- 4 -
RNPP-302
NOVATEK-ELECTRO
Figure 2
. Wiring diagram of the
RNPP-302
to the 4 wires power circuits (with neutral phase present).
NOTES
. In case the RNPP-302 is installed in 3 wires power circuit (without neutral) the connection of the
Neutral Phase (Terminal #4) is optional (neutral may not be connected).
On the wiring diagram 220V contactor is shown like the example, if the connection of 380V contactor is
necessary contactor coil “K” should be connected to L1 or L2 phases.
4.
RNPP-302 OPERATION
4.1. Modes of RNPP-302 operation.
Depending on the
parameter value the RNPP-302 can work in following modes:
1) Phase loss relay (the relay monitors only the presence of voltage (not the voltage level) on every
phase)
=0;
2) Minimal voltage monitoring relay
=1;
3) Maximal voltage monitoring relay
=2;
4) Over/Under voltage monitoring (min/max) mode
=3 ;
Modes of operation, adjustable parameters, time delays and other controls are shown in
Table 2
.
4.2. Voltage monitoring modes
4.2.1 First start up instructions
In case of first start up during the installation or if the RNPP-302 was deenergized on first turning ON it is
necessary to add 0,3 - 0,4 seconds to the automatic reclosing time delay (
parameter). This time is
necessary for preparation to work and for self-testing of the RNPP-302.
4.2.2. Minimal voltage monitoring mode
(
=1)
If the
RNPP-302
was initially in turned OFF state then in case the correct voltage is applied to the device it
will automatically turn ON within the delay time defined by
parameter: the “
REL
” LED will light up and
terminals 23, 24 will open while 22, 24 and 20, 21 will close.
If the input voltage get lower than the minimal tripping threshold (parameter
) within the curtain time
defined by user (parameter
)
– then the RNPP-302 will turn OFF the power load: terminals 23, 24 will
close while 22, 24 and 20, 21 will open.
RNPP-302 has the operative acceleration in turn
OFF
time. If the voltage decrease is more than 80 V
regardless of the preset voltage tripping threshold the RNPP-302 will cut OFF the power load within 0,1 second.
After the recovery of the voltage parameters
– when controlled voltage becomes 5-6 V higher than minimal
tripping threshold (voltage hysteresis is 5-6 V) the relay will automatically turn ON the power load with delay
time defined by
parameter.
4.2.3. Maximal voltage monitoring mode
(
=2)
In this mode power load should necessarily be connected to terminals 23,24.
When giving correct power supply to the input of the RNPP-
302 the position of the output contacts don’t
change and co
rrespond to “cold state”: terminals 23, 24 are closed while 22, 24 and 20, 21 are open.
If the increase in input voltage is more than the maximal tripping threshold (parameter
) within the
