Eaton DHP VR + Series Instruction Book page 34

+
DHP-VR
+
VR-Series Replacement Circuit Breaker
Figurt 6.3. Status Indicators 50DHP-VR + ("A" shows tht spring
indication and "B" shows tht contact status indication.)
Breaker
Operations
Counter
Closing
A
Discharged Spring
Status
Main
B
Open Contact
Status
Made in the U.S.A.
Sttp 1 - On the front cover, identify the status indicators. Confirm
the closing spring status indicates 'Discharged' and the main
contact indicator shows 'Open' (Figure 6.3).
Sttp 2 - Remove the circuit breaker front cover. Be sure to save the
original fasteners for reassembly.
Sttp 3 - Charge the circuit breaker, close the circuit breaker, then
open the circuit breaker. Alternately depress the Open and Close
clappers a few times to ensure the circuit breaker is completely
discharged.
Sttp 4 - Cut a piece of one inch wide drafting / masking tape
approximately 8 to 10 inches long.
Sttp 5 - Clean the upper right cam with a mild solvent such as
alcohol. Place the tape around the cam starting from the top
down. Make certain that the tape adheres well to the cam
surface. (Figure 6.4).
Figurt 6.4. Wrapping Tapt Around Cam
Sttp 6 - Mount the transparent CloSure™ Test Tool (Figure 6.5.b)
with two bolts and washers. Refer to Figure 6.5.a and Table 6.2
for approximate mounting holes. Hand tighten the bolts.
Sttp 7 - Using a red Sanford
®
(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 6.7 and 6.11. 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
6.6).
34 Instruction Book
Push Push
To To
Open Close
+
VR-Series
Vacuum
Circuit Breaker
CLOSING
SPRING
Manual
Charge
Socket
94C9523H71
Sharpie fine point permanent marker
®
IB182917EN September 2018 www.eaton.com
Figurt 6.5.a. Attaching CloSurt™ Ttst Tool
Figurt 6.5.b. Front Vitw of CloSurt™ Tool Showing Mounting /
Ttsting Holt Locations (6352C49H01) 50DHP-VR +
C-6 C-5
Tablt 6.2. CloSurt™ Tool Mounting / Ttsting Locations by
Circuit Brtaktr Typt
APPROXIMATE
CIRCUIT MECHANISM
BREAKER CHASSIS WIDTH
DESIGNATION (INCH)
50DHP-VR +
18
Sttp 9 - Place the marker back in the hole. While holding the marker
tip against the tape, close the circuit breaker (Figure 6.8). Remove
the marker from the hole.
Sttp 10 - While closely observing the pole shaft at the right side of
the circuit breaker (Figure 6.9), 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 breaker - 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.
C-3
C-4 C-1
C-2
LOWER LOWER MARKER
MOUNTING MOUNTING PLACEMENT
HOLE HOLE HOLE
A1 B2 C1
B-2
B-1
A-4
A-3
A-2
A-1