Novatek RNPP-311M User guide

NOVATEK-ELECTRO L TD
Research-and-Manufacture Company

RNPP-311M

MULTIFUNCTIONAL
THREE PHASE
VOLTAGE MONITORING
RELAY

USERS MANUAL

- 2 -

1 – Min/Max voltage tripping threshold (Umax/Umin);
2 – Autoreclosing time delay (Ton);
3 – Tripping time delay (Toff);
4 – Toggle switch: type of power circuit 380V/400V;
5 – Toggle switch (ON/OFF): phase sequence cont rol (SEQ);
6 – Toggle switch (ON/OFF): phase imbalance control (IMB);
7 – Toggle switch (ON/OFF): Minimal voltage tripping (Umin);
8 – Toggle switch (ON/OFF): Maximal voltage tripping (Umax);
9 – Green LED indicators of voltage presence on each phase;
10 – Red LED “ALARM” indicator showing also the open state of the output contacts;
11 – Input terminals 380V/400V;
12 – Input terminals 24V (available on request);
13 – Output terminals.

Figure 1 - Control descriptions and dimensions diagram

1. APPLICATION

Multifunctional voltage monitoring relay RNPP-311M (hereinafter RNPP-311M) performs the

following functions:

 Permissible voltage level control;
 Control of correct phase sequence, phase loss and phase coincidence;
 Phase imbalance control (control of full phase power load and phase symmetry);

 Turning the power load OFF by operating with output contacts in case of unallowable mains

voltage parameters. User adjusted Tripping time delay is in the range 0-10 sec (T

off);

 Mains voltage monitoring after tripping and automatic turning ON the power load when the

voltage parameters return back to normal conditions. Autoreclosing time delay is adjusted by user in
the range 0-600 seconds;

 Alarm indication in case of voltage faults and indication of voltage presence on each phase;

RNPP-311M

NOVATEK-ELECTRO

- 3 -

Using toggle switch (Figure 1; point 4) RNPP-311M user may select the type of the power
circuit (380V or 400V) and the set of optionally performed functions (using toggle switches 5-8 shown
on Figure 1).

It is possible to adjust the RNPP-311M to operate in following modes:

 complete voltage parameters monitoring;
 MIN/MAX voltage level monitoring;
 MIN voltage monitoring;
 MAX voltage monitoring;
 correct phase sequence monitoring and phase coincidence control;
 phase imbalance control
 control of voltage presence on each phase is being performed at any position of 5-8 switches,

even if all of them are set to OFF.
On special request it is possible to arrange operative input voltage of 24V for the RHPP-311M.

2. TECHNICAL CHARACTERISTICS

Rated line/phase voltage, V 380/220,

400/232

Rated frequency, Hz

Adjustable range for MIN/MAX voltage tripping threshold (Umax/Umin), % of rated voltage
Adjustable Tripping time delay (Toff), sec
Adjustable Autoreclosing time delay (Ton), sec

45  65
± (5  50)
0  10
0  600

Fixed time delay for tripping in case MIN voltage fault detected (time delay for Umin), sec 12*

Reaction time in case of phase loss, sec (not more) 0,2**
Readiness time on energizing the RNPP-311M, sec (not more) 0,2**
Phase imbalance value, V 60
Voltage hysteresis, V 5 - 6
Phase imbalance hysteresis, V 5 - 6
Accuracy for voltage tripping threshold measurement, V (not more) 3
Accuracy for phase imbalance measurement, % (not more) 2
Operational voltage range, % of rated voltage 50 - 150
Power consumption (under power load), VA (not more) 3,0
Maximal current that output contacts may commutate, A 5
Commutation endurance for the output contacts:

- under 5А power load,

- under 1А power load,

not less than 100 000 times
not less than 1 000 000 times

Protection degree:

- for the device

- for the terminals
Operational temperature range, С
Storage temperature conditions, С

From minus 35 up to +55
From minus 45 op to +70

IP40
IP20

Weight, kg (not more) 0,200
Overall Dimensions, mm 35 х 92 х 58
Standard 35 mm DIN rail mounting
Mounting position as per requirement (arbitrary)

*In case of minimal voltage alarm situation (Umin fault) then tripping time delay of 12 seconds will be
applied on the following conditions:
a) Umax and Umin switches are set to the left position and the SEQ and IMB are set to the right;
b) switches Umax; Umin; SEQ; IMB are set to the left position;
If within this 12 sec time interval it will happen some other type of voltage interruption (for example
Umax fault), then the RNPP-311M will trip the power load wi t h minimal time: wit h the Toff time preset
by the user or the left time of 12 sec interval.
***In case of maximal voltage mode – 0.3 seconds.

3. GENERAL DESCRIPTION

NOVATEK-ELECTRO

RNPP-311M