Specifications

PIP ELSSG01
COMPLETE REVISION
Design and Fabrication of Low-Voltage Metal-Enclosed AC Power Circuit Breaker Switchgear October 2004
Page 6 of 14 Process Industry Practices
and shall incorporate time delay characteristics, as indicated on the
purchaser’s PIP ELSSG01D Data Sheet.
4.2.5 The trip device display shall be visible with the cubicle door closed.
4.2.6 If required, current-limiting fuses shall be provided to extend the breaker
rating and shall cause the breaker to trip if any of the fuses operate. The
purchaser shall be notified if these fuses are required.
4.2.7 Each low-voltage power circuit breaker or each breaker in combination with
current-limiting fuses shall be capable of interrupting the available short-
circuit current in accordance with the purchaser’s PIP ELSSG01D Data
Sheet.
4.2.8 If indicated on the purchaser’s PIP ELSSG01D Data Sheet, mechanism
operated contacts (MOCs) and truck operated contacts (TOCs) shall be
supplied as two normally open (N.O.) and two normally closed (N.C.) each,
wired out to terminals.
4.2.9 If indicated on the purchaser’s PIP ELSSG01D Data Sheet, electrically
operated breakers shall have provisions for remote operation by a hand-held
control station.
4.2.9.1 The control station shall have 20 ft (6 m) of type SO cord with a
polarized plug on the end.
4.2.9.2 The control station shall have two guarded pushbuttons, a green
button for opening and a red button for closing.
4.2.10 If remote operation is indicated, a matching receptacle complete with a
threaded cover shall be installed in the breaker compartment door.
4.2.11 If remote operation is indicated, a local electrically operated close button or
switch shall not be provided on the front of the compartment.
4.3 Bus Work
4.3.1 The power buses shall be uninsulated unless indicated otherwise on the
purchaser’s PIP ELSSG01D Data Sheet.
4.3.2 Bus material shall be copper unless indicated otherwise on the purchaser’s
PIP ELSSG01D Data Sheet.
4.3.3 Bolted joints shall be tin-plated unless indicated otherwise on the
purchaser’s PIP ELSSG01D Data Sheet.
4.3.4 All horizontal and vertical bus and bus supports shall be designed and braced
to withstand the short-circuit current in accordance with IEEE C 37.20.1 -
2002, paragraph 5.4.4, unless a higher level is indicated on the purchaser’s
PIP ELSSG01D Data Sheet.
4.3.5 A 1/4-inch by 2-inch minimum copper ground bus shall be provided at the
rear and for the entire length of the assembly.
a. The bus shall be drilled at each end for a NEMA two-hole lug.
b. Ground bus joints shall be solidly bolted.