Novatek RNPP-302 User guide

NOVATEK-ELECTRO LTD
Research-and-Manufacture Company

RNPP-302

MULTIFUNCTIONAL

THREE PHASE VOLTAGE MONITORING RELAY

USERS MANUAL

www.novatek-electro.com

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APPLICATION

Universal Three phase voltage monitoring relay RNPP-302 (hereinafter RNPP-302) is designed for the

permanent voltage monitoring, control and protection of the equipment with rated voltage parameters of
220/380V and 230/400V or 240/415V at rated frequency of 50Hz. RNPP-302 protects the power load from the
following alarm situations and power faults:

- over/under voltage, voltage surges and fluctuations,

- phase loss,

- phase coincidence,

- wrong phase sequence,

- phase imbalance in the AC power circuits

- control over the full phase switching of the contactor

- remote control input signal to operate with the power load as per requirement

The RNPP-302 operates with the magnetic coil of the external contactor which in it’s turn operates with the
power load. The RNPP-302 constantly checks (before and after turning on) the condition of the power contacts
of magnetic contactor and detects the stuck together and burned contacts. When the power parameters return
back to normal after the interruption or when the reason of the tripping is eliminated the RNPP-302 performs
automatic reclosing and thus restart the equipment. It does so following a time delay (0-600 sec), set
previously by the user.

RNPP-302 relay may work in four independent modes:

1. phase loss monitoring mode without voltage level control (parameter τΠρ = 0);

2. minimum voltage monitoring mode (parameter τΠρ = 1);

3. maximum voltage monitoring mode (parameter τΠρ = 2);

4. symmetrical min/max voltage monitoring mode (parameter τΠρ = 3)

The LED display of the RNPP-302 indicates:

- Acting value (true RMS) of the phase voltage or alternatively line voltage depending on mode of

operation;

- Voltage fault in mains power supply and the type of the interruption;

- State of output relay contacts (OPEN/CLOSE)

NOTICE. The term “rated voltage” used in this device manual means that the input voltage
corresponds all settings and parameters adjusted by user (see Table 2).

Time countdown of the autoreclosing delay starts from the moment of the fault detection (not from the
moment when the power parameters recovered to their corresponding rated values)

During the countdown of the autoreclosing time delay LED indicator REL will blink in case of t he normal
power parameters.

1. MAIN FEATURES

Digital input to turn ON/OFF the RNPP-302 remotely ;

Changeover relay output (8A 250V at cos φ=1) for the operation by the magnetic contactor to commutate
any desired power load;

Normally Opened relay contact (8A 250V at cos φ=1) for the signalization

Measurement accuracy for tripping thresholds: not exceed 3V

Rated phase/line voltage 220/380V (230/400V or 240/415V)

The adjustable ranges for minimal voltage; maximal voltage tripping; phase imbalance; t ime delays for the
protection tripping; automatic restart (autoreclosing) time and other adjustable param eters are shown in the
Table 2.

Rated power consumption: not exceed 5 W

Protection degree of the enclosure case: IP40

Protection degree of terminal block: IP20

Operational temperature range, °C: from - 35 to +55

Storage temperature conditions, °C: from - 45 to +75

RNPP-302

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Weight not more than 0,3 kg

Mounting: fit the standard 35 mm DIN-rail

Mounting position: arbitrary - as per requirement

Dimensions and control buttons are shown on Figure 1.

Figure 1. Front panel, controls and size dimensions of the RNPP-302
Red LED “L1” – lights up in case of the alarm on phase L1
Red LED “L2” – lights up in case of the alarm on phase L2
Red LED “L3” – lights up in case of the alarm on phase L3
Green LED “REL” – lights up when the output relay is closed
“SET” button – to set the parameter value
“WR” – to write and save the parameter
“

and ” Buttons - to scroll and adjust the parameters value in menues

Notes:

button hereinafter in text – “UP”, button – “DOWN”

2. START UP PROCEDURE

Connect the contactor (magnetic starter) to the RNPP-302 and mak e all other necessary connections as
shown on Figure 2
Connect mains power supply to the input terminals of RNPP-302
Turn ON the power and adjust all required settings according to Table 2

NOTE. All wiring connections must be performed on the dead device.

3. RNPP-302 SETTINGS AND CONTROLS

3.1. At the initial state on the front panel the following information is shown:

- depending the operation mode phase-to-neutral voltage on each phase (L1, L2, L3) if the parameter

Υ01= 0 or alternatively phase-to-phase voltage (L1-L2; L2-L3; L3-L1) if parameter Υ01=1;

- Phase Indicator (indicator of the currently measured phase (L1, L2 or L3));

- Operational state of the output relay (Open/Closed)
To select the phase manually

measurement values on phases are displayed in turns automatically every 5 seconds

3.2. To view and change the parameters it is necessary press SET button and all phase indicators will light
up. To scroll between the parameters use DOWN and UP but tons. To enter the parameter and chance value
press SET button. Then using DOWN and UP buttons set the desired values. To save the paramet er and exit
the current menu press WR button. To exit the menu without saving press SET button. If none of the buttons
are pressed within 15 seconds the RNPP-302 returns to initial state.

(ιιΥ=0) use DOWN and UP buttons, alternatively if parameter ιιΥ=1 the

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