General Description; Typical Type Sdv7 Distribution Circuit Breaker - Siemens SDV7 Instruction Manual

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General description

Figure 1: Typical type SDV7 distribution circuit breaker
Introduction
Siemens type SDV7 distribution circuit
breaker is precision built equipment designed
to function efficiently under normal operating
conditions. It is designed and manufactured
to operate within the parameters established
in ANSI/IEEE C37 and NEMA standards for
distribution circuit breakers. Performance
requirements of these standards have been
met or exceeded by these designs. Specific
standards which apply include:
ANSI/IEEE C37.04-1999 rating structure
for ac high-voltage circuit breakers
ANSI/IEEE C37.06-2009 preferred ratings
ac high-voltage circuit breakers
ANSI/IEEE C37.09-1999 test procedure for
ac high-voltage circuit breakers
NEMA SG4-2009 ac high-voltage circuit
breakers.
The instructions included in this instruction
manual are provided to aid you in obtaining
longer and more economical service from
your Siemens type SDV7 distribution circuit
breaker. For proper installation and operation,
this information should be distributed to your
operators and engineers.
By carefully following these instructions,
difficulties should be avoided. However, these
instructions are not intended to cover all
details of variations that may be encountered
in connection with the installation, operation
and maintenance of this equipment.
Should additional information be desired,
including replacement instruction manuals,
contact your local Siemens representative.
Scope
These instructions cover the installation,
operation and maintenance of Siemens type
SDV7 distribution circuit breaker using
vacuum interrupters. The equipment designs
described in this instruction manual consists
of free-standing outdoor distribution circuit
breakers for application up to 38 kV. A typical
type SDV7 distribution circuit breaker is
shown in Figure 1: Typical type SDV7
distribution circuit breaker. All diagrams,
descriptions and instructions apply to all of
the above classes and designs unless noted
otherwise.
Standard construction details of the circuit
breaker enclosure are given in appropriate
sections of this instruction manual.
Standard construction details of the stored-
energy operating mechanism of the circuit
breaker are detailed in the type 3AH35-SE
stored-energy operator instruction manual
E50001-F710-K376-X-XXXX.
Standard construction details of the
magnetic-actuator operating mechanism of
the circuit breaker are detailed in the type
3AH35-MA magnetic-actuator operator
instruction manual E50001-F710-K378-X-
XXXX.