Sollatek AVR 3X20 Mode D'emploi page 16

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a time to the end. Check P1 points to 230V on the PCB ident, +/-5V.
19. Slowly reduce the variac and check the output voltage goes down to 220V before rising again. This should
happen a total of 6 times.
20. Increase and decrease the variac several times and check that all LEDs (LD1 to 7) light in turn. Check also that
there is no 'thudding' noise made by either the transformer or the variac. (A faint 'click' may be heard from
the PCB but this is normal.)
21. Switch the variac off and remove the neutral connection from J5 on the ST165. Turn the variac on again and
check that the output lamp and green LED (LD5) come on for about 1 second and then go off, followed by the
four rectangular LEDs lighting in a scanning pattern.
22. Switch off, reconnect the neutral and switch on. Check the output lamp comes on again.
23. Reduce the variac and check the output switches off at 130 to 135 V input.
24. Switch off and disconnect all mains power
25. Repeat the above procedure for the other phases if required.
26. The AVR is now ready for re-connection on-line.
Following Slave PCB Replacement
The AVR should be disconnected from Mains and Load before commencing this test.
1. Connect the Variac input to a mains supply but do not switch on.
2. Connect Test Lamp across Neutral and output of phase under test.
3. Connect the Variac Neutral to the AVR incoming Neutral terminal
4. Connect Variac Live output to the Incoming Mains connection of the phase under Test.
5. UNITS WITH AVS ONLY Using Safebloc, connect (but do not switch on) mains supply live to terminal
marked 'Test Use Only' , situated bottom right of the rear panel. This will supply power to operate the AVS
contactor, switching on the lamp at the output.
6. Reduce Variac output voltage setting to zero.
7. Connect Multimeter #1 (indicating AC Voltage 600V scale) across variac output.
8. Fit clamp-on current meter around variac live out cable (set to 200A)
9. Vary input volts between 160 and 280V a number of times to ensure the replaced PCB is functioning properly.
Lamp on output should be lit.
10. Leave on soak test for 1 hour.
11. Switch off and disconnect all input and output connections.
12. The AVR is now ready for re-connection on-line
Digital Meter 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. Connect Multimeter #1 to variac output
3. Connect Multimeter #2 to AVR output
THREE PHASE AUTOMATIC VOLTAGE REGULATOR Issue: Feb 2002 THREE PHASE AUTOMATIC VOLTAGE REGULATOR Issue: Feb 2002
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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