Supersedes October 2015 Instruction Book IB182312EN ...m.eaton.com/ecm/groups/public/@pub/@electrical/documents/content/... · Instruction Book IB182312EN. 50/75/150 VCP-W Selectable

Instruction Book IB182312EN

50/75/150 VCP-WSelectable Ground and Test Device

150 VCP-W-SGT

June 2016Supersedes October 2015Effective

ii Instruction Book IB182312EN June 2016 www.eaton.com


WARNINGIMPROPERLY 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 LIABILITYThe 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.

iiiInstruction Book IB182312EN June 2016 www.eaton.com


Table of Contents

SECTION 1: INTRODUCTION 41.1 AVAILABLE 150 VCP-W SELECTABLE GROUND AND TEST DEVICES 4

SECTION 2: SAFE PRACTICES 6

SECTION 3: RECEIVING, HANDLING, AND STORAGE 73.1 RECEIVING 73.2 HANDLING 73.3 STORAGE 83.4 APPROXIMATE WEIGHT BY TYPE 8

SECTION 4: DESCRIPTION AND OPERATION 114.1 INSULATING BARRIERS 114.2 BUSHINGS AND DISCONNECTING CONTACT ASSEMBLIES 114.3 GROUNDING CONTACTS 114.4 BREAKER-CELL CODING PLATES 114.5 CELL POSITION DESCRIPTION 114.6 DEVICE AMPERAGE CONVERSION PROCEDURE 13

SECTION 5: INSTALLATION & INSPECTION 145.1 EXAMINATION FOR DAMAGE 145.1.1 NAMEPLATE VERIFICATION 145.2 OPERATING PROCEDURE 145.5 INSERTION PROCEDURE 165.5 REMOVAL PROCEDURE 16

SECTION 6: INSPECTION AND MAINTENANCE 186.1 INTRODUCTION 186.2 FREQUENCY OF INSPECTION 186.3 INSPECTION AND MAINTENANCE PROCEDURES 186.4 INSULATION INTEGRITY CHECK 18

SECTION 7: REPLACEMENT OF COMPONENTS 197.1 GENERAL 197.1.1 ORDERING INSTRUCTIONS 19

4 Instruction Book IB182312EN June 2016 www.eaton.com


SECTION 1: INTRODUCTIONThe 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.

CAUTIONBECAUSE 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.

WARNINGSATISFACTORY 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 CurrentkA / RMSSymmetrical

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

5Instruction Book IB182312EN June 2016 www.eaton.com


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

HGI

J

I

E

F

B

C C

A



SECTION 2: SAFE PRACTICESSelectable Ground and Test Devices are designed with several built-in interlocks and safety features to provide safe and proper operating sequences.

DANGERTO 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.



SECTION 3: RECEIVING, HANDLING, AND STORAGESelectable 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

WARNINGDO 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



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



Figure 3.3.a. Front External View of 150 VCP-W SG&T Device

3

2

1

8

5

4

76

Front External View (150 VCP-W SG&T Shown)

1 Lock-out / Tag-out Ring 4 KirkTM Key Interlock* 7 Lift / Pull Handle

2 Friction Hinge 5 Spring Loaded KirkTM Lock Bolt* 8 Ground Contact

3 Selector Blade Latch Ring 6 Code Plate

otee:N * May be deleted at option of end user.



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)

211



SECTION 4: DESCRIPTION AND OPERATIONThe 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)

WARNINGIT 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

NOTICECODE 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).

WARNINGFOR 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)



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)



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.

otee: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

Examplee: 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



SECTION 5: INSTALLATION & INSPECTION

WARNINGBEFORE 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.

DANGERFAILURE 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.

CAUTIONWHEN 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’.

NOTICEBECAUSE 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.



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 KirkTM Lock Bolt



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.

DANGERFAILURE 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

CAUTIONTHE 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’.

DANGERFAILURE 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.

WARNINGEXAMINE 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.

WARNINGDO 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.



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.



SECTION 6: INSPECTION AND MAINTENANCE6.1 INTRODUCTION

DANGERDO 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.



SECTION 7: REPLACEMENT OF COMPONENTS7.1 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

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© 2016 EatonAll Rights ReservedPrinted in USAPublication No. IB182312ENJune 2016

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Supersedes October 2015 Instruction Book IB182312EN ...m.eaton.com/ecm/groups/public/@pub/@electrical/documents/content/... · Instruction Book IB182312EN. 50/75/150 VCP-W Selectable