Hobart 6T28-600CL Operation And Maintenance Manual page 5

OM-2244 / Operation and Maintenance Manual
DCS 600/ Series 500082/ Solid State Transformer-Rectifiers
Safety Warnings and Cautions
WARNING
ELECTRIC SHOCK can KILL. Do not touch live electrical parts.
ELECTRIC ARC FLASH can injure eyes, burn skin, cause equipment damage, and
ignite combustible material. DO NOT use power cables to break load. Prevent tools
from causing short circuits.
IMPROPER PHASE CONNECTION, PARALLELING, OR USE can damage this and
attached equipment.
IMPORTANT
Protect all operating personnel. Read, understand, and follow all instructions in the
Operating/Instruction Manual before installing, operating, or servicing the equipment.
Keep the manual available for future use by all operators.
1) General
Equipment that supplies electrical power can cause serious injury or death, or damage to other equipment or
property. The operator must strictly observe all safety rules and take precautionary actions. Safe practices
have been developed from past experience in the use of power source equipment. While certain practices
below apply only to electrically-powered equipment, other practices apply to engine-driven equipment, and
some practices to both.
2) Shock Prevention
Bare conductors, terminals in the output circuit, or ungrounded, electrically-live equipment can fatally shock a
person. Have a certified electrician verify that the equipment is adequately grounded and learn what terminals
and parts are electrically HOT. Avoid hot spots on machine. Use proper safety clothing, procedures, and test
equipment. The electrical resistance of the body is decreased when wet, permitting dangerous currents to
flow through it. When inspecting or servicing equipment, do not work in damp areas. Stand on a dry rubber
mat or dry wood, and use insulating gloves when dampness or sweat cannot be avoided. Keep clothing dry,
and never work alone.
a) Installation and Grounding of Electrically Powered Equipment
This equipment must be installed and maintained in accordance with the National Electrical Code,
ANSI/NFPA 70, or other applicable codes. A power disconnect switch or circuit breaker must be
located at the equipment. Check the nameplate for voltage, frequency, and phase requirements. If
only 3-phase power is available, connect any single-phase rated equipment to only two wires of the 3-
phase line. DO NOT CONNECT the equipment grounding conductor (lead) to the third live wire of the
3-phase line, as this makes the equipment frame electrically HOT, which can cause a fatal shock.
Always connect the grounding lead, if supplied in a power line cable, to the grounded switch box or
building ground. If not provided, use a separate grounding lead. Ensure that the current (amperage)
capacity of the grounding lead will be adequate for the worst fault current situation. Refer to the
National Electrical Code ANSI/NFPA 70 for details. Do not remove plug ground prongs. Use correctly
mating receptacles.
December 15, 2014 Safety Warnings
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