4
Instruction Book
IB182923EN September 2018 www.eaton.com
AMH-4.76-VR
+
VR-Series
+
Replacement Circuit Breaker
SECTION 1: INTRODUCTION
This instruction booklet provides information on receiving and
handling, storage, installation, operation and maintenance of the
AMH-4.76 VR-Series
+
vacuum replacement circuit breaker. The
Vacuum Replacement circuit breakers (also referred to as VR-Series
+
)
are designed to be used in existing General Electric type AMH
metal-clad switchgear. The VR-Series
+
circuit breakers provide
superior electrical and mechanical performance as compared to
the design ratings of the original circuit breaker. VR-Series
+
Circuit
breakers provide reliable control, protection and performance, with
ease of handling and maintenance. Like ratings of the VR-Series
+
circuit breakers are interchangeable.
The VR-Series
+
circuit breaker element offers:
•
10-year or 10,000 operation scheduled maintenance intervals.
When applied in “usual service conditions” as defined by IEEE
C37.04-1999, the VR-Series
+
circuit breaker element requires
maintenance only once every ten years or ten thousand
operations, which ever comes first.
otte:
N
See Inspection & Maintenance section in this booklet for details.
•
Increased mechanical endurance.
Circuit breakers in repetitive
duty applications offer 50% more operations over conventional
vacuum circuit breaker elements before parts replacement may
be needed.
•
Increased short circuit capability.
The VR-Series
+
circuit breaker
short circuit capability can be increased to 41 kA, provided a bus
bracing study is performed and the switchgear is adequately
braced to meet the requirements per IEEE C37.59.
Use this instruction bulletin in conjunction with the technical
information provided with the original equipment order which
includes electrical control schematic and wiring diagrams, outline
diagrams, installations plans, and procedures for installation and
maintenance of accessory items.
Satisfactory performance is dependent on proper application, correct
installation, and adequate maintenance. It is very important that
this installation and maintenance instruction booklet be read and
followed closely to achieve optimum performance and a long useful
circuit breaker life in its application.
1.1 VISUAL INSTRUCTION BOOKLET ESSENTIALS
Eaton provides additional documentation designed to enhance the
technical information provided in this instruction booklet for the
VR-Series circuit breakers. The Visual Instruction Booklet Essentials
(VIBE) is a digital supplemental booklet featuring user interactive
content and informative videos intended to assist with the
maintenance of the VR-Series circuit breaker. The VIBE document is
available for immediate download at www.eaton.com/VR-Series.
1.2 QUICK RESPONSE CODE
VR-Series circuit breakers have a quick response code (QR Code) on
the escutcheon of the circuit breaker cover. This QR Code is a matrix
barcode that provides direct access to download VR-Series specific
documentation, such as product instruction booklets and the VIBE
documentation. See Figure 1.1 for the featured VR-Series QR Code.
otte:
N
A smart phont with an adtquatt QR Codt Scanntr application
must bt ustd. Downloading conttnt may incur data chargts from tht
mobilt strvict providtr.
m
WARNING
SATISFACTORY PERFORMANCE OF THESE BREAKERS 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 CIRCUIT BREAKERS. IT IS FURTHER
RECOMMENDED THAT THE INSTALLATION BE PERFORMED BY A EATON
CORPORATION TRAINED ENGINEER OR TECHNICIAN.
VR-SERIES BREAKERS ARE PROTECTIVE DEVICES, AS SUCH, THEY ARE
MAXIMUM RATED DEVICES. THEREFORE, THEY SHOULD NOT UNDER ANY
CIRCUMSTANCE BE APPLIED OUTSIDE THEIR NAMEPLATE RATINGS.
ALL POSSIBLE CONTINGENCIES WHICH MIGHT ARISE DURING
INSTALLATION, OPERATION, OR MAINTENANCE, AND ALL DETAILS
AND VARIATIONS OF THIS EQUIPMENT ARE NOT COVERED BY THESE
INSTRUCTIONS. IF FURTHER INFORMATION IS DESIRED BY THE
PURCHASER REGARDING A PARTICULAR INSTALLATION, OPERATION, OR
MAINTENANCE OF THIS EQUIPMENT, THE LOCAL EATON REPRESENTATIVE
SHOULD BE CONTACTED.
1.3 AVAILABLE AMH-4.76-VR+ CIRCUIT BREAKERS
Refer to Table 1.
Figurt 1.1. Quick Rtsponst Codt
VR-Series QR Code
