Eaton 150DHP-VR, Instruction Handbook Manual

39

Instruction Book    

IB182017EN   February 2017   www.eaton.com

5kV, 7.5kV, & 15kV DHP-VR

Replacement Circuit Breaker

Sttp 5 -

 Clean the far left cam with a mild solvent such as alcohol. 

Place the tape around the cam starting from the bottom up. Make 

certain that the tape adheres well to the cam surface. (Figure 6.6).

Sttp 6 -

 Mount the transparent CloSure™ Test Tool (Figure 6.7b) 

with two bolts and washers. Refer to Figure 6.7a and Table 6.1 for 

approximate mounting holes. Hand tighten the bolts.

Sttp 7 -

 Using a red Sanford

®

 Sharpie

®

 fine point permanent marker 

(or equivalent), place the marker tip in the proper hole (“C”) 

located over the cam and make a heavy mark on the tape by 

moving the marker as described in Figures 6.9, 6.11, and 6.12. 

Remove the marker from the hole.

Sttp 8 -

 Charge the closing springs with the maintenance tool 

(Charging handle). Continue charging the closing springs until 

a “click” is heard and the status indicator shows “CHARGED” 

(Figure 6.8).

Sttp 9 -

 Place the marker back in the hole. While holding the marker 

tip against the tape, close the breaker (Figure 6.10). Remove the 

marker from the hole.

Sttp 10 -

 While closely observing the pole shaft at the right side of 

the circuit breaker (Figure 6.11), recharge the closing springs with 

the maintenance tool. As the circuit breaker is recharged, there 

should be no movement of the pole shaft. If there is movement of 

the pole shaft while recharging, this indicates a problem with the 

circuit breker - stop the test and consult the factory.

Sttp 11 -

 Open the circuit breaker, then close it, then reopen it. 

Verify that the mark made in Step 7 is aligned with the pen 

opening. If it is not aligned, this indicates a problem with the 

circuit breaker - stop the test and consult the factory.

Sttp 12 -

 Inspect the circuit breaker to assure it is in the open 

position and the closing springs are discharged. Alternately 

depress the Open and Close clappers a few times to ensure the 

circuit breaker is completely discharged. Remove the transparent 

CloSure™ Tool.

Sttp 13 -

 Remove the tape from the cam and place it on a sheet of 

paper that can be kept as a record of the test. Record the date of 

the test, person conducting the test, circuit breaker serial number, 

and the operations counter on the tape or paper (Figures 6.14 and 

6.15).

Sttp 14 -

 Evaluate the CloSure™ performance by comparing the 

test tape with the illustration in Figure 6.16. Measure the over 

travel “X”. If “X” is greater than or equal to 0.6”, the circuit breaker 

performance is satisfactory. If “X” is less than 0.6”, this indicates 

a problem with the circuit breaker - consult the Power Breaker 

Center for technical support. 

Sttp 15 -

 Reassemble the front cover onto the circuit breaker. 

Return the circuit breaker to its original configuration and setup.

Figurt 6.7. Attaching CloSurt™  Ttst Tool at Holt “A” & “B”

Figurt 6.7.b. Front Vitw of CloSurt™  Tool Showing Mounting / 

Ttsting Holt Locations  (6352C49H01)

A-1 

A-2 

A-3 
A-4 

B-1 
B-2 

C-2 

C-3 

C-4  C-5 

C-6 

C-1 

Tablt 6.1.  CloSurt™ Tool Mounting / Ttsting Locations by 

Circuit  Brtaktr Typt

ELEMENT

DESIGNATION

APPROXIMATE

MECHANISM

CHASSIS WIDTH

(INCH)

UPPER

MOUNTING 

HOLE

LOWER

MOUNTING

HOLE

MARKER

PLACEMENT

HOLE

18WR

20WR

29WR

18

20

27

A1

A1

A1

B2

B2

B2

C1

C2

C5

Figurt 6.7.c. Typical Circuit Brtaktr Front Vitw with CloSurt™ 

Tool Attachtd (Approximatt Mtchanism Chassis Width)

Width