Novatek-electro RNPP-301 User manual

RNPP-301
Three phase voltage and phase monitoring relay
NOVATEK-ELECTRO LTD
Research and Manufacturing Company
www.novatek-electro.in
TECHNICAL DESCRIPTION AND USERS MANUAL

RNPP-301
CONTROLS DESCRIPTION AND DIMENSIONS DIAGRAM
control for minimum voltage threshold, Umin (%);1.
control for maximum voltage threshold, Umax (%);2.
control for peak phase imbalance threshold, PI (%);3.
control of trip delay setting for Umin, Tmin (sec);4.
control of trip delay setting for the mains voltage faults, Toff (sec);5.
control for automatic reset delay setting, Ton (sec);6.
green LED signal that the mains voltage is present, ON;7.
green LED signal that load is energized, Load;8.
red LEDs signal for the mains voltage fault/ magnetic starter (MS) power contacts9.
monitoring, Fault;
MS power contacts monitoring terminals;10.
input contacts;11.
output contacts;12.
13 terminals for the mode selection: line/phase voltage monitoring.
A RNPP-301 VOLTAGE CONTROL RELAY IS DESIGNED FOR:
monitoring of the tolerable RMS phase/line voltage level (at the option of user) with independent setting1.
adjustments for the minimum/maximum voltage thresholds;
monitoring of the correct phase sequence and phase “non-coincidence” (the phases are supposed to be2.
coinciding when a load is energized not from two different phases but instead from one and the same
phase);
monitoring of three phase lines for voltage presence and the mains voltage symmetry with adjustable3.
phase imbalance setting;
monitoring of the magnetic starter power contacts status at no-load and under load;4.
the load (415V/50Hz) de-energization with user-set trip delay (Toff) through the opening the magnetic5.
starter coil power circuit (A.C and D.C. electric circuit switching) when fault conditions occur;
the mains voltage quality monitoring after the relay had tripped and did reset automatically with the user-6.
set reset delay (Ton) upon the voltage parameters regeneration;
all fault conditions (not switching of the magnetic starter power contacts is included) are displayed by7.
special LEDs indicating the specic cause of the occurring voltage fault in the mains.
1. APPLICATION
1 2
THE 10-11, 12-13 OUTPUT CONTACTS SPECIFICATION

RNPP-301
2. DESCRIPTION
1 2
The RNPP-301 relay (hereafter “the relay”) is a digital microprocessor device that provides a high degree of
reliability and accuracy. The relay doesn’t require any auxiliary power supply because it is self-powered by the
three-phase voltage to be monitored. This permits the relay to keep operate capability even when only one
phase is present (in the three-phase systems with neutral). Two modes of the mains voltage monitoring can
be selected at the user’s option:
The line voltage monitoring mode.
To go into this mode of operation one needs to apply the jumper strap between terminals 8-9; in this case to
connect the neutral is not necessary. This mode of operation is recommended when the neutral drift value and
phase voltage imbalance is not important as well as for isolated neutral three-phase systems. The relay will
trip when line voltage imbalance between phases occurs.
Note:To keep the relay operative and informative when only one phase is present it’s advisable to connect the
neutral to the terminal 7 not removing the jumper strap between terminals 8-9. In 3-Phase systems without
neutral the relay keeps operational capability when at least two phases are present.
The relay is connected in parallel to load by the L1, L2, L3 input contacts (the 4, 5, 6 terminals respectively).
The neutral connection mode (N, the 7 terminal) corresponds to the mains voltage monitoring mode of
operation selected by user. The 1, 2, 3 terminals provide the MS power contacts status monitoring and are
connected to the output MS power contacts terminals (see the wiring diagram). The relay has two groups of
independent output contacts (10-11, 12-13). In the “dead status” of the relay (a voltage is not applied to the
relay, the relay is not connected) the 12-13 are the N.O. contacts and the 10-11 are N.C. contacts. After the
relay has been connected in parallel to load when voltage is present in the mains and there is no cause for the
relay to trip, the 12-13 contacts are being closed and the 10-11 contacts are being opened with the user-set
reset delay Ton.
It is recommended the 12-13 contacts to connect in series with the MS coil power supply.
When the relay tripped, load is de-energized due to the break in the MS coil power curcuit by the N. O. 12-13
contacts
THE 10-11, 12-13 OUTPUT CONTACTS SPECIFICATION
Max. current for
~ 250 V A. C. Max. power Max sustained safe voltage ~
Max. current for
U = 30V D.C.
Cosφ = 0.4 3A
Cosφ = 1.0 5A
2000VA 460V 3V
One of the relay functions is the monitoring of the MS power contacts position before load energization and
after load is energized. The monitoring is performed if the1, 2, 3 terminals are connected to the corresponding
phases of the MS output contacts. The monitoring is performed as follows:
Before load is energized a test for open position of all three MS power contacts is performed. If at least•
one contact is closed (“sticks”) the relay will be disabled, the load is not energized, all red “FAULT” LEDs
are ON. To enable the relay one needs to remove supply voltage from it. It’s recommended to test the MS
running order, following safety regulations.
When load is energized, the test for closed position of all three MS power contacts is performed. If at least•
one MS phase contact is open, the relay will trip to de-energize load and will be disabled. All red “FAULT”
LEDs are ON. To enable the relay one needs to remove supply voltage from it. It’s recommended to test
the MS running order, following safety regulations.
MS POWER CONTACTS TRANSFER MONITORING

RNPP-301
TECHNICAL BRIEF
34
Rated phase/line voltage, V 240/415
Mains frequency, Hz 45-55
Adjustable range for Umin, % of nominal value 5-25
Adjustable range for Umax, % of nominal value 5-25
Adjustable range for phase imbalance, % 5-20
Adjustable range for Tmin, sec 0-20
Adjustable range for Toff, sec 0-10
Adjustable range for Ton, sec 0-600
Minimum trip delay when threshold settings are reached, sec 0.1
Reset/energization delay when the relay energizes, ≤ , sec 0.2
Voltage hysteresis, V 5-6
Accuracy of trip threshold for voltage, ≤, V 3
Phase imbalance accuracy, %, ≤ 1.5
Safe operating voltage, % of rated value 30-150
Power required (under load), ≤ , VA 1.0
Maximum switched current of output contacts, A 5
Output contacts life:
under load 5A, ≥, operations
under load 1A, ≥, operations
100 000
1 mln.
Protection degree of:
apparatus
terminal block
IP40
IP20
Operating temperature range, °C -35 to +55
Storage temperature, °C -45 to +70
Weight, no more than, kg 0.200
Case dimensions 4 modules of S-type
Mounting rail 35 mm DIN
Mounting position as desired
When the relay trips for load de-energization, the test for open position of all three MS phase contacts is•
performed. If at least one contact is closed (“sticks”), the relay will energize and de-energize the magnetic
starter one-two times. If the defect is not eliminated, the relay will be disabled, all red “FAULT” LEDs will
be ON. To release the relay one needs to remove supply voltage from it. It’s recommended to test the MS
running order, following safety regulations

RNPP-301
4. INDICATION
5.CONTROLS
the green LED «ON» is always on when at least one phase is under supply voltage;
the green LED «Load» switches on when the load is energized (the 12-13 output terminals are closed);
each of three LED indicators «Fault» ashes according to specic type of fault; all three LEDs ash in turn
when there is phase reversal and/or phase “coincidence”; LEDs «Umin» and «PI» are ashing when there is
a phase loss; all three LEDs are on if the relay is disabled for the MS power contacts not-switching
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The relay has six independent controls for basic parameters. For user’s convenience screwdriver slots of
adjusting potentiometers are brought out to the relay front panel.
Umin• — trip threshold for the minimum allowable voltage, % of rated voltage;
Umax• — trip threshold for the maximum allowable voltage, % of rated voltage;
PI• — phase/line voltage imbalance threshold (according to selected monitoring mode), difference
between RMS phase/line voltages, % of a lesser value;
Tmin• — trip delay for the minimum voltage that allows to ignore transient and/or starting voltage drops;
it’s recommended to set Tmin no less than 10 sec.
Toff• — trip delay covering all types of the mains voltage faults, undervoltage excluded. It’s
recommended to set Toff ≥ 1-1,5 sec to prevent the excessive relay trippings due to switching
perturbations in the mains;
Ton• — automatic reset delay after the relay tripped and the mains voltage parameters have regenerated;
this is also the energization time delay after the normal voltage was applied to the relay

RNPP-301
56
WIRING DIAGRAM
SCHEME A. LINE VOLTAGE (PHASE-TO-PHASE)
The relay should be connected in parallel to load according to the diagrams shown below.
The RNPP-301 wiring diagram with selectable mode of operation;
For line voltage monitoring mode that is not necessarily to connect the Neutral
SCHEME B. PHASE VOLTAGE (LINE-TO NEUTRAL) MONITORING MODE

RNPP-301
8. PRELIMINARY STARTING PROCEDURE AND SERVICE MANUAL
STORAGE AND SHIPPING CONDITIONS
WARRANTY
The relay is ready for service and needs no pre-starting procedure measures. Due to digital technology the
relay trip settings are calibrated quite accurate, so to set adjustments one doesn’t need to read voltage on the
control voltmeter. In order to install the relay at the using activity after extended storage it’s recommended to
test functionality of the relay. The application of the relay according to specications above and to the present
service manual, continuous work included, allows not to carry out preventive maintenance during service life.
To put the relay in operation one must follow operating instructions given below:
1. To set trip thresholds, trip delays and reset delay by potentiometer’s contact arms.
2. To select the mains voltage monitoring mode of operation (to remove/apply a jumping strap between the
8-9 terminals).
3. To connect the relay in parallel to the mains to be monitored (the 4, 5, 6 terminals); to connect, if needed,
the neutral (the 7 terminal), to connect the relay output contacts ( the 10-11,12-13 terminals) to the MS coil
power circuit (the control circuit).
4. To connect the 1, 2, 3 terminals to the MS output contacts. If there is no need in the MS power contacts
position monitoring, the connection is not effected.
5. To apply voltage to the relay.
The relay must be connected according to safety regulations.
It’s recommended to set trip thresholds in the “dead” status of the relay. In testing mode it’s
permitted to set trip threshold under voltage, following safety regulations
The relays in manufacturer package should be stored in enclosed rooms at -45° — +70° C and exposed
to no more than 80% of relative humidity when there are no fumes in the air that exert a deleterious effect
on package and the relay material. The Buyer must provide the protection of the relay against mechanical
damages in transit
Novatek company warrants a trouble-free operation of the RNPP-301 relay manufactured by it within 36 months
from the date of sale, provided:
-- the proper connection;
-- the safety of the inspection quality control department seal;
-- the integrity of the case, no traces of an opening, cracks, spalls etc
Production date_____________
Serial No____________________
Quality control department seal______________
Sale date______________________
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RNPP-301
NOVATEK ELECTRO INDIA PVT. LTD.
C-30, Patparganj Industrial Area, 1st floor,
Delhi - 110092, INDIA
Email: [e-mail]
Tel: [phone]
Fax: [phone]
www.novatek-electro.in