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GEK-98834B

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Figure 7 shows 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

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Содержание TOV

Страница 1: ...GE Power Management TOV Instructions GEK 98834B Modular Voltage Relays Click here to get to our homepage http www ge com indsys pm...

Страница 2: ...Y 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 CON...

Страница 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 whic...

Страница 4: ...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 f...

Страница 5: ...ux 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...

Страница 6: ...ne 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 step...

Страница 7: ...rminals 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 dep...

Страница 8: ...OLDU 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 automatical...

Страница 9: ...tion 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 30...

Страница 10: ...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 C...

Страница 11: ...834B 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...

Страница 12: ...nce 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 sin...

Страница 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...

Страница 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 correc...

Страница 15: ...gures 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 versio...

Страница 16: ...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 conne...

Страница 17: ...ows 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...

Страница 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 se...

Страница 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...

Страница 20: ...jury 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 re...

Страница 21: ...onging 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 necessar...

Страница 22: ...ely 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...

Страница 23: ...ce 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 TR...

Страница 24: ...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...

Страница 25: ...LS 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 switc...

Страница 26: ...hes 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 u...

Страница 27: ...mmended 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...

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