ENG
Voltage Relay
6. CONNECTION
OVP-17P voltage relay is connected to a standard socket of
~
220 –
230
V /
50 Hz
power supply network. The socket must be rated at the current 15 A.
The power supply line of the socket must be protected by an automatic
circuit breaker with current not more than 15 A to protect against short
circuit and overload. Protected devices are connected to the output socket
of the voltage relay. The long consumption current of devices being
connected to the relay must not exceed 2/3 of the maximum load current
indicated in their specification.
The voltage relay is designed for operation indoor only. The device ope-
ration is inadmissible in places with high humidity and where ingress of
liquid on its case is possible. Ambient temperature during the voltage relay
operation must be in the range +10 to +35 °С.
Before connecting equipment to the voltage relay it is necessary to set
actuation
values, namely, high voltage switching off threshold (
U
H
), low
voltage switching off threshold (
U
L
) and turn-on delay time after voltage
normalization of the power supply network (
t
d
) (see p. 7). It is recom-
mended to set these values in accordance with operation manuals of
connected equipment. As a rule, household appliances can operate safely
at 10 % supply voltage deviation, i.e. in the range 198-242 V. The turn-on
delay time value after allowable voltage renewal is selected depending on
the type of connected electrical appliances. For refrigerators, air-con-
ditioners and other compressor devices the delay value should be not less
than 3 minutes.
7. PARAMETER SETTINGS
•
Connect the voltage relay to a
~220 –
230
V / 50 Hz
socket to set
protection parameters. The display shows its model name for a short time
and the zero time reference will start to switch on the relay output.
•
Enter the parameter setup mode holding the button “SET” within 3 se-
conds. There will be flashing “H” symbol and the upper switching-off
threshold
value (U
H
) in volts on the display
a
. Set a required value using
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