molded case circuit breakers - Eaton Canada
molded case circuit breakers - Eaton Canada
molded case circuit breakers - Eaton Canada
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278<br />
SWITCHGEAR (MEDIUM VOLTAGE)<br />
VCP Vac-Clad Switchgear Assemblies,<br />
Power Circuit Breakers, and Renewal Parts<br />
PRODUCT HISTORY<br />
Vac-Clad Switchgear with Type VCP Drawout Vacuum Power Circuit Breakers<br />
Westinghouse Vac-Clad medium voltage<br />
metal-clad switchgear with type VCP vacuum<br />
power <strong>circuit</strong> <strong>breakers</strong> was introduced<br />
in 1981. Vacuum interrupter<br />
technology provided many advantages<br />
over the previous DH and DHP air magnetic<br />
breaker designs. Vacuum interrupters<br />
permitted the breaker size and weight to<br />
be significantly reduced, allowing for twohigh<br />
stacking construction of most breaker<br />
REPLACEMENT CAPABILITIES<br />
Type VCP-W Vacuum Power Circuit Breaker<br />
(Front and Rear Views)<br />
Low Resolution Photo<br />
ratings in the switchgear enclosure. VCP<br />
<strong>breakers</strong> withdraw onto switchgear rail<br />
assemblies for ease of inspection. Maintenance<br />
associated with air magnetic arc<br />
chutes was eliminated and contact maintenance<br />
was reduced to visual inspection<br />
of wear gap indicators.<br />
VCP <strong>breakers</strong> included a design improvement<br />
called the patented V-flex current<br />
Cutler-Hammer offers an extensive<br />
amount of products to support Vac-Clad<br />
switchgear.<br />
New VCP Vacuum Breakers<br />
Completely new factory manufactured<br />
VCP vacuum power <strong>circuit</strong> <strong>breakers</strong> are<br />
still available in ratings from 50VCP250<br />
1200 ampere to 150VCP1000 3000<br />
ampere.<br />
Remanufactured VCP Breakers and<br />
Factory Repair Service<br />
Factory remanufacturing of VCP Breakers<br />
and factory repair service for VCP Breakers<br />
are available.<br />
Renewal Parts<br />
Cutler-Hammer offers an extensive inventory<br />
of newly manufactured renewal parts<br />
for VCP switchgear structures and <strong>breakers</strong>.<br />
Fluidized Switchgear Bus<br />
Cutler-Hammer offers new fluidized epoxy<br />
bus – insulated bus to replace existing<br />
switchgear phase bus insulation.<br />
transfer system, which eliminated the<br />
transfer of primary current over a moving<br />
hinge (like DHP <strong>breakers</strong>) or sliding contact<br />
assembly (like DVP <strong>breakers</strong>). Porcelain<br />
insulation was maintained on the breaker<br />
elements and in the switchgear except for<br />
the 5 kV switchgear cell insulation, which<br />
was glass polyester as standard. The<br />
switchgear phase bus was insulated with a<br />
fluidized bed epoxy insulation system,<br />
which was a major improvement over the<br />
epoxy impregnated kraft paper or noryl<br />
that was used as sleeving on phase bus<br />
bars in previous switchgear designs.<br />
Vac-Clad switchgear was manufactured in<br />
indoor and in sheltered aisle and aisle-less<br />
outdoor enclosures.<br />
Ratings<br />
VCP switchgear provided the first complete<br />
line of Westinghouse vacuum <strong>breakers</strong><br />
in the medium voltage ratings:<br />
5 kV (250 and 350 MVA)<br />
7.5 kV (500 MVA)<br />
15 kV (500, 750 and 1000 MVA)<br />
Chronology<br />
Vac-Clad switchgear was introduced in<br />
1981 and was manufactured by Westinghouse<br />
in complete switchgear assemblies<br />
until the introduction of VacClad-W<br />
switchgear in 1986. Today, many capabilities<br />
still exist to support Vac-Clad<br />
switchgear.<br />
March 2001
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