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4-7. Series Operation
For series operation, either method (A) or (B) is possible.
(A)
Power Supply
Output
Terminal
Output
Terminal
(*1) In case of (A), please connect bypass diodes to prevent reverse voltage. Please select a bypass diode with maximum forward current
rating more than output load current. And maximum reveres voltage must withstand each power supply output voltage.
*Series operation for ZWS100BAF, ZWS150BAF, ZWS300BAF possible without bypass diode.
Never use when one of the unit not operate, which may leads damage.
4-8. Parallel Operation
For parallel operation, method (B) is possible.
(A) To increase the output current is not possible.
Power Supply
Output
Terminal
Output
Terminal
4-9. Isolation Test
Isolation resistance between Output -
be done before the test. Ensure that the unit is fully discharged after the test.
■Output -
: 500VDC More than 100MΩ
(A)ZWS50BAF, ZWS75BAF
Isolation
Tester
Load
(*1）
Load
is more than 100MΩat 500VDC. For safety operation, voltage setting of DC isolation tester must
AC(L)
AC(N)
+
_
(B)
Power Supply
Output
Terminal
Output
Terminal
(B) To use as Back-up Power Supply
1. Adjust the output voltage of each power supply to be the same.
2. Set power supply output voltage higher by the forward voltage
drop (Vf) of diode.
Use within the specification for output voltage and output power.
Power Supply
Output
Terminal
Output
Terminal
(B)ZWS100BAF, ZWS150BAF, ZWS300BAF
Isolation
Tester
-5-
TDK-Lambda
ZWS-BAF Series
Instruction Manual
Load
Load
Load
AC(L)
AC(N)
+
_
+
R(CN52)
_
R(CN52)
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