Specifications

PIP ELSGS01
COMPLETE REVISION
Design and Fabrication of High-Resistance Grounding System (600 Volts or Below) July 2004
Page 4 of 11 Process Industry Practices
4.2.3 Unless otherwise specified on the purchaser’s data sheet, PIP ELSGS01D,
the grounding system shall be capable of operating continuously at rated
output in an ambient temperature range of 32°F (0°C) to 104°F (40°C).
4.2.4 The grounding system shall operate over the entire temperature range at a
relative humidity of 5% to 95% non-condensing.
4.3 Enclosure
4.3.1 Unless otherwise specified on the purchaser’s data sheet, PIP ELSGS01D,
the grounding system shall be integrated into the switchgear or motor control
center enclosure.
4.3.2 Unless otherwise specified on the purchaser’s data sheet, PIP ELSGS01D,
the grounding system enclosure material shall be consistent with the
switchgear or motor control center enclosure.
4.3.3 Unless otherwise specified on the on the purchaser’s data sheet,
PIP ELSGS01D, enclosure type shall be NEMA 1.
4.3.4 Energized parts operated at or above 50 volts shall be guarded.
4.3.5 Each enclosure compartment shall have hinged access doors.
4.3.6 All grounding system components and connection points shall be visible and
shall be safely and easily accessible from the front of the enclosure.
4.3.7 Outdoor enclosures shall have hinged front panels with inner dead-front
construction. Metering and controls shall be accessible without the use of
tools.
4.3.8 Grounding system components shall be mounted on suitable back plates on
the inside of the enclosure.
4.3.9 Enclosure ventilation openings shall have 1/8-inch mesh vermin-proof
screens made of 304 stainless steel. Screens shall be located on the inside of
the openings.
4.3.10 Bolts and nuts on removable panels shall be captive type.
4.3.11 Bolting and hardware shall be corrosion resistant.
4.3.12 All disconnect devices shall have a means for padlocking in the OFF
position.
4.3.13 Unless otherwise specified on the purchaser’s data sheet, PIP ELSGS01D,
grounding systems not installed inside switchgear or motor control centers
shall have cable entry from the bottom.
4.4 Control System
4.4.1 Control system shall include the following components, unless included as
part of a digital control unit:
a. One (1) ammeter (0 to 5 A movement) to indicate ground current if a
ground occurs on the system. Ammeter shall have suitable range to
indicate maximum pulsing current.