GE Power Management
TOV
InstructionsGEK 98834B
Modular Voltage Relays
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Page 1: ... GE Power Management TOV Instructions GEK 98834B Modular Voltage Relays Click here to get to our homepage http www ge com indsys pm ...
Page 2: ...TY 8 4 9 FREQUENCY RANGE 8 4 10 BURDENS 8 4 11 MAXIMUM VOLTAGE 8 4 12 TYPE TESTS 9 4 13 TIMING 9 5 OPERATING PRINCIPLES 10 5 1 THREE PHASE VERSIONS TOV4000 11 5 2 SINGLE PHASE VERSIONS TOV5000 11 6 CONSTRUCTION 12 6 1 CASE 12 6 2 IDENTIFICATION 13 6 3 EXTERNAL CONNECTIONS 14 6 4 PRINTED CIRCUITS BOARD MODULE 15 6 5 LOCATION OF CONTROLS AND TARGETS 16 6 6 INTERNAL CONTROLS AND TEST POINTS 17 7 RECE...
Page 3: ... it take into account the circumstances that may be present in your installation operating or maintenance activities Should you wish to receive additional information or for any particular problem which cannot be solved by referring to the information contained herein please write to GE Power Management S A Av Pinoa 10 E 48170 ZAMUDIO ...
Page 4: ...5 s The settings are adjusted using the switches located on the front side of the relay The single phase type relays include a filter for the third harmonic The three phase models do not include that filter The TOV relays are modular solid state relays and are supplied to the customer in a 1 8 rack case allowing it to be a part of a distribution system ...
Page 5: ...aux 24 48 VDC VAC G Vaux 48 125 VDC VAC H Vaux 110 240 VDC 110 220 VAC C Individual housing S As part of a MID system 6LQJOH 3KDVH 0RGHO LVW TOV 5 0 3 B 1 0 00 DESCRIPTION 1 20 275 VAC 2 50 305 VAC 3 3 66 VAC 1 50 Hz filter 2 60 Hz filter F Vaux 24 48 VDC VAC G Vaux 48 125 VDC VAC H Vaux 110 240 VDC 110 220 VAC C Individual housing S As part of a MID system ...
Page 6: ...one n o trip contact three form C type relays one for power supply alarm one for pickup and one auxiliary trip The operating input voltage is as follows depending on the model 20 to 275 VAC in 1 V steps 50 to 305 VAC in 1 V steps 3 to 66 VAC in 1 V steps The relay power supply range can be selected from the following choices 24 48 VDC VAC 20 48 125 VDC VAC 20 110 240 VDC 20 110 220 VAC 20 ...
Page 7: ...erminals and one of them does not contribute to the fault Some of the most common applications of the TOV when operating as an overvoltage relay are 1 Time delay devices in which operation security depends on the voltage 2 Protection against overvoltage in a three phase system with the possibility of being delayed from 100 ms up to 25 5 s 3 Protection against a phase to ground fault in three phase...
Page 8: ...LOLDU 3RZHU 6XSSO Rated Voltage VDC VAC Operating Range VDC VAC 24 48 19 58 48 125 38 150 110 240 88 288 If the power supply falls below the values listed in the table the relay disconnects automatically and activates a power supply alarm auxiliary contact The power supply variation included in the ranges established by the table cause a variation in the operating margins not greater than 3 The re...
Page 9: ...ation UHTXHQF 5DQJH SINGLE PHASE THREE PHASE Rated frequency 50 or 60 Hz 50 60 Hz Effective range 48 51 Hz or 57 63 Hz 48 63 Hz Operative range 46 53 Hz or 56 64 Hz 46 64 Hz XUGHQV 20 275 VAC and 50 305 VAC ranges 3 66 VAC range Tap set to 50 VAC Tap set to 5 VAC V VAC VA V VAC VA 30 0 012 5 0 019 120 0 100 25 0 022 210 0 291 45 0 053 300 0 783 65 0 092 0D LPXP 9ROWDJH Ranges 20 275 VAC and 50 305...
Page 10: ...0 5J IEC 255 5 1 Mhz noise test 2 5 kV common mode 1 kV differential mode Class III IEC 255 22 1 Electrostatic discharge Class IV IEC 255 22 2 Radio interference Class III IEC 255 22 3 Fast Transient Class IV IEC 255 22 4 7LPLQJ Instantaneous 30 to 50 ms Definite time range 130 ms to 25 5 s in 100 ms steps ...
Page 11: ...8834B 10 23 5 7 1 35 1 3 6 The different TOV relay models operation principles are shown in figures 1 and 2 Figure 1 Three Phase version block diagram Figure 2 Single phase version block diagram VA VB VC Vo ...
Page 12: ...once the set time has passed the relay trips and the trip indicator TRIP lights up If the fault disappears this indicator remains lighted until RESET button is pressed 6LQJOH 3KDVH 9HUVLRQV 729 The single phase versions different from the three phase versions may include a filter for the third harmonic in the stage prior to the rectifiers as well as the possibility of selecting the operating mode ...
Page 13: ...GEK 98834B 12 216758 7 21 DVH The TOV case is made of steel The general dimensions are provided in figure 3 Figure 3 Case dimensions in mm 226B6086H1 4 HOLES OF 7 FOR DRILLING ...
Page 14: ... mechanical support and electrical connections The case includes two plastic guides to ensure correct alignment GHQWLILFDWLRQ The complete relay model is described on the nameplate To ensure the correct identification the model number should be checked so that it coincides with the number on the table in the description section ...
Page 15: ...igures 5 and 6 illustrate the TOV external connections for the three phase and single phase models respectively Figure 5 Three phase version external connections 226B6083H1 Figure 6 Single phase version external connections 226B6083H2 ...
Page 16: ...d circuit board The handles on the front allow the module to be removed from the case The module s electrical connections are established through a male connector that is inserted inside a female connector located in the rear side of the case allowing the module to be easily extracted ...
Page 17: ...hows the location of the TOV s controls and targets Figure 7 Location of controls and targets 1 6 3 2 4 5 1 Power On Green LED 2 Pickup indicator RED LED 3 Operating Voltage selection 4 Time selection 5 Trip indicator RED LED 6 Trip memory RESET pushbutton ...
Page 18: ... cause of the trip has disappeared The microswitches on the front panel are divided into two groups the upper group of microswitches is used to select the trip level while the lower group is used to select the timing QWHUQDO RQWUROV DQG 7HVW 3RLQWV The relays are calibrated before leaving the factory therefore it is not necessary for the user to calibrate them Changing between overvoltage and unde...
Page 19: ...GEK 98834B 18 6 1 3 6 02 29 592 7 81 592 7 7 2 3 66 7 5 7 287 2 3 66 7 5 Figure 8b Under overvoltage selection for equipments with PCB revision 3 or lower for single phase models only ...
Page 20: ...njury or rough handling is evident a damage claim should be filed at once with the Transportation Company and the nearest General Electric Sales Office should be notified promptly When unpacking the relay care should be taken not to lose the screws supplied in the box If you do not intend to install the relay immediately it is recommended that the relay is stored in its original package and kept i...
Page 21: ...longing to this fundamental wave the devices that are powered by alternating current are affected by the form of wave applied To correctly test relays that operate on alternating current it is necessary to use a voltage and or a current sine wave The purity of a sinusoidal wave absence of harmonics cannot be expressed specifically for any given relay However in any relay that includes tuned circui...
Page 22: ...tely However if the relay is calibrated under these conditions it s operating characteristics may be outside the tolerance levels 7HVWLQJ WKH 7DUJHWV Perform the connections in accordance with figure 9 without connecting the X and Y terminals and apply a DC voltage to the relay Press the RESET button and check that all three LEDs on the front panel light up CHRONOMETER cT In the single phase versi...
Page 23: ...nce with the values in table 1 In the same way check that when the relay trips the TRIP indicator is lit and remains lit once the cause for fault disappears Press the RESET button and check that the TRIP LED is turned off TABLE 1 Range 20 to 275 SWITCHES TO RIGHT SW1 Umin VAC Umax VAC 8 top 19 95 22 05 7 20 9 23 1 6 22 8 25 2 5 26 6 29 4 4 34 2 37 8 3 49 4 54 6 2 79 8 88 2 1 140 6 155 4 Range 50 t...
Page 24: ...d voltage to the relay Apply to points X and Y a voltage higher that the trip level in the case of an overvoltage relay and lower than the trip level in the case of an undervoltage relay Check that the time indicated by the chronometer is less that 50 ms 7LPLQJ 7HVW Apply a fault and check that the results are in accordance with the following table SWITCHES TO RIGHT SW2 Tmin ms Tmax ms 1 top 123 1...
Page 25: ...ULS HYHO 6HWWLQJ The following example is for setting a relay with a range of 20 275 V The setting procedures are the same for models with other ranges This setting is performed through the upper switch block which has the following inscription below it Vs 20 To set the selected trip voltage move the corresponding switches to the right ON position The input value range is in 1V steps If for exampl...
Page 26: ...ches on the front of the relay by adding the value of the microswitches placed to the right To select the instantaneous trip just place all switches to the left 7HVWV Given that the majority of users use different procedures for installation tests the section ACCEPTANCE TESTS includes all necessary tests to be performed as installation tests according to the user s criteria ...
Page 27: ...ommended that a periodic test program is followed Given that the intervals between these tests vary for different types of relays and installations as well as the experience of the user performing the tests it is recommended that the points described in the section INSTALLATION are checked at intervals of 1 to 2 years ...
