S&C Instruction Sheet 659-520
5
Safety Precautions
1 .
QUALIFIED PERSONS. Access to the PureWave
SMS-250 system must be restricted only to qualified
persons . See “Qualified Persons” on page 2 .
2 .
SAFETY PROCEDURES. Always follow safe
operating procedures and rules .
3 .
PERSONAL PROTECTIVE EQUIPMENT. Always use
suitable protective equipment, such as rubber gloves,
rubber mats, hard hats, safety glasses, and flame-retardant
clothing, in accordance with safe operating procedures
and rules .
4 .
SAFETY LABELS. Do not remove or obscure any of
the “DANGER,” “WARNING,” “CAUTION,” or “
NOTICE
”
labels .
5 .
ENCLOSURE. Do not open access doors unless the
system is offline or otherwise authorized by S&C Electric
Company .
6 .
MAINTAINING PROPER CLEARANCE. Always
maintain proper clearance from energized components,
ensuring the dead-front access panels are in place after
maintenance and before operation .
7 .
HAZARDOUS VOLTAGES. High-voltage dc is present
even without utility power connected . Hazardous
voltages should also be expected in all interconnecting
components and lines .
To maintain safety, the user should use a padlock
on the door of the PCS . The door and the use of the
padlock provide protection to inadvertent contact with
hazardous voltages .
8 .
GROUNDING.
For grounding purposes, the proceeding must be
followed:
• The PCS ground bar in the cable termination area
must be connected to a suitable earth ground for
testing before energizing the unit and at all times
when energized .
• The overall ground system should be sufficient to limit
the Ground Potential Rise, step voltage, and touch
voltage to acceptable limits as determined by the util-
ity’s practices and the National Electric Safety Code .
9 .
ENERGIZED COMPONENTS. Always consider all parts
live until de-energized, locked open, and tested .
10 .
ADDITIONAL CONNECTIONS. The user should not
attempt to connect any additional logic controls or power
connections to the PureWave SMS-250 system (beyond
the connections shown on the interconnect drawing)
without having received written approval from S&C
Electric Company .
11 .
INSULATED HAND TOOLS.
To use insulated hand tools, the proceeding must be
followed:
• Insulated hand tools are required when working on or
around any energized equipment . Use only properly
rated tools for the energy present .
• Tool inventories should be kept to ensure that all tools
that enter the system enclosure are removed prior to
energizing the system .
12 .
EMERGENCY PROCEDURES AND EQUIPMENT.
For emergency procedures:
• The owner should develop policies and procedures
for handling emergency situations .
• It is the responsibility of the owner to develop site-
specific emergency action plans for response to
such situations .
13 .
ADDITIONAL SAFETY INSTRUCTIONS. Consult the
battery supplier for additional safety instructions and
procedures regarding the battery used for the PureWave
SMS-250 system .
DANGER
The PureWave SMS-250 system operates at hazardous voltage. Failure to observe
the precautions below will result in serious personal injury or death.
Some of these precautions may differ from your company’s operating procedures and
rules . Where a discrepancy exists, follow your company’s operating procedures
and rules .
