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VR+ Series
Eaton VR+ Series User Manual
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September 20
18
Instruction Book
IB1
82923EN
A
MH-
4.76
-VR
+
VR
-Se
r
ies
+
R
ep
lace
m
e
nt C
ir
c
u
it Br
eak
e
r
Eective
AMH-4.76-VR
+
1
20
0A Shown
2
Table of Contents
Default Chapter
3
Table of Contents
3
Section 1: Introduction
4
Visual Instruction Booklet Essentials
4
Quick Response Code
4
Available Amh-4.76-Vr + Circuit Breakers
4
Section 2: Safe Practices
7
Section 3: Receiving, Handling, and Storage
8
Receiving
8
Handling
8
Amh-4.76-Vr + Approximate Weights
9
Section 4: Description and Operation
12
Vacuum Interrupter
12
Vacuum Interrupter Assembly
12
Contact Erosion Indicator
12
Contact Wipe and Stroke
13
Phase Barriers
13
Bushings and Disconnecting Contact Assemblies
13
Stored Energy Mechanism
13
Closing Spring Charging
13
Closing Operation
13
Tripping Operation
14
Trip-Free Operation
14
Control Schemes
14
Timing
14
Secondary Connection Block
14
Interlocks
14
Anti-Close Interlock
14
Racking System Trip and Spring Release Interlocks
14
Active Interlock
15
Shutter Interlock
15
Miscellaneous Items
15
Operations Counter
15
Moc Operator
15
Section 5: Inspection & Installation
20
Examination for Damage
20
Nameplate Verification
20
Sure Close Mechanism Adjustment
20
Manual Operation Check
21
Vacuum Interrupter Integrity
21
Low Frequency Withstand Test (Insulation Check)
21
Contact Erosion and Wipe
21
Primary Circuit Resistance
21
Electrical Operations Check
21
Description of Operational Positions
22
Insertion Procedure
22
Removal Procedure
23
Section 6: Inspection & Maintenance
24
Inspection Frequency
24
Inspection and Maintenance Procedures
24
Vacuum Interrupter Integrity Test
25
Contact Erosion and Wipe
25
Insulation
26
Insulation Integrity Check
26
Primary Circuit Resistance Check
26
Vr-Series + Circuit Breaker Element Mechanism
26
Check
26
Closure™ Test
26
Maintenance Recommendation
30
Section 7: Replacement Parts
32
General
32
Ordering Instructions
32
Other manuals for Eaton VR+ Series
Supplemental Instructions
12 pages
5
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Eaton VR+ Series Specifications
General
Trip Type
Thermal-magnetic
Voltage
120/240V
Number of Poles
1, 2
Standards
UL 489
Terminal Type
Screw
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