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Operation Manual
7. TROUBLESHOOTING
Problem
The AVR does not start.
The AVR is turned on, but
there is no output voltage.
The AVR often produces
clicking sounds.
The AVR has disconnected
the load. Active red indicator.
If none of the above methods can solve the problem, please seek professional advice at your
nearest service center. Never attempt to repair the product by yourself.
8. SPECIFICATIONS
Maximum load,
Safety fuse,
Input voltage, V/Hz
Output voltage, V/Hz
Switching time, ms
Short circuit protection
Environment temperature, °C
Humidity, %
Dimensions, mm
Weight, kg
Notes:
TM REAL-EL production.
Cause
2. There is no voltage in the
power supply network.
3. The fuse has activated.
4.The load connected is too
powerful.
The AVR is out of order.
Input voltage is very
unstable.
Input voltage is beyond
possible regulation range of
140 – 260 V.
500 / 400
~140–260 / 50
~220 ± 10 % / 50
available
0 – 40
up to 90
170 × 125 × 190
1.9
Technical support: www.real-el.com
STAB-500 M
Solution
1. Press the switch once again.
2. Make sure that power supply
is available.
3. Disconnect the AVR from the
power supply and change the
fuse.
4. Disconnect some load.
If the problem is not eliminated,
please address an authorized
service center.
It is normal. The AVR regulates
output voltage.
When input voltage is
normalized, the AVR tuns on
automatically.
ENG
5
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