Specifications

PIP ELSSG01
COMPLETE REVISION
Design and Fabrication of Low-Voltage Metal-Enclosed AC Power Circuit Breaker Switchgear October 2004
Page 4 of 14 Process Industry Practices
4.1.9 If indicated on the purchaser’s PIP ELSSG01D Data Sheet, all rear access
doors shall be full height, hinged, and bolted. All rear access doors shall
have provisions for padlocking.
4.1.10 All doors shall have hinges. The hinges may be either continuous or
separate. If separate hinges are used, a minimum of three hinges shall be
provided on full-height doors.
4.1.11 Provisions shall be made for the addition of vertical sections with future
breakers at open ends of the line-up. This shall include removable plates or
side sheets furnished on the end of vertical sections.
4.1.12 All breaker compartment doors shall be provided with door handle latches.
4.1.13 Provisions shall be made for padlocking breakers in the test and
disconnected positions.
4.1.14 In double-ended switchgear, each main and tie breaker shall be in separate
vertical sections.
Comment: This does not preclude metering, auxiliary equipment, or a
feeder breaker being in the same vertical section with the
main breaker or tie breaker.
4.1.15 The purchaser shall be notified of any breaker-derating factors caused by
ambient conditions and the cumulative circuit loads in the vertical sections
with multiple breakers in accordance with IEEE C37.20.1 - 2002,
Section 8.4.2.3.
4.1.16 Spaces shall be provided for future use as indicated on the one-line diagram.
Spaces shall be of three types: equipped, unequipped, and blank. Spaces
shall be configured as follows:
a. Equipped and unequipped spaces shall be capable of being modified to
add future circuit breakers of the same ampere rating without a shutdown
of the switchgear.
b. Equipped spaces shall be furnished with all hardware, wiring, doors, and
miscellaneous equipment including current transformers and monitoring
devices required to permit completion of the unit by the addition of only
a circuit breaker.
c. Unequipped spaces shall be provided with doors but with no other
equipment for future use except the power stabs. Unequipped spaces
shall not be used for mounting control switches and other auxiliary
equipment.
d. Power stabs (both line and load side) shall be provided with covers to
prevent accidental contact with live parts when door is opened.
e. Blank spaces shall be completely empty cubicles with doors but without
power stabs or other equipment.
4.1.17 Automatic shutters shall be provided over the power stabs unless indicated
otherwise on the purchaser’s PIP ELSSG01D Data Sheet.