TEBEVERT III INVERTER SYSTEM (120 VDC)
07.11.2011
43
028-0009-006
5.2 TEST EQUIPMENT
•
A suitable voltmeter with measuring range 250 VAC, 100 mV and
60 VDC.
•
A clamp-on ammeter capable of measuring 250Amps AC.
•
A load bank capable of supplying 26,000 W.
5.3 TEST OF THE INVERTERS
Make sure the system is in the following state:
•
Disconnect commercial AC from the AC by-pass input.
•
Switch off all inverter modules.
•
Disconnect the load from the inverter.
•
Connect the load bank to the output of the inverter system.
•
Apply an ammeter around the phase conductor to the load bank.
5.3.1 INVERTER TEST ACTIVITIES
Action
Result
Switch on one of the inverter modules. The green LED “OUTPUT VOLTAGE
AVAILABLE” lights up. The green LED
“PARALLEL OPERATION” starts flashing
on the inverter. The red LED “FAULT”
on the by-pass lights up indicating there
is no mains voltage present and that not
all connected inverters are not operating.
Also an outgoing alarm will be given.
Connect a load of approximately 2kW
(2.5kVA modules) or 4kW (5.0kVA
modules). Switch the volt/ammeter
toggle switch on the by-pass module
to “V”. Connect a voltmeter to the
output of the inverter system.
The reading of the voltmeter and of the
display shall read 120 or 120/240VAC,
±
5%. (See Important Note below)
Switch the volt/ammeter toggle switch
on the by-pass module to “A”
The volt/ammeter and the clamp-on
ammeter shall be the same ±5%.
Connect a load of approximately 3kW
(2.5kVA modules) or 6kW (5.0kVA
The red LEDs “OVERLOAD” light up on
the inverter and the by-pass modules.
