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Instructions for the Type VCP-W Ground & Test Device
(Simple) Upper Terminal Set Version
IB131007EN
Effective May 2015
Simple Electrically Operated Ground & Test Device
For use in Type VCP-W Switchgear rated up to 15kV, 25 and 40kA
UPPER TERMINAL SET VERSION
Simple Electrically Operated Ground & Test Device
For use in Type VCP-W Switchgear rated up to 15kV, 50 and 63kA
UPPER TERMINAL SET VERSION
Instruction Book
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Instruction Book
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Table of Contents Page Number
1.0 INTRODUCTION.................................................................................................4
2.0 DESCRIPTION....................................................................................................6
2.1 Power Grounding Breaker Operation..................................................7
2.1.1 Closing ....................................................................................7
2.1.2 Opening...................................................................................7
2.2 VCP-W Interlocks and Safety Features...............................................7
2.3 Interlocks - Basic Elements Description............................................8
3.0 OPERATION ......................................................................................................10
3.1 Safe Practices........................................................................................10
3.2 Reserved ...............................................................................................10
3.3 Applying Grounds to the Power Circuit..............................................11
3.4 Removing Grounds from the Power Circuit...................................... 14
3.5 Procedure for Installing Test Probes for Testing of the Power
Circuit ............................................................................................ 17
3.6 Procedure for Removing the Test Probes After Testing ................. 20
Appendix A - Front View ...................................................................................... 23
Appendix B - Side View ........................................................................................ 25
Appendix C - Control Scheme ............................................................................. 27
Appendix D1 - Outline Drawing (50 and 63kA Rated Version) …………..….….30
Appendix D2 - Outline Drawing (25 and 40kA Rated Version) …………...…….31
Appendix E - Breaker Code Plate Reference.......................................................32
Appendix F - How To Make Breaker Plates......................................................... 37
Appendix G - How To Make Cell Plates…........................................................... 38
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Type VCP-W Ground & Test
Device (Simple)
1.0 INTRODUCTION
Type Vac Clad-W switchgear assemblies are designed with all the bus work completely insulated for safety.
Since the current carrying parts are not readily accessible, the type VCP-W Ground & Test Device (G&T
Device) is designed for insertion into the breaker compartment to gain access to the primary stationary
contacts. It provides a convenient means to:
1. Ground the circuit for maintenance work.
2. Apply potential for cable testing.
Note About Roll-On-Floor Option
There is an equivalent style number to have a particular G&TD come with Direct Roll-On-Floor (ROF) wheels
factory installed. The ROF option is only for use with Direct-Roll-In breaker cells.
Please contact your Eaton Sales Office for further information.
CAUTION
Because of the unique application and vast variety
of system/user requirements, specific safe operating
procedures for the use of this device must be
developed by the user.
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NOTES
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2.0 DESCRIPTION
The G&T Device is a drawout element that can be inserted into a
upper or lower circuit breaker compartment in the same manner as a type
VCP-W circuit breaker. This device is equipped with a set of three upper
terminals. See figure 2.0.1, 2.02 and 2.03. In the lower compartment
the terminals of the G&T device connect to the main bus, and in the
upper compartment the terminals of the G&T device connect to the
switchgear terminals connected to cables. It is important the the user
review switchgear compartment configuration to confirm the circuit that
he/she wish to ground prior to using this device.
This device is deeper than the standard VCP-W breaker.
The stored energy closing mechanism for the power grounding
breaker is the same as used in type VCP-W breakers. It is capable
of applying the ground against a “Live” circuit if operational errors
Figure 2.0.1
have not cleared the circuit. However, in such a case, the relaying
G&T Device
at the source of power is expected to cause the source interrupter
to clear the circuit.
G&T Device
Figure 2.0.2
Top Stab G&T Device
(as providedI)
Figure 2.0.3
Top Stab G&T Device
(Rear view)
WARNING
This manual describes a specific
grounding breaker for use at a specific
location. It should not be referenced for
any other purpose or installation.
WARNING
Use of this device requires that the cell
has been modified from the original
factory condition to provide additional
bracing of the ground bus. Use in a
stock cell may result in severe
equipment damage and/or personal
injury if the ground switch is closed on
an energized circuit.
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2.1 POWER GROUNDING BREAKER OPERATION:
2.1.1 Closing
The power grounding breaker is closed by the remote operating station at the end of a 50 ft. long
cable (supplied with the device) upon depressing the “CLOSE” pushbutton (note that the
pushbutton does not have to be held depressed.):
1. The closing springs start to charge
2. After the springs are fully charged, they automatically
discharge to close the grounding breaker contacts.
Once the grounding breaker is closed, it can be locked in the
“Closed” position by removing the cable from the receptacle on the
device and locking the sliding cover that permits access to the
manual “Push to Open” button. See Figure 2.1.1.1.
Figure 2.1.1.1
Manual “Push to Open” Button Covered
2.1.2 Opening
The grounding breaker can be
opened by manual operation of
the “Push to Open” button
located behind the sliding cover
on the device front panel. See
Figure 2.1.2.1. The grounding
breaker can be opened
electrically using the remote
operating station. See Figure
2.1.2.2. The “OPEN”
pushbutton must be depressed.
Figure 2.1.2.1 Figure 2.1.2.2
For safety reasons, the breaker
Manual “Push to Open” Button Remote Operating Station
is prevented from opening in
less than 20 seconds after closing.
2.2 VCP-W INTERLOCKS AND SAFETY FEATURES
The device is designed to provide as many interlocks and safety features as practical for the
personnel performing any of the operations described earlier.
The device cannot be levered into or out of the “Connected” position unless the grounding breaker is open:
Upon levering a device with a closed grounding breaker into or out of the “Test” position, the
breaker is tripped open by the cam on the floor in the compartment.
In the “Connected” position, engaging the levering crank will trip the grounding breaker open.
An indicator on the front panel shows the status of the grounding breaker contacts, “Open-
Ungrounded” or “Closed-Grounded”. See Appendix A.
The grounding breaker can be locked closed with a padlock. This is accomplished by locking
the sliding cover on the device front panel to prevent access to the manual “Push to Open”
button. See Appendix A.
The grounding breaker cannot be manually closed. The spring charging socket and manual
close button are both covered by the device front panel. See Appendix A.
The grounding breaker can be closed only electrically by a remote operating station at the end
of a 50 ft. cable supplied with the device.
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The power to operate the grounding breaker in this device is obtained through the secondary
disconnect in the breaker compartment.
The grounding breaker cannot be opened electrically in less than 20 seconds after closing. This
feature permits the source interrupter to clear a fault if the grounding breaker is inadvertently
closed on an energized circuit. See Appendix C.
The control switch cable is connected to the device with a twist lock connector.
2.3 INTERLOCKS - BASIC ELEMENTS DESCRIPTION
Key Lock K1 (Keys KU and KB) - The K1 interlock is a two cylinder lock used to electrically
enable or disable the G&T Device.
In the E.O. G&T Device design, the K1 lock is a two cylinder transfer lock with a switch associated
with it. The switch is closed when Key KB is retained. The switch is open and the G&T Device
electrically disabled when Key KU is retained. See Figure 2.3.1.
Key Lock K2 (Keys KB and KC) - The K2 interlock is a two cylinder lock used to mechanically
lock the G&T Device “OPEN”.
It is not possible for an
operator of the G&T Device to
manually charge the closing
springs or to manually close the
device to ground.
See Figure 2.3.2
Figure 2.3.1 Figure 2.3.2
Key Lock K1 Interlock Key Lock K2 Interlock
Key Lock K3 (Key KC) - The K3
interlock is a single cylinder lock,
that when locked, prevents the G&T Device from insertion into the
breaker compartment.
In this design, the K3 lock in the locked position blocks the G&T
Device levering latch from engaging the levering nut in the breaker
compartment, and an interference hook prevents rolling the breaker
in to the cell. In addition, the K3 lock is used to prevent operation of
the levering in screw in the Connected position. Operation in the test
position is prevented by the interference hook; test operation must be
performed out of the cell using the test umbilical cable. Key KC is
Figure 2.3.3
removable with the lock bolt extended and the key normally resides in
Key Lock K3 Interlock
Key Lock K2. See Figure 2.3.3.
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Key Lock K4 (Keys KB & KD) - The K4 interlock is a two cylinder
lock used to mechanically lock the G&T Device in the ”CLOSED
-Grounded” position.
In this design, the K4 interlock is a two cylinder lock used with the
“Closed Locking Device” to prevent the G&T Device from being
opened. When the G&T Device is in the “OPEN-Ungrounded”
position, the “Closed Locking Device” is disabled. Key KD is
retained when the lock bolt is retracted. When the G&T Device is
“CLOSED-Grounded”, the “Closed Locking Device” is free to move
to the right. The lock bolt can now be extended and the “Closed
Locking Device” will be held in the secured “CLOSED-Grounded”
Figure 2.3.4
position. Key KD is now removable from lock K4. In this secured
Key Lock K4 Interlock
position, the “Closed Locking Device” has blocked operator access
to the manual “OPEN” pushbutton. Also, in this secured position,
an interlock switch electrically disables the electrical “OPEN”
function; and a mechanical interlock holds the main contacts in the
closed position even if the mechanism is tripped. A padlock hasp is
provided for securing the “CLOSED-Grounded” position with a
padlock. See Figure 2.3.4.
Key Lock K5 (Key KD) - The K5 interlock is a single cylinder lock
used to open and lock the test port shutters.
In this design, the K5 interlock is a single cylinder lock. Key KD is
removable when the lock bolt is extended and the key normally
resides in Key Lock K4. Key KD is available only when the G&T
Device is locked “CLOSED-Grounded”. Key KD is removable from
the K5 interlock in two extended bolt positions. One position is when
the Test Port shutters are closed. The second position is when the
Figure 2.3.5
Test Probes are inserted in the Test Ports and they are being
Key Lock K5 Interlock
retained by the “detent” position of the shutter. See Figure 2.3.5.
Selector Switch - A selector switch has the “OPEN”, “OFF” and
“CLOSE” positions and shall operate in association with the remote
“OPEN”/”CLOSE” pushbutton station. See Figure 2.3.6.
In this design, the selector switch functions as described below. In
the “OFF” position, the G&T Device is electrically disabled. The
selector switch is padlockable in the “OFF” position. This provides
the padlockable function for the Key Locks K1 and K2. The selector
Switch in the “CLOSE” position allows the execution of a remote
“CLOSE” command. The “OPEN” function is disabled. Conversely,
the selector switch in the “OPEN” position allows the execution of a
remote “OPEN” command. The “CLOSE” function is disabled,
assuming all other interlocks would permit the operation.
Figure 2.3.6
Selector Switch
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3.0 OPERATION
3.1 SAFE PRACTICES
The G&T Device is a safety-related device. It must be recognized that improper use can result in death,
serious personal injury, or property damage. That is why it is important that the user develop specific and safe
operating procedures for its use.
The following general safe practices are recommended:
1. The device cannot be stored in a VAC CLAD-W breaker compartment. It can only be stored in
its storage compartment.
2. Store the device in a clean, dry area free from dust, dirt, moisture, etc.
3. Keep all insulating surfaces, which include primary support insulation and insulation barriers,
clean and dry.
4. Check all primary circuit connections to make certain that they are clean and tight.
5. Permit only authorized trained personnel to use this device.
6. Take extreme care while using this device to avoid contacting “Live” or “Hot” (energized)
terminals.
7. Do not remove the device front panel while using this device.
8. Always “CLOSE” the grounding breaker electrically from the farthest distance with the remote
control switch.
9. Check for dielectric integrity at 15KV AC across the terminals to ground with the grounding
breaker “OPEN”.
3.2 (RESERVED FOR FUTURE VARIATIONS)
WARNING
Improper use can result in death, serious
personal injury, or property damage.
CAUTION
The device cannot be stored in VAC CLAD-W breaker
compartment. It can only be stored in its storage compartment.
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Typical procedures for use of this G & T Device are as follows:
3.3 APPLYING GROUNDS TO THE POWER CIRCUIT
1. Open the circuit breaker and remove it from its compartment. Refer to circuit breaker instruction
manual for instructions on how to install/remove the circuit breaker from its compartment. G & T
device is handled in the manner similar to the handling of the circuit breaker.
2. The Key KU, which is used to start the grounding and testing operations, is obtained from the
Lock Box on the premises.
3. Key KU is inserted into Key Lock K1 and is rotated. See Figure 3.3.1. The switch which is
associated with Key Lock K1 opens. The G&T Device’s “CLOSE” circuit is electrically disabled.
Key KU has electrically locked the G&T Device “OPEN” and is held captive. Key KB is now
available in Key Lock K1.
4. Key KB is removed from Key Lock K1 and is inserted into Key Lock K2 and Key KC is rotated.
See Figures 3.3.2. and 3.3.3. (The G&T Device is already mechanically locked “OPEN” by
virtue of the fact that access to manually charge the closing springs and the manual “CLOSE”
button is denied.) Key KB is now held captive in Key Lock K2 and Key KC is now available.
Figure 3.3.1 Figure 3.3.2 Figure 3.3.2
Insert Key KU in Key Lock K1 and Remove Key KB from Lock K1 Insert Key KB in Key Lock K2 and
Rotate
Rotate Key KC
5. Key KC is removed from Key Lock K2 and is inserted into Key Lock K3 and is rotated. See
Figures 3.3.4 and 3.3.5. With the lock bolt retracted, the interlock slider can now be moved to
the right releasing the levering latch handle and eliminating the interferences which prevent
installation in the cell. See Figure 3.3.6
Figure 3.3.4 Figure 3.3.5 Figure 3.3.6
Remove Key KC from Insert Key KC in Lock K3 Levering Latch Handle is
Key Lock K2 and Rotate Released
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6. Lift the levering latch handle
and push the device to the
“Test” position as indicated by
the crisp clicking sound of the
levering latch engaging the
levering nut. See Figure
3.3.7.
7. Using the breaker levering
crank, lever the G&T Device
to the “Connected” position as
indicated by the red flag
Figure 3.3.7 Figure 3.3.8
appearing in front of and
G&T Device Rolled in to G&T Device Levered in to the
under the levering crank.
Lower Compartment Rails “Connected” Position
See Figure 3.3.8.
If you have code plate interference, see Appendices E, F & G.
8. The K3 interlock is moved
back to the left to block the levering latch handle and allow the interference hook to engage the
racking mechanism. Note that the latch handle must be pulled forward to allow the blocking
plate on the slider to pass over the latch handle. See Figure 3.3.9. Key KC is rotated in Key
Lock K3. The levering in screw is made inoperable, locking the G&T Device in the “Connected”
position in the breaker compartment.
9. Key KC is removed from Key Lock K3 and is inserted into Key Lock K2 and is rotated. See
Figures 3.3.10 and 3.3.11. Key KC is now held captive in Key Lock K2 and Key KB is now
available.
Figure 3.3.9 Figure 3.3.10 Figure 3.3.11
Levering Device Locked Remove Key KC from Insert Key KC in Key Lock K2
Key Lock K3 and Rotate
10. Remove key KB from Key
Lock K2. Insert it into Lock
K1. Then rotate KU.
See Figures 3.3.12
and 3.3.13. The DP/ST
switch which is associated
with Key Lock K1 closes. The
G&T Device’s “CLOSE”
circuit is electrically enabled.
Figure 3.3.12 Figure 3.3.13
Remove Key KB from Insert Key KB in Lock K1
Key Lock K2 and Rotate KU
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11. Verify that the three position
“OPEN/OFF/CLOSE”
Selector Switch on the front
of the G&T Device is in the
“OFF” position. See Figure
3.3.14.
12. The umbilical cord plug of
the Remote Operating
Station is inserted into the
Figure 3.3.14 Figure 3.3.15
receptacle on the front of the
Verify that the Selector Switch is Insert Remote Operating
G&T Device. See Figure
in the Off Position Station Plug
3.3.15. The Remote
Operating Station consists of
“OPEN” and “CLOSE”
pushbutton switches.
13. The three position “OPEN/
OFF/CLOSE” Selector
Switch is then moved from
the “OFF” position to the
“CLOSE” position. See
Figure 3.3.16.
Figure 3.3.16 Figure 3.3.17
14. Use the Remote Operating
Turn selector switch to Push “Close” Pushbutton
Station to “CLOSE” the G&T
Close Position
Device via the “CLOSE”
pushbutton switch from the safest distance. See Figure 3.3.17.
15. Place the “OPEN/OFF/CLOSE” Selector Switch in the “OFF” position. Remove the umbilical
cord plug of the Remote Operating Station from the G&T Device. See Figures 3.3.18 and
3.3.19.
16. Key KU is rotated in Key Lock K1 to electrically lock the G&T Device in the “CLOSE” position
by electrically disabling the G&T Device’s “OPEN” circuit. See Figure 3.3.20.
17. Key KB is removed from Key Lock K1 and is inserted into Key Lock K4. See Figures 3.5.1 and 3.5.2.
18. Since the G&T device is currently “CLOSED”, the “Closed Locking Device” is free to be moved to the
Right. The hole in the “Closed Locking Device” is aligned with the Key Lock K4 bolt opposite it.
19. Key KD is rotated in Key Lock K4 holding the “Closed Locking Device” in the secured “CLOSED” position.
See Figure 3.5.3. A position interlock switch, used with the “Closed Locking Device,” has disabled the
“OPEN” circuit. Access to the manual “OPEN” pushbutton on the front of the G&T Device has been
Blocked by the movement of the “Closed Locking Device”. Key KD is now available to be placed in the
Lock Box to prevent the G & T device from being opened.
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Figure 3.3.18 Figure 3.3.19 Figure 3.3.20
Turn Selector Switch to the Remove Remote Operating Rotate Key KU and Remove
Off Position Station Plug Key KB from Key Lock K1
3.4 REMOVING GROUNDS FROM THE POWER CIRCUIT
1. The Key KB, which is used to start the process of removing the
grounds from the incoming feeder, is obtained from Key Lock K4.
2. Key KB is inserted into Key Lock K1 and Key KU is rotated. See
Figure 3.4.1. The switch which is associated with Key Lock K1
closes. The G&T Device’s “OPEN” circuit is electrically enabled.
3. Verify that the three position “OPEN/OFF/CLOSE” Selector
Switch on the front of the G&T Device is in the “OFF” position.
Figure 3.4.1
See Figure 3.4.2.
Insert Key KB in Key Lock K1 and
Rotate Key KU
4. The umbilical cord plug of
the Remote Operating
Station is inserted into the
receptacle on the front of the
G&T Device. See Figure
3.4.3. The Remote
Operating Station consists of
“OPEN” and “CLOSE”
pushbutton switches.
5. The three position “OPEN/
Figure 3.4.2
Figure 3.4.3
OFF/CLOSE” Selector
Verify that the Selector Switch is in Insert Remote Operating
Switch is then moved from
the Off Position Station Plug
the “OFF” position to the
“OPEN” position. See Figure
3.4.4.
6. Use the Remote Operating
Station to “OPEN” the G&T
Device via the “OPEN”
pushbutton switch from the
safest distance. See Figure
3.4.5.
7. Place the “OPEN/OFF/
Figure 3.4.4 Figure 3.4.5
CLOSE” Selector Switch in
Turn Selector Switch to the Push “Open” Pushbutton
the “OFF” position. See
Open Position
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Figure 3.4.6. Remove the
umbilical cord plug of the
Remote Operating Station
from the G&T Device. See
Figure 3.4.7.
Figure 3.4.6 Figure 3.4.7
Turn the Selector Switch to the Remove Remote Operating
Off Position Station Plug
8. Key KU is rotated in Key Lock K1. The switch which is associated with Key Lock K1 opens. The
G&T Device’s “CLOSE” circuit is electrically disabled. Key KU has electrically locked the G&T
Device “OPEN” and is held captive. Key KB is now available in Key Lock K1.
9. Key KB is removed from Key
Lock K1 and is inserted into
Key Lock K2 and Key KC is
rotated. See Figures 3.4.8
and 3.4.9. (The G&T
Device already mechanically
locked “OPEN” by virtue of
the fact that it is not possible
for the operator to manually
charge the closings springs
and manually “CLOSE” the
Figure 3.4.8 Figure 3.4.9
device to ground). Key KB is
Rotate Key KU and Remove Insert Key KB in Key Lock K2 and
now held captive in Key Lock
Key KB from Key Lock K1 Rotate Key KC
K2 and KC is now available.
10. Key KC is removed from Key Lock K2 and is inserted into Key Lock K3 and is rotated. See
Figures 3.4.10 and 3.4.11. With the lock bolt retracted the interlock can now be moved to the
right releasing the levering latch handle and also freeing the levering in screw. See Figure 3.4.12.
Figure 3.4.10 Figure 3.4.11 Figure 3.4.12
Remove Key KC from Key Lock K2 Insert Key KC in Key Lock K3 Key KC is Rotated in Key Lock K3
To unlock the levering latch handle
And racking screw
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11. Using the breaker levering crank, lever the G&T Device out to the
“Test” position. See Figure 3.4.13.
12. Align and securely latch the dockable dolly (If applicable)
marked “FOR USE
WITH G&T DEVICE ONLY” to the extension rails.
Figure 3.4.13
G&T Device Levered Into
The Test Position
13. Disengage the levering latch
by lifting the handle on the
G&T Device and pulling the
G&T Device out of the cell
on to its dockable dolly
(If applicable). See
Figure 3.4.14.
14. The K3 interlock is moved to
the left to engage the levering
latch handle. Note that
Figure 3.4.15
the latch handle must be
Rotate and Remove Key KC From Key Lock K3
pulled forward to allow the
blocking plate on the slider to
pass above the latch handle.
Key KC is rotated in Key
Figure 3.4.14
Lock K3. See Figure 3.4.15.
Remove G&T Device From Breaker Cell
15. Key KC is removed from Key
Lock K3 and is inserted into
Key Lock K2 and is rotated. See Figure 3.4.16. Key KC is now
held captive in Key Lock K2 and Key KB is now available.
16. Key KB is removed from Key Lock K2 and is inserted into Key
Lock K1 and Key KU is rotated. See Figures 3.4.17 and 3.4.18.
Figure 3.4.16
The switch which is associated with Key Lock K1 closes.
Insert Key KC into Key lock K2 and Rotate
17. Key KU is removed from Key Lock K1 and is locked in the Lock Box on the premises.
See Figure 3.4.19.
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Figure 3.4.17 Figure 3.4.18 Figure 3.4.19
Remove Key KB from Key Lock K2 Insert Key KB in Key Lock K1 and Rotate Key KU Remove Key KU from Key
Lock K1
3.5 PROCEDURE FOR INSTALLING TEST PROBES FOR TESTING OF THE
POWER CIRCUIT
Test Probes may only be installed with the G&T Device installed and closed so that the power
circuit is grounded. To accomplish this, follow the instructions provided in Section 3.3 APPLYING
GROUNDS TO THE POWER CIRCUIT. At the completion of the grounding sequence, the Test
Probes are installed and the grounding breaker is opened to allow testing using the following
procedure:
1. Obtain Key KD from the
Lock Box and insert
Into Key Lock K5 and is
Rotated. See Figure 3.5.5
The shutter
Covering the test ports is
Unlocked. Key KD is held
Captive when the test ports
Are allowed to to open. See
Figure 3.5.6.
Figure 3.5.1 Figure 3.5.2
Rotate Key KU and Remove Key KB Insert Key KB in Key Lock K4
from Key Lock K1
Figure 3.5.3
“Closed Locking Device” Moved to the Right
and Locked by Rotating Key KD
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Figure 3.5.5 Figure 3.5.6
Insert Key KD in Key Lock K5 and Rotate Open Test Port Shutter
2. The Test Probes are
inserted into the Test Ports
and the shutter is moved all
the way to the left. The
Test Probes are secured in
the Test Ports by the
“detent” position of the
shutter. See Figure 3.5.7.
Figure 3.5.7 Figure 3.5.8
3. Key KD is rotated in Key
Probes Installed and Locked in Place Shutter is Locked with Key Lock K5
Lock K5. The shutter is
locked in place. See Figure 3.5.8. Key KD is now available in
Key Lock K5.
4. Key KD is removed from Key Lock K5 and is inserted into Key
Lock K4 and is rotated. See Figure 3.5.9. The “Closed Locking
Device” is released and is spring returned to its left most resting
place. The position interlock switch, used with the “Closed
Locking Device”, has enabled the “OPEN” circuit. Key KB is
now available in Key Lock K4.
Figure 3.5.9
Insert Key KD in Key Lock K4 and Rotate
5. Key KB is removed from Key Lock K4 and is inserted into Key
Lock K1 and Key Lock KU
is rotated. See Figures
3.5.10 and 3.5.11. The
switch which is associated
with Key Lock K1 closes.
The G&T Device’s “OPEN”
circuit is electrically
enabled.
6. Verify that the three
Figure 3.5.10 Figure 3.5.11
position “OPEN/OFF/
Remove Key KB from key Lock K4 Insert Key KB in Key Lock K1 and Rotate Key KU
CLOSE” Selector Switch on
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the front of the G&T Device
is in the “OFF” position.
See Figure 3.5.12.
7. The umbilical cord plug of
the Remote Operating
Station is inserted into the
receptacle on the front of
the G&T Device. See
Figure 3.5.13. The Remote
Operating Station consists
of “OPEN” and “CLOSE”
pushbutton switches.
Figure 3.5.12 Figure 3.5.13
Verify that the selector Switch is in the Off Position Insert Remote Operating Station Plug
8. The three position “OPEN/OFF/CLOSE” Selector Switch on the
front of the G&T Device is moved from the “OFF” to the “OPEN”
position. See Figure 3.5.14.
9. Use the Remote Operating Station to “OPEN” the G&T Device via
the “OPEN” pushbutton switch from the safest distance. See
Figure 3.5.15.
10. Place the “OPEN/OFF/CLOSE” Selector Switch in the “OFF”
position. The Remote Operating Station is unplugged from the
G&T Device. See Figures 3.5.16 and 3.5.17.
Figure 3.5.14
Turn Selector Switch to “Open” Position
Figure 3.5.15 Figure 3.5.16 Figure 3.5.17
Push “Open” Pushbutton Turn Selector Switch to “Off” Position Remove Remote Operating Station Plug
11. Key KU is rotated in Key Lock K1. The G&T Device is locked in the “OPEN” position by
electrically disabling the G&T Device’s “CLOSE” circuit. Key KB is now available in Key Lock K1.
Instruction Book
Page
20
IB131007EN For more information visit: www.Eaton.com IB131007EN
12. Key KB is removed from Key Lock K1 and is locked in the
Lock Box on the premises. See Figure 3.5.18
13. The G&T Device is now available for testing.
Figure 3.5.18
Rotate Key KU and Remove Key KB from
Key Lock K
3.6 PROCEDURE FOR REMOVING THE TEST PROBES AFTER TESTING
This procedure covers removal of the Test Probes at the completion of testing and returning the
Power circuit to a grounded condition.
1. The Key KB, which is used to start the process of removing the Test Probes, is obtained from the
Lock Box on the premises.
2. Key KB is inserted into Key
Lock K1 and Key KU is
rotated. See Figure 3.6.1.
The switch associated with
Key Lock K1 closes. The
G&T Device’s “CLOSE”
circuit is electrically enabled.
3. Verify that the three position
“OPEN/OFF/CLOSE”
Selector Switch on the front
Figure 3.6.1 Figure 3.6.2
of the G&T Device is in the
Insert Key KB in Key Lock K1 and Rotate Key KU Verify that the Selector Switch is in the “
“OFF” position. See Figure
OFF” Position
3.6.2.
4. The umbilical cord plug of the
Remote Operating Station is
inserted into the receptacle
on the front of the G&T
Device. See Figure 3.6.3.
5. The three position “OPEN/
OFF/CLOSE” Selector Switch
is then moved from the “OFF”
position to the “CLOSE”
Figure 3.6.3 Figure 3.6.4
position. See Figure 3.6.4.
Insert the Remote Operating Station Plug Turn the Selector Switch
to the “Close” Position
6. Use the Remote Operating Station to “CLOSE” the G&T Device via the “CLOSE” pushbutton
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