EZA2500 Series
TDK-Lambda
<Page>
11-4. Output Ripple & Noise
The specification for maximum ripple value is measured according to specified measurement circuit, using Ripple
Meter RM-103 made in Keisoku giken (co.Ltd).
When a distance of Load line becomes long, the ripple noise can be reduced by attach the Electrolytic capacitors,
film capacitors, etc to the load terminals.
11-5. Series Operation
Series operation is not possible.
11-6. Parallel Operation
Parallel operation to increase the output current is possible.
Converter has droop function for current share.
Droop ratio can be set via RS-485.
Voltage drop will increase with a large current droop ratio which makes it easier to balance.
Please follow below indications:
1)
Please set same output voltage.
2)
Please use same size and same length of output wires.
3)
Please use same size and same length of input wire for each separate converter.
11-7. Dynamic Loads
At full load or no-load conditions and during transients and dynamic changes of output voltage, over-voltage
protection and under-voltage protection might work. So, please pay attention.
11-8. Isolation Test
Isolation Resistance between secondary (DC48V) & signals and chassis (
) is more than 100M
w
at 500VDC.The
voltage setting of isolation tester to the test voltage should be made and verified before the test is performed higher
voltages than recommended could damage the unit.
Ensure that the unit is fully discharged after the test.
A
Secondary (DC48V) & signals and chassis (
) : more than
&%%+
5
at 500VDC
*All pins of RS-485 and CN connectors must be shorted.
17/22
Bi-Directional Converter
EZA2500
Bi-Directional Converter
EZA2500
Battery
HVDC BUS
(Grid)
D
D
D
D
F
F
F
F
F
D
320V
320V
48V
48V
