Simplex, Inc., 5300 Rising Moon Road, Springfield, IL 62711-6228 • 217-483-1600 • Fax 217-483-1616
© 2007 Simplex, Inc. All Rights Reserved. • Printed in the USA. • www.simplexdirect.com
®
LOAD BANK MANUAL • Saturn 3000 DV • W.O. 63798/2 • page 13 of 20
APPENDIX A - ABBREVIATIONS USED IN THIS MANUAL
Listed below are abbreviations of terms found on Simplex Load Bank Systems. When following a load bank
drawing utilize this guide to define abbreviated system and component names. As this is a master list, drawings
and text pertaining to your equipment may not contain all these terms.
AC
-Alternating current
AIC
-Ampere interrupting cur-
rent-maximum short circuit fault
current a component can safely
interrupt
AM
-Ammeter
AMSW
- Ammeter selector
switch-selects any phase for
current reading
CF
-Control fuse
CFM
-Cubic feet per minute-
used to rate fan air flow capacity
and load bank cooling require-
ment
CFR
-Cooling failure relay-
normally energized relay in
cooling failure subsystem
CPC
-Control power contactor
CPF
-Control power fuse
CT
-Current transformer- used in
metering circuits
DC
-Direct current
EXTS
-Exhaust air temperature
switch
FCB
-Fan circuit breaker-circuit
breaker in series with fan control
power
FCVR
-Fan control voltage relay-
normally energized relay on
relay sub-panel
FM
-Frequency meter-monitors
frequency of test source
FMC
-Fan motor contactor-
controls power to fan motor
FMSW
-Frequency meter switch
FPS
-Fan power switch-used to
energize cooling system
GFB
-Ground fault breaker
GBTR
-Ground breaker tripped
relay
HVR
-High voltage relay
Hz
-Hertz-cycles per second,
measurement of frequency
IFCV
-Incorrect fan/control
voltage
INTS
-Intake air temperature
switch
K
-Relay coil/contact designation
KVA
-Kilovolt amperes
KVAR
-Kilovolt amperes-reactive
KW
-Kilowatts
KWM
-Kilowatt meter
KWT
-Kilowatt meter transducer
LM
-Louver motor
LMC
-Louver motor contactor
LR
-Load resistive element
LX
-Load reactive element
L1
-Line 1
L2
-Line 2
L3
-Line 3
MCB
-Main circuit breaker
MDS
-Main Disconnect Switch
MF
-Meter fuse
MLB
-Main Load Bus
MOT
-Motor
NEMA
-National electrical
manufacturer’s association
ODP
-Open, drip-proof-refers to
motor enclosure
OVR
-Overvoltage relay-relay
used in overvoltage failure
system, located on relay sub-
panel
OLR
-Overload relay-used for
motor protection
OTR
-Overtemperature relay-
used in failure system
PF
-Power factor-in resistive only
loads expressed as unity (1.0),
in inductive loads expressed as
lagging, in capacitive loads
expressed as leading
PAR
-Control power available
relay-relay energized when
control power is available
PFM
-Power factor meter
PS
-Pressure switch-switch used
to detect fan failure
RR
-Reset relay
RTM
-Running time meter-keeps
time log of equipment use.
TB
-Terminal block
TDR
-Time delay relay-relay
which times out before contacts
change state
TEFC
-Totally enclosed, fan
cooled-refers to motor enclosure
TEAO
-Totally enclosed, air-
over-refers to motor enclosure
UPS
-Uninterruptable power
source
V
-Voltage
VSR
-Voltage sensing relay
XCB
-Reactive load controlling
circuit breaker
