GE TOV User manual
GE Power Management
TOV
Instructions
GEK 98834B
Modular Voltage Relays
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1. DESCRIPTION..................................................................................................................3
2. MODEL LIST .................................................................................................................... 4
2.1. THREE PHASE MODEL LIST....................................................................................................... 4
2.2. SINGLE PHASE MODEL LIST...................................................................................................... 4
2.3. SPECIAL MODELS.................................................................................................................... 5
3. APPLICATION ..................................................................................................................6
4. TECHNICAL CHARACTERISTICS .................................................................................... 7
4.1. TEMPERATURE RANGE............................................................................................................. 7
4.2. INSULATION TEST ................................................................................................................... 7
4.3. OPERATING RANGE DEPENDING ON THE DIFFERENT MODELS ....................................................... 7
4.4. AUXILIARY POWER SUPPLY ...................................................................................................... 7
4.5. TRIP CONTACT CAPACITY ......................................................................................................... 7
4.6. AUXILIARY CONTACTS CAPACITY .............................................................................................. 8
4.7. ACCURACY ............................................................................................................................. 8
4.8. AMBIENT HUMIDITY................................................................................................................. 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. RECEPTION, HANDLING AND STORAGE .................................................................... 19
8. ACCEPTANCE TESTS.................................................................................................... 20
8.1. VISUAL INSPECTION............................................................................................................... 20
8.2. ELECTRICAL TESTS ................................................................................................................ 20
9. INSTALLATION.............................................................................................................. 24
9.1. INTRODUCTION ..................................................................................................................... 24
9.2. INPUT SETTING ..................................................................................................................... 24
9.3. TESTS.................................................................................................................................. 25
10. TESTS AND PERIODIC MAINTENANCE....................................................................... 26
GEK-98834B
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The information provided herein does not intend to cover all details of the variations of
the described equipment nor does 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
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The TOV relays are over or undervoltage relays, single phase or three phase,
instantaneous or fixed time adjustable from 0.1 to 25.5 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.
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TOV 40*3*030*00 *DESCRIPTION
1Voltage range: 20/275 VAC
2Voltage range: 50/305 VAC
IUndervoltage
MOvervoltage
FVaux= 24/48 VDC/VAC
GVaux= 48/125 VDC/VAC
HVaux= 110/240 VDC
110/220 VAC
CIndividual housing
SAs part of a MID system
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TOV 5 0 * 3 B * 1 0 * 00 *DESCRIPTION
120/275 VAC
250/305 VAC
33/66 VAC
150 Hz filter
260 Hz filter
FVaux= 24/48 VDC/VAC
GVaux= 48/125 VDC/VAC
HVaux= 110/240 VDC
110/220 VAC
CIndividual housing
SAs part of a MID system
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TOV------- 9 -0 1 - Timing: t=0.19 + 0.75 * ( )
TOV ------- 9 -0 2 - Timing: t=0.375 + 1.5 * ( )
TOV ------- 9 -0 3 - Instantaneous = 20 ms
TOV ------- 9 -0 4 - Number or tripping contacts increased
All of the models include 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%
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Some of the most common applications of the TOV when operating as an
undervoltage relay are:
1. Instantaneous detection of undervoltage in automatic transfer equipment.
2. Fault detection for line protection equipment with a communication channel. If the line
has three terminals, 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 systems with an insulated
ground and in ground fault protection of AC rotating machines.
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Operating: 14 °F to 131 °F (-20 °C to +55 °C)
Storage: -40 °F to 149 °F (-40 °C to +65 °C)
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Between any terminal and ground:
2 kV, 50/60 Hz, 1 min duration.
Between independent circuits:
2 kV, 50/60 Hz, 1 min duration.
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20 to 275 VAC in 1V steps
50 to 305 VAC in 1V steps
3 to 66 VAC in 1V steps
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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 relay consumption is less
that 3W for any power supply value.
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Continuous: 3A
Make and carry: 30A
Break: 180 VA resistive at 125/250 VDC
60 VA inductive at 125/250 VDC.
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Continuous: 3 A
Make and carry: 5 A during 30 s.
Break: 25 W inductive at 125/250 VDC
Carry continuously: 20 W maximum of 250 VDC or 5 A.
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Voltage: ±5%
Time: ±5% or 30 ms (whichever is greater).
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Up to 95% without condensation.
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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
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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
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Ranges 20-275 VAC and 50-305 VAC: 400 VAC continuously.
Range 3-66 VAC 200 VAC Continuously.
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Insulation test: 2kV, 50/60 Hz for 1 min (IEC 255-5)
Impulse test: 5 kV peak, 1.2/50 µs, 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)
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Instantaneous: 30 to 50 ms.
Definite time range: 130 ms to 25.5 s in 100 ms steps.
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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
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The input voltage transformers provide a secondary voltage adequate for the internal
operation at low voltages as well as an electrical insulation with the internal electronic
circuits.
The measuring signals are rectified and are compared with the trip level setting in the
level detectors. Once a fault is detected (overvoltage or undervoltage), the pickup
indicator Vs lights up.
When the fault has been detected, the trip can be instantaneous or time delayed.
Selection of this option is performed by switches located on the front of the relay. If the
fault situation remains 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.
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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 as undervoltage or overvoltage. As in the three phase case,
the rectifier output signal is compared to the trip level.
Once the pickup has been produced, the operation is similar to the three phase model.
Both versions, single phase and three phase, have a power supply supervision circuit.
If the power supply reduces by 20% of the rated voltage, the relay automatically turns
itself off to prevent incorrect operations.
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The TOV case is made of steel. The general dimensions are provided in figure 3.
Figure 3. Case dimensions in mm (226B6086H1)
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Figure 4. Rear view (226B3205H1)
Vertically mounted, the module contains a connector on the rear side that provides a
mechanical support and electrical connections.
The case includes two plastic guides to ensure correct alignment.
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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.
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Figures 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)
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The TOV relay consists of a single printed 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.
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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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The green indicator located on the top of the module (Vaux) indicates the relay power
supply status. When the power supply is operating correctly the indicator stays on,
whereas if the power supply is disabled the indicator light is turned off.
The red LED below it (Vs) is the pickup indicator. This led remains lit as long as the
relays detects a fault condition.
The red indicator labeled TRIP is a trip indicator that remains lit after a trip and can be
turned off by pressing the RESET button once the 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.
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The relays are calibrated before leaving the factory, therefore it is not necessary for the
user to calibrate them.
Changing between overvoltage and undervoltage in the single phase models is
performed through the use of jumpers as shown in figure 8:
SINGLE PHASE MODEL
Figure 8a. Under-overvoltage selection for equipments with PCB revision 4 or higher (for
single phase models only)
JP5 JP7 JP6 JP5 JP7 JP6
JP8 JP8
OVERVOLTAG UNDERVOLTAG
WITH
LOW
PASS
WITHOUT
LOW PASS
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Figure 8b. Under-overvoltage selection for equipments with PCB revision 3 or lower. (for
single phase models only)
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This relay is supplied to the customer in a special package, which adequately protects
it during transportation, as long as this is performed under normal conditions.
Immediately after receiving the relay, the customer should check whether it shows any
signs of transportation damage. If injury 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 in a dry, dust-free place.
It is important to check that the data on the nameplate coincides with the data from the
order.
This manual suits for next models
2
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