Instruction Book IB182312EN
50/75/150 VCP-W
Selectable Ground and Test Device
150 VCP-W-SGT
June 2016
Supersedes October 2015
Effective
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Instruction Book IB182312EN June 2016 www.eaton.com
50/75/150 VCP-W
Selectable Ground and Test Device
WARNING
IMPROPERLY INSTALLING OR MAINTAINING THESE PRODUCTS CAN
RESULT IN DEATH, SERIOUS PERSONAL INJURY OR PROPERTY DAMAGE.
READ AND UNDERSTAND THESE INSTRUCTIONS BEFORE ATTEMPTING
ANY UNPACKING, ASSEMBLY, OPERATION OR MAINTENANCE OF THE
SELECTABLE GROUND AND TEST DEVICES.
INSTALLATION OR MAINTENANCE SHOULD BE ATTEMPTED ONLY
BY QUALIFIED PERSONNEL. THIS INSTRUCTION BOOK SHOULD NOT
BE CONSIDERED ALL INCLUSIVE REGARDING INSTALLATION OR
MAINTENANCE PROCEDURES. IF FURTHER INFORMATION IS REQUIRED,
YOU SHOULD CONSULT EATON’S ELECTRICAL SERVICES & SYSTEMS.
THE SELECTABLE GROUND AND TEST DEVICES DESCRIBED IN THIS BOOK
ARE DESIGNED AND TESTED TO OPERATE WITHIN THEIR NAMEPLATE
RATINGS. OPERATION OUTSIDE OF THESE RATINGS MAY CAUSE THE
EQUIPMENT TO FAIL, RESULTING IN DEATH, BODILY INJURY AND
PROPERTY DAMAGE.
ALL APPLICABLE CODES, SAFETY STANDARDS AND/OR REGULATIONS
RELATED TO THIS TYPE OF EQUIPMENT MUST BE STRICTLY FOLLOWED.
THESE SELECTABLE GROUND AND TEST DEVICES ARE DESIGNED TO
BE INSTALLED PURSUANT TO THE AMERICAN NATIONAL STANDARDS
INSTITUTE (ANSI). SERIOUS INJURY, INCLUDING DEATH, CAN RESULT
FROM FAILURE TO FOLLOW THE PROCEDURES OUTLINED IN THIS
MANUAL.
DISCLAIMER OF WARRANTIES AND LIMITATION OF LIABILITY
The information, recommendations, descriptions and safety notations in this document are based on Eaton’s experience and judgment and
may not cover all contingencies. If further information is required, an Eaton sales office should be consulted. Sale of the product shown in
this literature is subject to the terms and conditions outlined in appropriate Eaton selling policies or other contractual agreement between
Eaton and the purchaser.
THERE ARE NO UNDERSTANDINGS, AGREEMENTS, WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING WARRANTIES OF FITNESS
FOR A PARTICULAR PURPOSE OR MERCHANTABILITY, OTHER THAN THOSE SPECIFICALLY SET OUT IN ANY EXISTING CONTRACT
BETWEEN THE PARTIES. ANY SUCH CONTRACT STATES THE ENTIRE OBLIGATION OF EATON. THE CONTENTS OF THIS DOCUMENT
SHALL NOT BECOME PART OF OR MODIFY ANY CONTRACT BETWEEN THE PARTIES.
In no event will Eaton be responsible to the purchaser or user in contract, in tort (including negligence), strict liability or other-wise for any
special, indirect, incidental or consequential damage or loss whatsoever, including but not limited to damage or loss of use of equipment,
plant or power system, cost of capital, loss of power, additional expenses in the use of existing power facilities, or claims against the
purchaser or user by its customers resulting from the use of the information, recommendations and descriptions contained herein. The
information contained in this manual is subject to change without notice.
This product was manufactured by Eaton at the Power Breaker
Center (PBC): 310 Maxwell Avenue, Greenwood, SC 29646.
All possible contingencies which may arise during installation,
operation or maintenance, and all details and variations of this
equipment do not purport to be covered by these instructions. If
further information is desired by purchaser regarding his particular
installation, operation or maintenance of particular equipment,
contact an Eaton representative.
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Instruction Book IB182312EN June 2016 www.eaton.com
50/75/150 VCP-W
Selectable Ground and Test Device
Table of Contents
SECTION 1: INTRODUCTION 4
1.1 AVAILABLE 150 VCP-W SELECTABLE
GROUND AND TEST DEVICES 4
SECTION 2: SAFE PRACTICES 6
SECTION 3: RECEIVING, HANDLING, AND STORAGE 7
3.1 RECEIVING 7
3.2 HANDLING 7
3.3 STORAGE 8
3.4 APPROXIMATE WEIGHT BY TYPE 8
SECTION 4: DESCRIPTION AND OPERATION 11
4.1 INSULATING BARRIERS 11
4.2 BUSHINGS AND DISCONNECTING CONTACT ASSEMBLIES 11
4.3 GROUNDING CONTACTS 11
4.4 BREAKER-CELL CODING PLATES 11
4.5 CELL POSITION DESCRIPTION 11
4.6 DEVICE AMPERAGE CONVERSION PROCEDURE 13
SECTION 5: INSTALLATION & INSPECTION 14
5.1 EXAMINATION FOR DAMAGE 14
5.1.1 NAMEPLATE VERIFICATION 14
5.2 OPERATING PROCEDURE 14
5.5 INSERTION PROCEDURE 16
5.5 REMOVAL PROCEDURE 16
SECTION 6: INSPECTION AND MAINTENANCE 18
6.1 INTRODUCTION 18
6.2 FREQUENCY OF INSPECTION 18
6.3 INSPECTION AND MAINTENANCE PROCEDURES 18
6.4 INSULATION INTEGRITY CHECK 18
SECTION 7: REPLACEMENT OF COMPONENTS 19
7.1 GENERAL 19
7.1.1 ORDERING INSTRUCTIONS 19
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Instruction Book IB182312EN June 2016 www.eaton.com
50/75/150 VCP-W
Selectable Ground and Test Device
SECTION 1: INTRODUCTION
The purpose of this book is to provide instructions for receiving and
handling, storage, installation, operation and maintenance of 150
VCP-W Selectable Ground and Test Devices. This selectable ground
and test device is designed to be used in existing Westinghouse,
Cutler-Hammer, or Eaton Type VCP-W metal-clad switchgear.
Type VCP-W selectable ground and test devices are designed for
insertion into the breaker compartment to gain access to the primary
stationary contacts. It provides convenient means to:
1. Ground a circuit for maintenance work;
2. Apply potential for testing; and/or,
3. Access both bus and line circuits for “phasing out” tests.
4. Depending on customer specification, key interlocks may be
deleted. Line/Load and Phase labeling may be optionally provided.
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.
WARNING
SATISFACTORY PERFORMANCE OF SELECTABLE GROUND AND TEST
DEVICES IS CONTINGENT UPON PROPER APPLICATION, CORRECT
INSTALLATION AND ADEQUATE MAINTENANCE. THIS INSTRUCTION
BOOK MUST BE CAREFULLY READ AND FOLLOWED IN ORDER TO OBTAIN
OPTIMUM PERFORMANCE FOR LONG USEFUL LIFE OF THE SELECTABLE
GROUND AND TEST DEVICES.
THESE SELECTABLE GROUND AND TEST DEVICES ARE PERSONNEL
PROTECTIVE DEVICES, AS SUCH, THEY ARE MAXIMUM RATED DEVICES.
THEREFORE, THEY SHOULD NOT UNDER ANY CIRCUMSTANCES BE
APPLIED OUTSIDE THEIR NAMEPLATE RATINGS.
1.1 AVAILABLE 150 VCP-W SELECTABLE GROUND AND
TEST DEVICES
Refer to Table 1.
Table 1. 150 VCP-W Selectable Ground and Test Device Availability and Interchangeability
Nominal Voltage Class
(kV)
Existing Breaker MVA
Ratings
Sized For Circuit
Breaker Compartment
(Amps)
Rated Short-Time Current
kA / RMS
Symmetrical
Rated Momentary Current
kA / Peak
BIL Capability
(kV)
5 36 / 49 1200 / 2000 / 3000 50 97 / 132 60
7.5 41 1200 / 2000 / 3000 50 111 95
15 23 / 41 / 50 1200 / 2000 / 3000 50 62 / 109 / 130 95
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Instruction Book IB182312EN June 2016 www.eaton.com
50/75/150 VCP-W
Selectable Ground and Test Device
Table 2. VCP-W Selectable Ground and Test Device Dimensions
Breaker Type
Sized For
Circuit Breaker
Compartment
(Amps) A B C D E F G H I J K
150 VCP-W 500 Dual 1200 / 2000 28.50 26.76 10.00 27.81 12.00 14.13 20.88 24.63 2.25 27.80 29.55
150 VCP-W 500 Dual 3000 28.50 26.76 10.00 27.96 12.00 14.13 20.88 24.63 2.25 27.80 29.55
D
H
GI
J
I
E
F
B
C C
A
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Instruction Book IB182312EN June 2016 www.eaton.com
50/75/150 VCP-W
Selectable Ground and Test Device
SECTION 2: SAFE PRACTICES
Selectable Ground and Test Devices are designed with several built-in
interlocks and safety features to provide safe and proper operating
sequences.
DANGER
TO PROTECT THE PERSONNEL ASSOCIATED WITH INSTALLATION,
OPERATION, AND MAINTENANCE OF THE SELECTABLE GROUND AND TEST
DEVICES, THE FOLLOWING PRACTICES MUST BE FOLLOWED:
•
Only qualified persons, as defined in the National Electrical
Safety Code, who are familiar with the installation and
maintenance of medium voltage circuits and equipment,
should be permitted to work on the selectable ground and
test device.
•
Read these instructions carefully before attempting any
installation, operation or maintenance of the selectable
ground and test device.
•
Always remove the selectable ground and test device from
the enclosure before performing any maintenance on the
device. Failure to do so could result in electrical shock leading
to death, severe personnel injury or property damage.
•
Do not leave the selectable ground and test device in an
intermediate position in the cell. Always have the selectable
ground and test device either in the DISCONNECT or
CONNECTED position. Failure to do so could result in a
flash over and possible death, personnel injury or property
damage.
•
Keep all insulating surfaces, which include primary support
insulation and insulation barriers, clean and dry.
•
Check all primary circuit connections to make certain they are
clean and tight.
•
Take extreme care while using this device to avoid contacting
“live” or “hot” (energized) terminals.
•
These selectable ground and test devices are equipped with
safety interlocks. Do not defeat them. This may result in
death, bodily injury or equipment damage.
•
Correctly identify LINE and BUS terminals for the breaker
compartment before using this device. Remember that line
connection may be on lower terminals when installed in
upper compartment of 2-high switchgear.
•
Store the device in a clean, dry area free from dust, dirt,
moisture, etc.
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Instruction Book IB182312EN June 2016 www.eaton.com
50/75/150 VCP-W
Selectable Ground and Test Device
SECTION 3: RECEIVING, HANDLING, AND
STORAGE
Selectable ground and test (SG&T) devices are subjected to
complete factory production tests and inspection before being
packed. They are shipped in packages designed to provide maximum
protection to the equipment during shipment and storage and at the
same time to provide convenient handling.
3.1 RECEIVING
Until the selectable ground and test device is ready to be delivered
to the switchgear site for installation, DO NOT remove it from the
shipping crate. If the selectable ground and test device is to be
placed in storage, maximum protection can be obtained by keeping
it in its crate.
Upon receipt of the equipment, inspect the crates for any signs of
damage or rough handling. Open the crates carefully to avoid any
damage to the contents. Use a nail puller rather than a crow bar
when required.
When opening the crates, be careful that any loose items or
hardware are not discarded with the packing material. Check the
contents of each package against the packing list. Examine the
selectable ground and test device for any signs of shipping damage
such as broken, missing or loose hardware, damaged or deformed
insulation and other components. File claims immediately with the
carrier if damage or loss is detected and notify the nearest Eaton’s
Electrical Services & System office.
Tools and Accessories
Racking Handle:
The racking handle is used to drive the racking
mechanism which moves the SG&T device into and out of the
cell. This racking handle is the same one provided with the original
VCP-W Vacuum Circuit Breaker and therefore is not provided as part
of the SG&T device. (Figure 3.1.1)
Figure 3.1.1. Racking Handle
3.2 HANDLING
WARNING
DO NOT USE ANY LIFTING DEVICE AS A PLATFORM FOR PERFORMING
MAINTENANCE, REPAIR OR ADJUSTMENT. THE SELECTABLE GROUND
AND TEST DEVICE MAY SLIP OR FALL CAUSING SEVERE PERSONAL
INJURY. ALWAYS PERFORM MAINTENANCE, REPAIR AND ADJUSTMENTS
ON A WORKBENCH CAPABLE OF SUPPORTING THE SELECTABLE GROUND
AND TEST DEVICE TYPE.
VCP-W selectable ground and test device shipping containers are
designed to be handled by a forklift truck. If containers must be
skidded for any distance, it is preferable to use roller conveyors or
individual pipe rollers.
Once a SG&T device has been inspected for shipping damage, it is
best to return it to its original shipping crate until it is ready to be
installed in the Metal-Clad Switchgear.
When a selectable ground and test device is ready for installation, a
lifting harness in conjunction with an overhead lift or portable floor
lift can be used to move a SG&T device. This could be preferable to
rolling the SG&T device on the floor using self-contained wheels.
If the SG&T device is to be lifted, position the lifting device (lifting
straps should have at least a 1600 lb capacity) over the SG&T. Stand
a safe distance away from the device while lifting and moving.
Figure 3.2. Lifting 150 VCP-W-SG&T
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Instruction Book IB182312EN June 2016 www.eaton.com
50/75/150 VCP-W
Selectable Ground and Test Device
3.3 STORAGE
If the selectable ground and test device is to be placed in storage,
maximum protection can be obtained by keeping it in the original
shipping crate. Before placing it in storage, checks should be made
to make sure that the SG&T device is free from shipping damage
and is in satisfactory operating condition.
Outdoor storage is NOT recommended. If unavoidable, the outdoor
location must be well drained and a temporary shelter from sun,
rain, snow, corrosive fumes, dust, dirt, falling objects, excessive
moisture, etc. must be provided. Container should be arranged to
permit free circulation of air on all sides and temporary heaters
should be used to minimize condensation. Moisture can cause
rusting of metal parts and deterioration of high voltage insulation.
A heat level of approximately 400 watts for each 100 cubic feet of
volume is recommended with the heaters distributed uniformly
throughout the structure near the floor.
Indoor storage should be in a building with sufficient heat and
circulations to prevent condensation. If the building is not heated,
the same general rule for heat as for outdoor storage should be
applied.
3.4 APPROXIMATE WEIGHT BY TYPE
Refer to Table 3.
Table 3. Approximate Weight by Type
Type Amperes LBs
50/75/150 VCP-W-SGT 50 1200 / 2000 / 3000 316
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Instruction Book IB182312EN June 2016 www.eaton.com
50/75/150 VCP-W
Selectable Ground and Test Device
Figure 3.3.a. Front External View of 150 VCP-W SG&T Device
3
2
1
8
5
4
7
6
Front External View (150 VCP-W SG&T Shown)
1 Lock-out / Tag-out Ring 4 Kirk
TM
Key Interlock* 7 Lift / Pull Handle
2 Friction Hinge 5 Spring Loaded Kirk
TM
Lock Bolt* 8 Ground Contact
3 Selector Blade Latch Ring 6 Code Plate
ote:N * May be deleted at option of end user.
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Instruction Book IB182312EN June 2016 www.eaton.com
50/75/150 VCP-W
Selectable Ground and Test Device
Figure 3.3.b. Rear External View of 150 VCP-W SG&T Device
Back External View (150 VCP-W SG&T Shown)
1 Lifting Point 2 Primary Disconnects (1200A / 2000A Shown)
2
1
1
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Instruction Book IB182312EN June 2016 www.eaton.com
50/75/150 VCP-W
Selectable Ground and Test Device
SECTION 4: DESCRIPTION AND OPERATION
The SG&T is a draw out device that can be inserted into a circuit
breaker cubicle in the same manner as the 150 VCP-W Circuit
Breaker. It can be ordered as a single terminal device or a double
terminal selectable ground and test device. Each terminal is isolated
from each other and the ground bus connections by insulating
barriers. The upper and lower terminals are accessible upon opening
the respective front hinged door. The ground connection is easily
accessible on the lower front section of the device (Figure 3.3.a).
Interchangeable primary disconnects allow the SG&T device to be
converted between the available amperes for this device. (1200A /
2000A and 3000A)
WARNING
IT IS MOST IMPORTANT THAT THE LOAD OR LINE TERMINALS BE
CORRECTLY IDENTIFIED FOR EACH COMPARTMENT BEFORE USING THIS
DEVICE.
Type 150 VCP-W Selectable Ground & Test devices are also available
with either the upper or lower terminals only.
4.1 INSULATING BARRIERS
Insulating barriers are GPO-3 glastic material used to isolate the
primary terminals from each other and the ground connections.
4.2 BUSHINGS AND DISCONNECTING CONTACT
ASSEMBLIES
The upper and lower bushings, which are the primary circuit
terminals of the selectable ground and test device, consist of
silver plated insulated conductors. Multiple finger type primary
disconnecting contacts at the ends of the conductors provides
means for connecting and disconnecting the SG&T device to the bus
terminals in the switchgear compartment. (Figure 3.5)
4.3 GROUNDING CONTACTS
The grounding contact is an assembly of spring-loaded fingers,
which ground the device by engaging the switchgear cell grounding
bus when the SG&T device is levered into the “connect” position.
The ground contact is located at the lower section of the device, on
the truck, and visible from the front of the device. (Figure 3.3.a)
4.4 BREAKER-CELL CODING PLATES
NOTICE
CODE PLATES WILL BE SUPPLIED PER SWITCHGEAR REQUIREMENTS AND
THEREFORE AMPERAGE/RATED SHORT-TIME CURRENT ARRANGEMENTS
WILL NOT BE COVERED IN THIS MANUAL. DETAILED INFORMATION
ON THE SPECIFIC CODE PLATE OPTIONS WILL BE PROVIDED WITH THE
CUSTOMER ORDER.
This is a combination of a notched plate in the cell and interference
bars on the breaker, so that only appropriately rated breakers can be
put into the cell (Figure 3.3.a).
WARNING
FOR 1200A/2000A/3000A UNIVERSAL SELECTABLE GROUND & TEST
DEVICES A CODE PLATE HAS BEEN FACTORY INSTALLED TO MATCH THE
RATING OF THE FACTORY-INSTALLED PRIMARY DISCONNECTS. ENSURE
THAT THE CORRECT PRIMARY DISCONNECTS AND CODE PLATES HAVE
BEEN INSTALLED FOR THE CORRECT APPLICATION.
4.5 CELL POSITION DESCRIPTION
Position A: This is the withdrawn position. In the withdrawn position,
the selectable ground and test device is out of the cell. The racking
handle is not required for this position.
Position B: As the SG&T device is pushed into the cell, it will reach a
mechanical stop. This is the “disconnect” position.
Position C: Continue rotating the racking handle until the rotating
handle turns freely, and the SG&T device stops moving. The device
will have reached the “connect” position. (Figure 5.11) Remove the
racking handle.
Figure 4.1. Installed Code Plate (1200A/50kA Unit Shown)
Figure 4.2. Primary Disconnect Installed (3000A)
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Instruction Book IB182312EN June 2016 www.eaton.com
50/75/150 VCP-W
Selectable Ground and Test Device
Figure 4.5. Primary Disconnect Shim Removal (3000A) Figure 4.8. Primary Disconnect Installed (1200A/2000A)
Figure 4.6. Primary Disconnect Installation (1200A/2000A)
Figure 4.4. Primary Disconnect Removal (3000A) Figure 4.7. Primary Disconnect Hardware Installation
(1200A/2000A))
Figure 4.3. Primary Disconnect Hardware Removal (3000A)
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Instruction Book IB182312EN June 2016 www.eaton.com
50/75/150 VCP-W
Selectable Ground and Test Device
4.6 DEVICE AMPERAGE CONVERSION PROCEDURE
The VCP-W-SGT may be optionally provided with interchangeable
primary disconnects. When so equipped, the extra primary
disconnects and code plates are boxed separately.
The primary circuit terminals of the selectable ground and
test device consists of silver plated copper conductors with
interchangeable primary disconnects. The same primary
disconnects are used for 1200 and 2000 ampere applications; the
SG&T must be converted for 3000 ampere SG&T use. Primary
disconnecting contacts are bolted to the lead assemblies; these
primary disconnects are configured to engage the circuit breaker
compartment primary disconnects. It is critical to confirm that
1200/2000 ampere primary disconnects are installed prior to
insertion in 1200/2000 ampere circuit breaker compartments;
likewise for tests in 3000 ampere circuit breaker compartments.
THIS CONVERSION ALSO REQUIRES A CODE PLATE CHANGE
PRIOR TO RACKING THE SG&T INTO ITS CIRCUIT BREAKER
COMPARTMENT. Follow the procedure below to convert from one
primary current design to the other.
a. With the selectable ground and test device located in an
appropriate work area, remove the existing primary disconnects
installed on the SG&T. Retain the hardware for re-use. Figure 4.3.
b. After removing the primary disconnect assembly, locate the
primary disconnects to be installed and install them on the
lead assemblies using the hardware just removed. The primary
disconnects just removed should be properly stored to avoid
potential damage. Figure 4.4.
ote:N Ensure shims are installed as shown in Figure 4.5 for the 3000A
configuration.
c. THE GROUND AND TEST CODE PLATE MUST BE CHANGED AT
THIS TIME. The SG&T device will be blocked from full insertion in
the circuit breaker compartment until the code plate is changed.
The code plate is a mandatory safety feature that must not be
removed and/or discarded.
d. Left hand and right hand code plates are installed on the lower
part of the SG&T frame below ‘C’ phase. The right hand code
plate is mounted adjacent to rail to which the wheels are
attached; the left hand code plate is mounted to the left of the
right hand code plate. The left hand code plate is used for the
continuous current rating, the right hand code plate corresponds
to the short circuit capabilities of the device. Eaton offers many
code plate combinations for accepting or rejecting devices
based on their continuous current rating, short circuit current
rating, speed of contact parting (3-cycle or 5-cycle) and other
classifications; consult your Eaton representative for complete
code plate availability. Table 4.1 provides the code plate
information for 15 kV SG&T devices that have a short time rating
of 50 kA.
Table 4.
Nominal Voltage /
Short Time Rating
Cubicle Current
Rating
Cycle Class Device LH Code LH Style Code
Plate
Device RH Code RH Style Code
Plate
15 / 50 1200 5 K = 1 12000 8061A47H06 10012 8061A42H01
15 / 50 2000 5 K = 1 11000 8061A38H06 10012 8061A42H01
15 / 50 3000 5 K = 1 20000 8061A40H06 10012 8061A42H01
Example: If the SG&T is to be used only in switchgear rated for 48-49 kA, only the Left Hand code plate would be changed to allow insertion of the 1200A,
2000A, or 3000A configured device.
Figure 4.9. 50/75/150 VCP-W with optional LINE/LOAD and
PHASE labels
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Instruction Book IB182312EN June 2016 www.eaton.com
50/75/150 VCP-W
Selectable Ground and Test Device
SECTION 5: INSTALLATION & INSPECTION
WARNING
BEFORE PLACING THE SELECTABLE GROUND AND TEST DEVICE IN
SERVICE, CAREFULLY FOLLOW THE INSTALLATION PROCEDURE BELOW
AND THE SAFE PRACTICES SET FORTH IN SECTION 2. NOT FOLLOWING
THE PROCEDURE MAY RESULT IN INCORRECT SG&T DEVICE OPERATION
LEADING TO DEATH, BODILY INJURY, AND PROPERTY DAMAGE.
When the SG&T device is first used and each time it is used in the
future, it should be carefully examined and checked to make sure it
is operating correctly.
5.1 EXAMINATION FOR DAMAGE
Examine the selectable ground and test device for loose or obviously
damaged parts. Never attempt to install nor operate a damaged
selectable ground and test device.
5.1.1 NAMEPLATE VERIFICATION
Verify the information on the new SG&T device matches the
information on the purchase order. If any discrepancies exist,
notify Eaton’s Electrical Services & Systems for resolution prior to
proceeding.
DANGER
FAILURE TO IDENTIFY THE ENERGIZED TERMINALS INSIDE THE
SWITCHGEAR CIRCUIT BREAKER COMPARTMENT WILL CAUSE DEATH,
SERIOUS INJURY, AND/OR PROPERTY DAMAGE. USE NOT ONLY A
RIGOROUS LOCK-OUT, TAG-OUT SCHEME BUT ALSO LOCALIZED TESTING
WITH APPROVED TESTING PROBES TO CONFIRM THAT THE CIRCUIT TO BE
GROUNDED IS DE-ENERGIZED. CONFIRM THAT FOREIGN POWER SOURCES
ARE NOT BACK-FEEDING INTO THE DE-ENERGIZED BUS.
CAUTION
WHEN THE SELECTABLE GROUND AND TEST DEVICE IS RACKED TO
THE ‘CONNECTED’ POSITION IN THE SWITCHGEAR CIRCUIT BREAKER
COMPARTMENT, THE LINE AND LOAD PRIMARY DISCONNECTS ENGAGE
THE STATIONARY PRIMARIES. IF ONE SET OF PRIMARIES IS ENERGIZED,
IT IS STRONGLY ADVISED THAT THE TERMINAL ACCESS DOOR REMAIN
CLOSED AND LOCKED TO BLOCK ACCESS TO THOSE TERMINALS. THE
KIRK™ LOCKS (WHEN PROVIDED) SHOULD BE INCORPORATED IN A ‘LOCK-
OUT, TAG-OUT’ SCHEME. USE APPROPRIATE LOCKING PROVISIONS TO
PREVENT INADVERTENT ACCESS. THIS SELECTABLE GROUND AND TEST
DEVICE MUST BE OPERATED BY A QUALIFIED OPERATOR USING A WELL
MAINTAINED AND CERTIFIED ‘HOT STICK’.
NOTICE
BECAUSE THERE ARE UNIQUE APPLICATIONS AND A VAST VARIETY OF
POWER SYSTEMS, THE SAFE OPERATING PROCEDURE FOR THE USE OF
THIS SELECTABLE G&T MUST BE DEVELOPED BY THE END USER BEFORE
THE SELECTABLE GROUND AND TEST DEVICE IS INSTALLED IN THE
CIRCUIT BREAKER COMPARTMENT.
5.2 OPERATING PROCEDURE
Please totally familiarize all SG&T users with this operating
procedure prior to inserting the SG&T into the circuit breaker
compartment.
5.2.1 SELECTABLE GROUND AND TEST DEVICE
PREPARATION
Use the following guidelines to prepare the SG&T for insertion in a
circuit breaker compartment.
a. This selectable ground and test device has a hotstick operable
moving blade that is retained in a neutral position between the
upper and lower terminals by a metal retainer. When the latch
ring handles are at a 90 degree angle to the front of the SG&T,
the selector blades are retained in the neutral, parked position.
Confirm that the removable insulating barriers are in place
above and below the selector blades. THIS SG&T MUST BE
INSTALLED IN THE CIRCUIT BREAKER COMPARTMENT WITH
THESE SELECTOR BLADES IN THE NEUTRAL POSITION.
b. For SG&T devices equipped with Kirk™ Locks on the terminal
access doors, use the Kirk™ key provided to release the special
bolt that is held by the Kirk™ locking system. Slide this bolt
from the Kirk™ lock on the SG&T front cover to allow the door
to be opened. The special bolt is retained on the door. See
Figure 5.1.
c. Access the terminal set to be grounded by opening the upper
or lower access door. The access doors have friction-style
hinges that will hold the access door open. (See Figure 5.2).
The tension of these friction hinges may be adjusted using a
Phillips-type screw driver.
d. Locate the three insulating barriers that separate the
neutral position of the selector blades from the terminal set
compartment to be grounded (Figure 5.3). Each of these three
barriers must be removed to allow selector blade to swing to
the terminals to be grounded. These removable barriers should
be safely stored for re-installation before returning the SG&T
to its storage area. These barriers should be removed prior
to installing the SG&T in the circuit breaker compartment and
re-installed after the SG&T has been removed from the circuit
breaker compartment.
e. Close the terminal access door prior to installing the G&T in the
circuit breaker compartment.
f. Install the SG&T in the circuit breaker compartment following
the instructions in paragraph 5.4 of this instruction bulletin.
Use the Personal Protective Equipment (PPE) required by local
authorities having jurisdiction.
5.2.2 SELECTABLE GROUND AND TEST DEVICE
OPERATION
The following procedures are intended to supplement, but not
replace, the site specific instructions developed by authorities having
jurisdiction for use of this selectable ground and test device.
a. Using the appropriate PPE, open the terminal access door for
the terminals to be grounded. Verify that the SG&T terminals
are de-energized. Confirm that the friction hinges of the
terminal access door holds the door open. Start at phase ‘a’,
the pole to the left as one faces the SG&T.
b. The terminal selector blade is moved from the neutral, parked
position by using the hook of a ‘hotstick’ to move the latch
ring to the left slightly to free the blade from its retainer. A
downward force on the latch ring will move the blade to the
lower terminal; upward force on the latch ring will move the
blade to the upper terminal. A mechanism in the blades spreads
them slightly as the latch ring is moved to allow proper blade
engagement with the stationary blades; a clamping and latching
action is applied once the blade engages its mating terminal.
c. Repeat steps ‘b’ for the center pole and the right pole of the
SG&T respectively.
d. With the selector blades fully engaged in the terminals, the
blades are latched so that they cannot swing open in the event
that the circuit is inadvertently energized.
e. With the terminals safely grounded, perform the tasks and tests
required as required. When that work is complete, proceed to
step ‘f’.
f. Use the hotstick to hook the selector blade latch ring on the
selector blade (Figure 5.4 and 5.5). Move the latch ring to move
the blade toward the neutral position between the terminals,
Figure 5.6. Move the blade slightly to the left to clear the
retaining ‘ears’ of the neutral position retainer then allow the
blade to move to the right so that it is retained by the retainer.
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Instruction Book IB182312EN June 2016 www.eaton.com
50/75/150 VCP-W
Selectable Ground and Test Device
Figure 5.3. Selector Blade
Figure 5.6. Utilizing Hot Stick To Engage Selector Blade
Figure 5.5. Selector Blade Disengaged (Shown in Upper Position)
Figure 5.7. Selector Blade Engaged (Shown in Upper Position)
Figure 5.4. Removing Insulating Barrier
Figure 5.2. Access Door Friction Hinge
Figure 5.1. Spring Loaded Kirk
TM
Lock Bolt
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Instruction Book IB182312EN June 2016 www.eaton.com
50/75/150 VCP-W
Selectable Ground and Test Device
g. Repeat steps ‘f’ for the remaining selector blades of the SG&T
terminals.
h. Replace the removable barriers into their respective retainers
before proceeding to the next step (Figure 5.3).
i. Close the terminal set door and secure it with the special
Kirk™ lock bolt (if so equipped.) The Kirk™ Lock bolt is pushed
through the door hasp and into the Kirk™ lock itself. Turn the
Kirk™ key to retain the special bolt and release the Kirk™ key
from the lock cylinder. (Figure 5.1).
j. If the other set of terminals are to be accessed and grounded,
start at ‘a’ above to ground the other set of terminals, if the
SG&T is the six terminal type.
k. When all tests are complete, return the selector blades to the
neutral position and re-install the removable barriers.
l. The SG&T may now be removed from the switchgear circuit
breaker compartment using the removal procedure in Section
5.5.
DANGER
FAILURE TO RETURN THE SELECTABLE BLADES TO THE NEUTRAL
POSITION INSIDE THE SG&T AFTER TESTING IS COMPLETE WILL CAUSE
DEATH, SERIOUS INJURY, AND/OR PROPERTY DAMAGE. A THREE
PHASE BOLTED FAULT WILL OCCUR IF THE CIRCUIT IS INADVERTENTLY
ENERGIZED.
5.5 INSERTION PROCEDURE
CAUTION
THE MAIN SWITCHGEAR BUS AND SWITCHGEAR LOAD CONNECTIONS
ARE CONNECTED WHEN THIS GROUND AND TEST DEVICE IS RACKED TO
THE ‘CONNECTED’ POSITION. ALL PRIMARY CIRCUITS MUST BE FULLY
DE-ENERGIZED, LOCKED AND TAGGED OUT TO PREVENT INADVERTENT
ENERGIZATION. CONFIRM THAT LINE AND LOAD PRIMARY CIRCUITS
ARE NOT BACKFED THROUGH SECONDARY CONTROL CIRCUITS SUCH AS
POTENTIAL TRANSFORMERS OR CONTROL POWER TRANSFORMERS. THIS
GROUND AND TEST DEVICE MUST BE OPERATED ONLY WITH A WELL
MAINTAINED AND CERTIFIED ‘HOT STICK’.
DANGER
FAILURE TO REMOVE ALL SOURCES OF POWER FROM THE CIRCUIT
BREAKER COMPARTMENT BEING GROUNDED WILL RESULT IN PERSONAL
INJURY AND PROPERTY DAMAGE. APPROPRIATE PERSONAL PROTECTIVE
EQUIPMENT (PPE) MUST BE IN PLACE PRIOR TO OPERATING THIS SG&T.
WARNING
EXAMINE THE INSIDE OF THE CELL BEFORE INSERTING THE SG&T FOR
EXCESSIVE DIRT OR ANYTHING THAT MIGHT INTERFERE WITH THE SG&T
TRAVEL.
KEEP HANDS OFF THE TOP EDGE OF THE FRONT BARRIER WHEN PUSHING
A SG&T INTO A CELL. FAILURE TO DO SO COULD RESULT IN BODILY
INJURY, IF FINGERS BECOME WEDGED BETWEEN THE SG&T AND THE
CELL. USE BOTH FULLY OPENED HANDS FLAT ON THE FRONT OF THE SG&T
TO ADVANCE INTO THE STRUCTURE.
If the VCP-W SG&T is being inserted into an upper compartment
or will be positioned in a lower compartment without the use of a
drawout ramp or dockable dolly, the extension rails must first be
put in position. Carefully engage the left and right extension rails to
the fixed structure rails and ensure they are properly seated in place
(Figure 5.9). Once the extension rails are properly in place, the SG&T
can be carefully loaded on the extension rails using an overhead lifter
and lifting yoke. Remove the lifting yoke when the SG&T is securely
seated on the extension rails.
Figure 5.9. Inserting Guide Rails
Figure 5.10. Racking the SG&T Device
Push the SG&T into the compartment until the Disconnect/Test
position is reached as confirmed by a metallic sound of the racking
latch engaging the racking nut (Figures 5.10). Once the SG&T is in
the Disconnect/Test position, the extension rails can be removed.
WARNING
DO NOT USE ANY TOOL OTHER THAN THE RACKING-IN CRANK PROVIDED
TO LEVER THE SG&T FROM TEST OR CONNECTED POSITIONS. CORRECT
OPERATION OF SOME OF THE INTERLOCKS IS DEPENDENT ON USE OF THE
PROVIDED RACKING CRANK. PERSONAL INJURY OR EQUIPMENT DAMAGE
COULD RESULT FROM THE USE A TOOL OTHER THAN THE PROPER
RACKING-IN CRANK.
To move the VCP-W SG&T to the CONNECTED position, engage
the racking-in crank with the structure mounted racking shaft
(Figure 5.10). Turn the racking-in crank in a clockwise direction and
the SG&T will move slowly toward the rear of the structure. When
the SG&T reaches the CONNECTED position (Figure 5.11), it will
become impossible to continue turning the racking-in crank. The
CONNECTED position will also be indicated by a red flag indicator
just below the racking device.
5.5 REMOVAL PROCEDURE
To remove the SG&T device from the CONNECTED position, engage
the racking handle onto the circuit breaker compartment mounted
racking shaft. Turn the racking handle counterclockwise until the
SG&T reaches the ‘disconnect/test’ position. When the ‘disconnect/
test’ position is reached, it will not be possible to turn the racking
handle any further. The ‘disconnect/test’ position is indicated by a
green indicator below the racking device.
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Instruction Book IB182312EN June 2016 www.eaton.com
50/75/150 VCP-W
Selectable Ground and Test Device
Figure 5.11. SG&T Device In Connect Position
Figure 5.12. Removing SG&T using Lift / Pull Handle
To remove the SG&T from the cell, install the extension guide rails.
Pull up on the Lift/Pull Handle as shown in Figure 5.12 then pull the
device out onto the extension rails. Use a lifting yoke and overhead
lifter to remove the SG&T from the extension rails.
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Instruction Book IB182312EN June 2016 www.eaton.com
50/75/150 VCP-W
Selectable Ground and Test Device
SECTION 6: INSPECTION AND
MAINTENANCE
6.1 INTRODUCTION
DANGER
DO NOT WORK ON A SELECTABLE GROUND AND TEST DEVICE IN THE
“CONNECTED” POSITION.
DO NOT DEFEAT ANY SAFETY INTERLOCKS.
FAILURE TO FOLLOW ANY OF THESE INSTRUCTIONS MAY CAUSE DEATH,
SERIOUS BODILY INJURY, OR PROPERTY DAMAGE. SEE SECTION 2 - SAFE
PRACTICES FOR MORE INFORMATION.
6.2 FREQUENCY OF INSPECTION
Inspect the selectable ground and test device at least once a year or
before each use, especially in a severe service condition.
6.3 INSPECTION AND MAINTENANCE PROCEDURES
Insulation
Visually inspect all insulating barriers. Ensure that there is not
dirt visible on the surface of any of the barriers. If dirt is found,
clean with a lint-free cloth. If a solvent is required to cut dirt, used
Stoddard’s Solvent (Eaton part number 55812CA) or commercial
equivalent.
Hardware
Visually inspect all hardware. Replace any damaged or missing
hardware with parts equivalent to those provided with the selectable
ground and test device.
Power Frequency Withstand Test
Individually energize each terminal (without cables, but with
insulating barriers) with the frame and device ground connection
system and all other terminals grounded. See Section 6-4 for
procedure.
6.4 INSULATION INTEGRITY CHECK
A sinusoidal AC voltage shall have a crest value of no less than 1.414
times the rated power frequency withstand voltage value specified,
and shall be applied to each terminal as specified in Section 6.3. The
frequency shall be within +/- 20% of the rated power frequency. For
5kV, the test voltage shall be gradually increased from zero to 15 kV
rms and held for 1 minute without flashover. For 7.5kV and 15kV, the
test voltage shall be gradually increased from zero to 27kV rms and
held for 1 minute without flashover.
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Instruction Book IB182312EN June 2016 www.eaton.com
50/75/150 VCP-W
Selectable Ground and Test Device
SECTION 7: REPLACEMENT OF
COMPONENTS
7.1 GENERAL
In order to minimize production downtime, it is recommended that
an adequate quantity of spare parts carried in stock. The quantity
will vary from customer to customer, depending upon the service
severity and continuity requirements. Each customer should develop
his own level based on operating experience.
7.1.1 ORDERING INSTRUCTIONS
1. Always specify the selectable ground and test device rating
information and general order number, from the nameplate.
2. Describe the item, give the style number, and specify the
quantity required.
3. Specify the method of shipping desired.
4. Send all orders or correspondence to the nearest Eaton’s
Electrical Services & Systems sales office.
5. Include negotiation number with order when applicable.
Table 5. Common Replacement Parts
ITEMS DESCRIPTIONS
CURRENT
EATON STYLE
NUMBER
DISCONNECTS
Primary
Disconnects
1200 / 2000 Primary Disconnect Assembly 94B8000G98
3000 Primary Disconnect Assembly 94B8000G99
Eaton
1000 Eaton Boulevard
Cleveland, OH 44122
United States
Eaton.com
© 2016 Eaton
All Rights Reserved
Printed in USA
Publication No. IB182312EN
June 2016
Eaton is a registered trademark.
All trademarks are property
of their respective owners.
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