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4. Always insure that drawout breakers are in one of their de-
signed cell positions, such as Connected, Test, Disconnected
or Withdrawn. A breaker permitted to remain in an intermedi-
ate position could result in control circuits being improperly
connected resulting in electrical failures.
1-4 QUALIFIED PERSONNEL
For the purpose of operating and maintaining low voltage circuit
breakers, a person should not be considered qualified if the
individual is not thoroughly trained in the operation of the circuit
breaker and how it interfaces with a switchboard. In addition,
the individual should have knowledge of the connected loads.
For the purpose of installing and inspecting circuit breakers
and their associated switchboard, a Qualified Person should
also be trained with respect to the hazards inherent to working
with electricity and the proper way to perform such work. The
individual should be able to de-energize, clear and tag circuits in
accordance with established safety practices.
1-5 OTHER PUBLICATIONS AND DOCUMENTATION
In addition to this instruction manual, other printed information
and documentation is available and supplied as appropriate. This
additional information can include, but not necessarily be limited
to, an instruction manual for the specific electronic trip unit
being used with the circuit breaker, a Renewal Parts Data Book,
and necessary dimensional drawings.
Figure 1-2 Typical DSII Nameplate
Table 1.2 Type DSLII Breaker and Combination Ratings
Type
Frame
Max Interrupting Rating,
Size, Amp.
RMS Sym. Amp., System
Voltage 600 or Below
DSLII-308
j
800
200,000
DSLII-516
j
1600
200,000
DSLII-620
j
2000
200,000
DSLII-632
k
3200
m
200,000
DSLII-840
l
4000
200,000
j
Limiter Integral with drawout breaker element.
k
DSII-632 breaker and DSII-FT32 drawout fuse truck in separate
interlocked compartments.
l
DSII-840 breaker and DSII-FT40 drawout fuse truck in separate
interlocked compartments.
m
Maximum continuous rating limited to 3000A when fuse truck
compartment is above breaker compartment.
Effective July 2010
Instructional Book
IB694C694-03
9
eaton corporation
www.eaton.com