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Instruction Book    

IB182217EN   October 2018   www.eaton.com

50 / 75 / 150 DHP [Cable or Hard Bus Application]

Ground and Test Device

SECTION 5: INSTALLATION & INSPECTION

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 WARNING

BEFORE PLACING THE 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 G&T DEVICE OPERATION LEADING TO DEATH, 

BODILY INJURY, AND PROPERTY DAMAGE.

When the G&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 ground and test device for loose or obviously damaged 

parts. Never attempt to install nor operate a damaged ground and 

test device.

5.1.1  NAMEPLATE VERIFICATION

Verify the information on the new G&T device matches the 

information on the purchase order. If any discrepancies exist, notify 

Eaton for resolution prior to proceeding.

5.3  SNUBBER ADJUSTMENT

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 NOTICE

FOR ALL TYPE DHP HOUSINGS, THE ADJUSTMENT STEPS OUTLINED IN 

THIS PARAGRAPH MUST BE PERFORMED BEFORE INSTALLING A DHP 

GROUND AND TEST DEVICE. FAILURE TO COMPLETE THESE STEPS COULD 

RESULT IN EQUIPMENT DAMAGE AND/OR IMPROPER OPERATION.

Before levering a ground and test device into any and all housings, 

the snubber bolts must be adjusted as outlined in steps 1 and 2. 

Refer to Figures Set 3.3 and Figure 5.2 for reference purposes. If a 

ground and test device is moved from one housing to another, the 

procedure must be repeated for the new housing.

Step 1: Measure the distance from the floor plate to the underside 

of the current transformer shelf on both sides of the housing in line 

with the location of the snubber bolts on each side of the ground 

and test device (Figure 5.1).

Step 2: Adjust the height of the top of the snubber bolt to be 

between 0.0 and 0.031 (0.0 and 1/32) inches below the measured 

height of the current transformer shelf and tighten the locking nut.

5.2  INSERTION PROCEDURES

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 NOTICE

THIS IS NOT A BREAKER OR AN ELECTRICALLY OPERATED GROUND AND 

TEST DEVICE. THEREFORE THERE IS NO SECONDARY BLOCK. THIS MEANS 

THAT THERE IS NO TEST POSITION AND IT WILL NOT BE COVERED IN THIS 

INSTRUCTION MANUAL. 

ENSURE THAT GROUNDING CABLES ARE INSTALLED PROPERLY BEFORE 

INSERTING GROUND AND TEST DEVICE INTO CELL.

WHILE LEVERING THE GROUND AND TEST DEVICE, NOTE ANY SUDDEN 

RESISTANCE TO LEVERING OR SIGNS OF BINDING. DETERMINE THE 

CAUSE OF INTERFERENCE AND CORRECT, AS APPROPRIATE, BEFORE 

PROCEEDING. 

Press down on the rail latch on the front right side of the G&T device 

with your foot, and push the G&T device toward the rear of the cell 

Figure 5.1. Current Transformer Shelf

5.2  INSTALLATION OF GROUNDING CABLES

NOTE: USE HARDWARE PROVIDED WITH THE GROUND & TEST 

DEVICE INSTALLED AS SHOWN. (Figure 5.3)
a. Determine the set of terminals required for each occasion.
b. Using the key provided (Figure 3-3) with each G&T device, unlock 

the appropriate door, exposing the terminals. This feature is not 

applicable for single terminal ground and test devices. 
c. Using 0.5-inch hardware provided, attach one end of each of the 

three grounding cables to a terminal corresponding to each phase. 

(Figure 4-3). Hardware should be torqued to 50 ft-lbs.
d. Cables are bolted to the ground plate at the factory. If they have 

been unbolted, reattach the terminal of the grounding cables to the 

copper ground bar located at the front of the truck frame. Hardware 

should be torqued to 50 ft-lbs.

Figure 5.2. Adjustments for Anti-Rotation Hold Downs  

 

 

(Shown Separate From Breaker For Clarity)

Summary of Contents for 50 DHP

Page 1: ...182217EN 50 75 150 DHP Cable or Hard Bus Application Ground and Test Device Supersedes May 2016 Effective October 2018 150 DHP Ground and Test Device Hard Bus Type Device 150 DHP Ground and Test Devic...

Page 2: ...es 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...

Page 3: ...PLATES 17 4 6 CELL POSITION DESCRIPTION 17 4 7 INSTALLATION OF GROUNDING BUS BARS 18 4 8 DEVICE AMPERAGE CONVERSION PROCEDURE 18 4 9 UNIVERSAL 1200A 2000A G T CONFIGURATION OPTIONAL 19 4 7 1 Changing...

Page 4: ...ng out tests m 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 m WARN...

Page 5: ...aker Rated Continuous Current at 60 Hz Amps A B C D E F G H 50DHP 250 Dual 1200 2000 20 50 7 00 36 13 2 94 15 12 6 81 16 50 8 50 50DHP 350 Dual a 1200 2000 20 30 7 00 36 73 2 94 15 12 11 24 16 50 8 50...

Page 6: ...Bus Application Ground and Test Device Table 4 DHP Ground and Test Device Dimensions Hard Bus Application Design Breaker Type Existing Breaker Rated Continuous Current at 60 Hz Amps A B C D E F G H 50...

Page 7: ...us Application Ground and Test Device Table 5 DHP Ground and Test Device Dimensions Hard Bus Application Design Breaker Type Existing Breaker Rated Continuous Current at 60 Hz Amps A B C D E F G H 150...

Page 8: ...st device from the enclosure before performing any maintenance Failure to do so could result in electrical shock leading to death severe personnel injury or property damage Do not leave the ground and...

Page 9: ...the original DHP air circuit breakers Use the racking handle originally provided to engage the racking shaft of the G T racking mechanism to move the device into and out of the circuit breaker compar...

Page 10: ...evice while lifting and moving Figure 3 2 a Front External View of 50DHP G T Device Figure 3 2 b Front External View of 150DHP G T Device 3 3 STORAGE If the ground and test device is to be placed in s...

Page 11: ...ton com 50 75 150 DHP Cable or Hard Bus Application Ground and Test Device Front External View 50DHP G T Shown 1 Kirk Key Interlocks 3 Ground Bus 5 Rail Latch 2 Door Latch 4 Levering Shaft Figure 3 3...

Page 12: ...150 DHP Cable or Hard Bus Application Ground and Test Device Figure 3 3 b Rear External View of DHP G T Device 1 1 2 6 5 4 3 Front External View 50DHP G T Shown 1 Primary Disconnects 3 Snubber Bolt 5...

Page 13: ...50 75 150 DHP Cable or Hard Bus Application Ground and Test Device 1 5 4 2 3 Figure 3 3 c Front External View of 50DHP 350 G T 3000A Device Front External View 150DHP G T Shown 1 Lifting Points 3 Grou...

Page 14: ...75 150 DHP Cable or Hard Bus Application Ground and Test Device 1 1 2 5 4 3 Figure 3 3 d Rear External View of 50DHP 350 G T 3000A Device Back External View 150DHP G T Shown 1 Primary Disconnects 3 Sn...

Page 15: ...ation Ground and Test Device Figure 3 3 e Front External View of 150DHP GT 500 1200A 2000A Device Front External View 1 Padlock Provision 3 Lifting Points 5 Levering Shaft 2 G T Storage Compartment 4...

Page 16: ...75 150 DHP Cable or Hard Bus Application Ground and Test Device Figure 3 3 f Rear External View of 150DHP GT 500 1200A 2000A Device Back External View 1 Primary Disconnect 3 Grounding Contact 5 Ground...

Page 17: ...ate door and turn the key This will lock the door and the key will now be able to be removed and inserted into the other lock This feature is not applicable for single terminal ground and test m NOTIC...

Page 18: ...nd and test device consists of cycloaliphatic bushings with silver plated copper conductor knobs Primary disconnecting contacts are attached to the knobs these primary disconnects are configured to en...

Page 19: ...tab ampere rating prior to inserting the G T device If the incorrect finger cluster is mounted on the G T device remove it and install the proper finger cluster 4 7 1 Changing 1200A Finger Clusters to...

Page 20: ...re 4 14 Figure 4 11 Finger Cluster Hardware Figure 4 13 Fitting 2000A Universal G T Finger Cluster Figure 4 14 2000A Universal G T Finger Cluster Removal Figure 4 12 Finger Cluster Hardware Thread the...

Page 21: ...THE SURFACE OF THE INSULATION OR WITHIN THE CELL BOTTLES FAILURE TO HEAD THIS WARNING CAN CAUSE DEATH SERIOUS PERSONNEL INJURY AND OR PROPERTY DAMAGE Orient the finger cluster with the stainless stee...

Page 22: ...in line with the location of the snubber bolts on each side of the ground and test device Figure 5 1 Step 2 Adjust the height of the top of the snubber bolt to be between 0 0 and 0 031 0 0 and 1 32 in...

Page 23: ...sh Continue cranking until the crank turns freely and the G T device stops moving The G T device should now be in the OPERATING or ENGAGED position 5 5 REMOVAL PROCEDURE To remove the G T device from...

Page 24: ...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 par...

Page 25: ...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 gr...

Page 26: ...evard Cleveland OH 44122 United States Eaton com 2018 Eaton All Rights Reserved Printed in USA Publication No IB182217EN October 2018 Eaton is a registered trademark All trademarks are property of the...

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