S&C Mark V Instruction Sheet

S&C Instruction Sheet 711-590 5
DANGER
Mark V Circuit-Switchers operate at high voltage� Failure to observe the
precautions below will result in serious personal injury or death�
Some of these precautions may differ from company operating procedures and rules�
Where a discrepancy exists, follow your company’s operating procedures and rules�
1� QUALIFIED PERSONS� Access to Mark V Circuit-
Switchers must be restricted only to qualified
persons� See the “Qualified Persons” section 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
flash 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� OPERATING MECHANISM AND BASE� Mark V
Circuit-Switchers contain fast-moving parts that
can severely injure fingers� Do not remove or
disassemble operating mechanisms or remove
access panels unless directed by S&C Electric
Company�
6� ENERGIZED COMPONENTS� Always consider all
parts live until de-energized, tested, and grounded�
Voltage levels can be as high as the peak line-to-
ground voltage last applied to the unit� Units that
have been energized or installed near energized
lines should be considered live until tested and
grounded�
7� GROUNDING� The Mark V Circuit-Switcher must
be connected to a suitable earth ground at the base
of the utility pole, or to a suitable building ground
for testing, before energizing the switch and at all
times when energized�
8� The ground wire(s) must be bonded to the system
neutral, if present� If the system neutral is not
present, proper precautions must be taken to ensure
the local earth ground, or building ground, cannot
be severed or removed�
9� SWITCH POSITION� Always confirm the Open/
Close position of each switch�
• Switches and terminal pads may be energized
from either side�
• Switches and terminal pads may be energized
with the switches in any position�
10� MAINTAINING PROPER CLEARANCE� Always
maintain proper clearance from energized
components�
Safety Precautions

S&C Mark V Specifications

General

Brand	S&C
Model	Mark V
Category	Switch
Language	English