Sollatek AVR3x20-22 Mode D'emploi page 31

THREE PHASE AUTOMATIC VOLTAGE REGULATOR Issue: Jan 2016
3. Connect Multimeter #2 to AVR output
4. Increase input volts to 170V.
5. Digital meter should indicate 170V when set to Input Volts using push-button.
6. Digital meter should indicate 234V when set to Output Volts using push-button.
7. Repeat for other phases.
8. Output current display can only be checked when AVR connected on-line in use with the load connected.
Current displayed can be checked against actual output current measured using clamp-on current meter.
Distribution Surge Protection (DSP) function check
The AVR should be disconnected from Mains and Load before commencing this test.
1. Connect Variac as in PCB test procedure above.
2. Increase input volts to 230V.
3. Two LEDs on selected phase of DSP should be illuminated. The DSP is situated at the rear of the AVR. It may
be necessary to remove the back panel to access the DSP.
4. If only one or no LEDs are illuminated, it means the protection on the selected phase is at a reduced level or
completely ineffective, respectively. In either case the DSP should be replaced. See DSP replacement
procedure.
5. Repeat for other phases.
Automatic Voltage Switcher (AVS) function check
The AVR should be disconnected from Mains and Load before commencing this test.
NB This is a complicated procedure and should only be attempted by a qualified electrician
1. Connect two incoming phases of the mains supply in the normal way.
2. Connect a variac to a mains supply, running from the third phase.
3. Connect a light bulb to the output of any phase.
4. Switch on the first two phases. The red LED on the AVS should be lit.
5. Set the variac to 230V and switch on.
6. Time the delay before the AVS switches on (the light bulb lights). This is the time delay, which can be adjusted
on the AVS PCB using the DELAY pot. The green LED should be on.
7. Increase variac voltage until the AVS cuts out. The red high voltage LED should be on. The voltage at the input
to the AVS should be around 260V. This can be adjusted on the AVS PCB using the HIGH V pot.
8. Decrease the variac voltage to 230V. The high amber LED should be on. Wait until the AVS switches back on.
9. Further decrease the variac voltage until the AVS cuts out again. The voltage at the input to the AVS should be
around 190V. This can be adjusted on the AVS PCB using the LOW V pot.
10. Increase the variac voltage to 230V. The low amber LED should be on.
11. After the wait time the AVS should reconnect.
12. This concludes the AVS test.
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