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3
Safety
Ch 2 Safety
A. S
Afe
W
ork
c
ondItIon
The information in Section A is quoted from
NFPA 70E 2004 - Article 120, 120.1 Establishing an
Electrically Safe Work Condition.
120.1 Process of Achieving an Electrically Safe
Work Condition
1. Determine all possible sources of electrical
supply to the specific equipment. Check
applicable up-to-date drawings, diagrams,
and identification tags.
2. After properly interrupting the load current,
OPEN the disconnecting device(s) for each
source.
3. Wherever possible, visually verify that all
blades of the disconnecting devices are
fully OPEN or that drawout type circuit
breakers are withdrawn to the fully
disconnected position.
4. Apply lockout/tagout devices in accordance
with a documented and established policy.
5. Use an adequately rated voltage detector
to test each phase conductor or circuit part
to verify they are deenergized. Test each
phase conductor or circuit part both
phase-to-phase, and phase-to-ground.
Before and after each test, determine
that the voltage detector is operating
satisfactorily.
6. Where the possibility of induced voltages
or stored electrical energy exists, ground
the phase conductors or circuit parts
before touching them. Where it could be
reasonably anticipated that the conductors
or circuit parts being deenergized
could contact other exposed energized
conductors or circuit parts, apply ground
connecting devices rated for the available
fault duty.
B. S
Afety
G
uIdelIneS
Each user has the responsibility to instruct
and supervise all personnel associated with
usage, installation, operation, and maintenance
of this equipment on all safety procedures.
Furthermore, each user has the responsibility of
establishing a safety program for each type of
equipment encountered.
The safety rules in this instruction bulletin are
not intended to be a complete safety program.
The rules are intended to cover only some of the
important aspects of personnel safety related to
PV System 38® Remote Racking Device.
c. G
enerAl
1. Only supervised and qualified personnel
trained in the usage, installation, operation,
and maintenance of the metal-clad
switchgear shall be allowed to work on
this equipment. It is mandatory that this
instruction bulletin, any supplements, and
service advisories be studied, understood,
and followed.
2. Maintenance programs must be consistent
with both customer experience and
manufacturer’s recommendations,
including service advisories and instruction
bulletin(s). A well planned and executed
routine maintenance program is essential
for reliability and safety.
3. Service conditions and applications shall
also be considered in the development
of safety programs. Variables include
ambient temperature; humidity; actual
continuous current; thermal cycling;
number of operations; and any adverse
local conditions including excessive dust,
ash, corrosive atmosphere, vermin and
insect infestations.
IB-51807
