2.5% per deg C.
Connection details
Input Connections:
Molex or Amtek 2 pin header 7A/250V MAX
Cooling for unit
The following method must be used for determining the safe operation of PSUs.
The components listed in the following table must not exceed the temperatures given. To determine the
component temperatures the heating tests must be conducted in accordance with the requirements of the
standard in question. Consideration should also be given to the requirements of other safety standards.
Test requirements include: PSU to be fitted in its end-use equipment and operated under the most adverse
conditions permitted in the end-use equipment handbook/specification and which will result in the highest
temperatures in the PSU. To determine the most adverse conditions consideration should be given to the
end use equipment maximum operating ambient, the PSU loading and input voltage, ventilation, end use
equipment orientation, the position of doors & covers, etc. Temperatures should be monitored using type K
fine wire thermocouples (secured with cyanoacrylate adhesive or similar) placed on the hottest part of the
component (out of any direct airflow) and the equipment should be run until all temperatures have stabilised.
Vout
Adjustment
(V)nom.
range (V)
12
11.4 - 13.2
15
14.25 - 16.5
24
22.8 - 26.4
28
26.6 – 30.8
36
34.2 - 39.6
48
45.6 - 52.8
Vout
Adjustment
(V)nom.
range (V)
12
11.4 - 13.2
15
14.25 - 16.5
24
22.8 - 26.4
28
26.6 – 30.8
36
34.2 - 39.6
48
45.6 - 52.8
Output
Maximum
current (A)
power (W)*
8.4
6.7
4.2
3.6
2.8
2.1
Output
Maximum
current (A)
power (W)*
6.7
5.4
3.4
2.9
2.25
1.67
Page 15 of 22
100.8
100.5
100.8
100.8
100.8
100.8
80.4
81
81.6
81.2
81
80.2
260153 issue 8, February 2017