Simplex, Inc., 5300 Rising Moon Road, Spring
fi
eld, IL 62711-6228 • 217-483-1600 • Fax 217-483-1616
Lbdman8p.indd (04/11) • © 2011 Simplex, Inc. All Rights Reserved. • Printed in the USA. • www.simplexdirect.com
LOAD BANK MANUAL • LBD Series • page 10 of 16
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 de
fi
ne abbreviated system and component names. As this is a master list, draw-
ings and text pertaining to your equipment may not contain all these terms.
AC
- Alternating Current
AIC
- Ampere interrupting
current-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
fl
ow
capacity and load bank cooling
requirement
CFR
- Cooling failure relay-
Normally energized relay in
cooling failure sub-system
CPC
- Pilot contactor-Contactor
that must be energized before
load is applied.
CPF
- Control power fuse
CT
- Current transformer-
Transformer used in metering
circuits
DC
- Direct current
DHF
- De-humidity control fuse
DHR
- De-humidity control
relay
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
GPM
- Gallons per Minute
HCF
- Humidity Control Fuse
HCR
- Humidity Control Relay
HMD
- Humidistat
HTR
- Heater Strips
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
LBA
- Load Bank Available
Relay
LFR
- Loss of Flow Relay
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
MF
- Meter fuse
MLB
- Main line bus
MOT
- Motor
NEMA
- National Electrical
Manufacturer’s Association
NSR
- Normal Source Relay
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
OPR
- Over Pressure Relay
OTR
- Over Temperature
Relay-Used in overtemperature
failure system
