RNPP-301 Three-phase voltage and phase monitoring relay
Contents
1. 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 WIRING DIAGRAM 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 SCHEME A Line voltage phase to phase SCHEME B Phase voltage line to ground monitoring mode monitoring mode KL K2 KL1 Wl B MN 78 9 10 n R2 3 4 5 3 4 5 2 2 KL K2 KL1 Wl B PROTECTION RELAY PROTECTION RELAY RNPP 301 a 1 5 STORAGE AND SHIPPING CONDITIONS The relays in manufacturer package should be stored in enclosed rooms at from 45 to 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 the2. different phases but instead from one and the same phase 3 monitoring of three phase lines for voltage presence and the mains voltage symmetry with adjustable phase imbalance setting 4 monitoring of the magnetic starter power contacts status at no load and under load 5 the load 415V 50Hz de energization with user set trip delay Toff through the opening the magnetic starter coil power circuit A C and D C electric circuit switching when fault conditions occur 6 the mains voltage quality monitoring after the relay had tripped and did reset automatically with the user set reset delay Ton upon the voltage parameters regeneration 7 all fault conditions not switching of the magnetic starter power contacts is included are displayed by special LEDs indicating the specific cause of the occurring voltage fault in the mains 2 TECHNICAL BRIEF Rated phase line voltage V ccceeeeee eee cece ien tenik nE ien eee eeesesecesnenenenenens 240 415 Mains trequency AZ aiina iaaea eaaa ceaptb oda ven bes hes a andante adaa hd Maceeeaddeetades 45 55 Adjustable range for Umin of nominal value ceeceeeeeeeeeeeeeeeeeeeeeeeeaees 5 25 Adjustable range for Umax of nominal value 2 cccecee eee eee eeeeeeeaeeeeeeees 5 25 Adjustable range for phase imbalance ccececeeeeeeeeeee este ee eeeeeeaeaeaeeeeeeaees 5 20 Adjustable range for TMin SOC 00 0 ccc eeeeee eee cnet terete teeta tena ee teeta een e
3. 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 3 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 When the relay tripped load is de energized due to the break in the MS coil power circuit by the N O 1
4. relay against mechanical damages in transit 6 WARRANTY Novatek Electro 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
5. 2 13 contacts It is recommended the 12 13 contacts to connect in series with the MS coil power supply The 10 11 12 13 output contacts specification Max current for 250 VAC Max power Max sustained safe voltage Max current for U 30VDC Cos 0 4 3A 1200VA 460V 3A Cos 1 0 5A MS power contacts transfer monitoring 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 the 1 2 3 terminals are connected to the corresponding phases of the MS output contacts The monitoring is performed as follows 1 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 2 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 3 When the relay trips for load de energization the test for open position of all three MS phas
6. NOVATEK ELECTRO LTD qr NOVATEK Research and Manufacture Company Electro RNPP 301 GXEZEZ THREE PHASE VOLTAGE el th AND 22 e PHASE MONITORING o yume PiS RELAY ee Oe Oe Toft FAT 301 kas Ton sec 0 E W Sa USERS MANUAL ki 8 9 10 11 oA v q CONTROLS DESCRIPTION AND DIMENSIONS DIAGRAM 1 control for minimum voltage threshold Umin 7 green LED signal that the mains voltage is present ON 2 control for maximum voltage threshold Umax 8 green LED signal that load is energized Load 3 control for peak phase imbalance threshold PI 9 red LEDs signal for the mains voltage fault magnetic starter MS power contacts monitoring Fault 4 control of trip delay setting for Umin Tmin sec 10 MS power contacts monitoring terminals 5 control of trip delay setting for the mains voltage faults 11 input contacts Toff sec 6 control for automatic reset delay setting Ton sec 12 output contacts 13 terminals for the mode selection line phase voltage monitoring www novatek electro com 2D 1 APPLICATIONS A RNPP 301 voltage control relay is designed for 1 monitoring of the tolerable RMS phase line voltage level at the option of user with independent setting adjustments for the minimum maximum voltage thresholds 2 monitoring of the correct phase sequence and phase non coincidence the phases are supposed to be coinciding when a load is energized not from two
7. a enna naees 0 20 Adjustable range for Toff SCC 0 0 0 ececceeeeeeee ee ee ee eee eeeeee eee eeeeeeeeaeeeaeeeeaeeteeees 0 10 Adjustable range for TON S C ccececceeeeeeee ee ee ee eee eeee eens eee ea eeeeaeaeaeeeeaeaeees 0 600 Minimum trip delay when threshold settings are reached SEC 0 e ceeeeeeeeeees 0 1 Reset energization delay when the relay energizes sec not more than 0 2 Voltage hysteresis V 0 ccccececee eee eect eee eee eens ee ee este ee eens aA aa aa aai 5 6 Accuracy of trip threshold for voltage V not more than 0 cceeeeeeeeeeeeeeeees 3 Phase imbalance accuracy not More than ceceeeeeeeeeeeeeee ee ee eases eaeeenees 1 5 Safe operating voltage of rated value 6 cce cee ce cece eee ee nent eee ea ease eaeeeeeeneaes 30 130 Power required under load VA not more than ececeeeeeeeeeeeeeeeeeeeeeeeees 3 0 Maximum switched current of output contacts A ce ceeeeee cent ee eee ee eee eee teen enees 5 Output contacts life e under load 5A no less than operations ecceceeeee ee eee eee ee eee teen en eeeed 100 000 e under load 1A no less than operations ccccceeecceeeeeeeeeeeeeeeeeeanees 1 min Protection degree of 5 SDA ALL GS ace Sea ae E PRE ME a ie NS ai Fate IP40 e terminal blocks icai a Whaat aca IP20 Operating temperature range C ssssesssssssssesrsrrsrsrertr
8. e contacts is per formed 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 Indication e the green LED ON is always on when at least one phase is under supply voltage e the green LED Load switches on when the load is energized the 12 173 output terminals are closed e each of three LED indicators Fault flashes according to specific type of fault all three LEDs flash in turn when there is phase reversal and or phase coincidence LEDs Umin and PI are flashing when there is a phase loss all three LEDs are on if the relay is disabled for the MS power contacts not switching Controls 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 e Umin trip threshold for the minimum allowable voltage of rated voltage e Umax trip threshold for the maximum allowable voltage of rated voltage e PI phase line voltage imbalance threshold according to selected monitoring mode difference between RMS phase line voltages of a lesser value e Tmin trip dela
9. srtrertrsrrtrrrsrsrtrsrsrrrerrsrene from 35 to 55 Storage temperature C ssssssssssseerersrsrsrtrrerrrtrsrtrtrstrersrsrertrstnerrnererersesrent from 45 to 70 Weight no more than Kg ssssssssssnssnessrnerrsrrrsrnrsrrsrrnsrnerrrrrrrrrrnrrnnrnnsrnnsrnnerne 0 200 Case dimensions 4 modules of S type Mounting 35 mm DIN rail Mounting position as desired 3 DESCRIPTION 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 phase voltage monitoring mode To enable phase voltage monitoring mode it s necessary to remove jumper in between terminals 8 9 and connect neutral wire to terminal 7 This mode of operation is recommended fot the situations when for the machinery the neutral shift is very critical within the range of user preset values and when phase imbalance is a matter of a great concern 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
10. y 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 e Toff trip delay covering all types of the mains voltage faults undervoltage excluded It s recommended to set Toff no less than 1 1 5 sec to prevent the excessive relay trippings due to switching perturbations in the mains e 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 4 PRELIMINARY STARTING PROCEDURE AND SERVICE MANUAL 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 specifications 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 4 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
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