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The normal method of operation employs a
hand-held control pendant on a 30 ft
(9.1 m) cord for remote control. Optionally,
the racking system can be controlled over a
communications channel, such as used with
protective relays or HMI.
The SIERS electrical racking system consists
of the racking mechanism itself (shown in
Figure 1: SIERS Siemens integrated electrical
racking system mechanism) with integrated
gear motor and limit switches to sense the
positions (OPEN/DISCONNECT and CLOSE/
CONNECT) of the isolating switch, plus
appropriate power supply and control relays.
The system is designed for operation on a
125 Vdc control power supply, or optionally,
from a 120 Vac control power supply from
the controller. As a further option, the
system can be supplied with provisions for
external 120 Vac supply for maintenance
purposes.
The SIERS Siemens integrated electrical
racking system is available for all type
SIMOVAC non-arc-resistant and SIMOVAC-AR
arc-resistant medium-voltage motor
controllers. The system allows remote
control of the isolating switch to either of
the two positions inside the high-voltage
compartment, including the OPEN/
DISCONNECT and CLOSE/CONNECT
positions.
The SIERS electrical racking system is also
available in a retrofit kit form for existing
types SIMOVAC non-arc-resistant and
SIMOVAC-AR arc-resistant medium-voltage
motor controller installations.
Signal words
The signal words "danger," "warning", and
"caution" used in this instruction manual
indicate the degree of hazard that may be
encountered by the user. These words are
defined as:
Danger - Indicates an imminently hazardous
situation that, if not avoided, will result in
death or serious injury.
Warning - Indicates a potentially hazardous
situation that, if not avoided, could result in
death or serious injury.
Caution - Indicates a potentially hazardous
situation that, if not avoided, may result in
minor or moderate injury.
Notice - Indicates a potentially hazardous
situation that, if not avoided, may result in
property damage.
Instruction manual
Field service operation and
warranty issues
Siemens can provide competent, well-
trained field service representatives to
provide technical guidance and advisory
assistance for the installation, overhaul,
repair, and maintenance of Siemens
equipment, processes and systems. Contact
regional service centers, sales offices or the
factory for details, or telephone Siemens
field service at +1 (800) 333-7421 or +1 (423)
262-5700 outside the U.S.
For medium-voltage customer service
issues, contact Siemens at +1 (800) 333-7421
or +1 (423) 262-5700 outside the U.S.
Receiving and
inspection
Receiving and inspection
When the equipment is received, follow the
instructions for receiving, handling,
inspection, and storage contained in the
basic equipment instruction manuals. The
racking system should be inspected for
damage, including damage to the motor,
chain drive, limit switches, control wiring,
and control devices.
Maintenance
Maintenance
The SIERS electrical racking system should
be maintained in the same manner as the
standard isolating switch as outlined in
maintenance section of the basic equipment
manuals. Maintenance and lubrication is
recommended at five-year intervals when
the equipment is operated under UL 347
normal service conditions, as discussed in
UL 347, clause 2.1 (normal service
conditions). During maintenance, old grease
should be cleaned off, and the moving
joints of the isolating switch lubricated with
Siemens lubricant 15-172-879-201.
| SIERS Siemens Integrated Electrical Racking System
5
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