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 A P C G E N E R A T O R C O N T R O L U N I T S

O U R P A S S I O N F O R Q U A L I T Y C O M E S S TA N D A R D I N G C U M A N U FA C T U R I N G

For over forty years, APC has been committed to being the leader and industry standard in the
design and manufacture of aircraft electrical systems. Today this goal and pledge has not
changed, neither has our commitment to serving our customers, the quality of our products, or
company ownership. In fact, while most other manufacturers are changing hands, consolidat-

y
ing and changing their manufacturing location, APC has continued to operate under the same
name, ownership and manufacturing base.

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Far more advances in generator control unit design and performance are being made every

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day. Even while industry practices and standards are rapidly changing, APC has welcomed
these challenges and continuously evolves along with industry trends in today's market. With
the most up-to-date technologies and product knowledge close at hand, APC has stepped into

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the forefront of GCU design. APC's product line of Generator Control Units covers all industry
requirements.
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APC designs and manufactures generator control units that are far superior in architecture and
performance. Our GCU's are designed for high reliability while the price to our customers is
extremely competitive. Adding to that, APC technical support engineers are always readily
er

available to assist our customers.

APC has long been recognized for its outstanding product achievements in the aircraft indus-
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try. The successful performance of our generator control units in the field is the culmination of
our many tried and true design attributes, and advanced manufacturing techniques. Our GCU's
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are manufactured at our ISO9001 certified facility and assembled with only the highest quali-
ty components. The workmanship that goes into our products is second to none.

The generator control unit incorporates all the control and protective functions required for a
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single or multi-engine powered aircrafts 28 volt DC electric power system. APC generator con-
trol units are compact, lightweight and are designed to operate with our 28V D.C. starter-gen-
erators and other compatible machines manufactured to the requirements of MIL-G-6162.

Our generator control units can operate at ambient temperatures of between -55 O C to +71 O C
and at altitudes of up to 70,000 feet. APC's generator control units also contain many desir-
able features such as: self-cooling, lightweight, no scheduled maintenance or vibration isola-
tion is required. APC's patented “Torque Limiting” system can be integrated as an optional
addition to our high quality generator control units. Custom features can also be added to
 y
our generator control units, if any customization is requested. APC Generator Control Units feature a
robust electronic and mechanical design to provide optimum functionality in the most demanding air-

nl
craft application environments.

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Complementing our extensive product line of Generator Control Units is the recent introduction of our
Digital Generator Control Units (DGCU); the GCSG 550 series. APC’s Digital GCU uses a highly inte-
grated, state-of-the-art microcontroller to implement the control and protective functions for improved

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reliability, reduced parts count and lower manufacturing costs. Its design also makes use of bench-
mark components for increased drive capability for field excitation, and contactors control with lower
power dissipation and operating temperatures for improved component reliability. The digital GCU’s
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also feature an automatic Built-in-Test with fault isolation to the LRU level for ease of maintenance
of the electrical power system.
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At APC our motto is, "the Customer is the Focus of Everything We Do", and every effort is made to
place the customer's needs in the forefront. We continuously strive to meet and exceed our cus-
tomer's expectations. We do this through the most technologically-advanced product designs for
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superior performing products, practicing lean manufacturing techniques to keep costs down and
passing on the savings to our customers. Our customer service staff is number one in the business,
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and combined with the entire staff at APC, our business goals have been achieved overall in terms
of Quality, Price and Delivery. If you haven't already, call us toll-free at 1-877-4APCMFG, (1-877-
427-2634), or visit us on the web at www.apcmfg.com and discover first hand why APC continues
to be the most trusted OEM for aircraft electrical systems in the industry today.
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 A P C G E N E R AT O R C O N T R O L U N I T S : S U M M A R Y C H A R A C T E R I S T I C S

ELECTRICAL
Regulated Voltage 28.5 V DC Nominal

Voltage Regulation +0.3/-0.7V, all conditions of environment, gener-

ator load and speed rating.
Generator Voltage Adjustment Range 26 to 30 VDC

Recovery Time 30 msec max., full load to no load

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and no load to full load.

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Field Current 15 amps maximum

Paralleling Control Load equalization within 10% of Gen. Rating

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Generator Line Contactor Control 5 amps maximum

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Start Contactor Control 5 amps maximum

Overvoltage Protection MIL-STD-704/DO-160

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Reverse Current Protection 10% of generator rating opens line contactor.

Self Test Protective functions

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Dielectric Strength 600 Vrms, 60 Hz.

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MECHANICAL
Weight : 1.2 lbs. to 2.7 lbs. (0.54 kg to 1.22 kg)
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Dimensions: As per outline Drawing

Connector: Military Standard
Cooling: Self Cooled.
Installation: Solid Mounting ; Capable of operation in any position
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ENVIRONMENTAL
Operating Temp. Range: -55°C to +71°C
Vibration: MIL-STD-810C, Method 514.2
Shock: MIL-STD-810C, Method 516.2
Acceleration: MIL-STD-810C, Method 513.1
Altitude: Sea Level to 70,000 Ft.

NO SCHEDULED MAINTENANCE REQUIRED.

ALL APC GENERATOR CONTROL UNITS ARE DESIGNED TO MEET THE REQUIREMENTS OF MIL-R-23761B (AS)
 THE GCSG501 SERIES GCU’s ARE DESIGNED FOR
OPERATION WITH SERIES-TYPE STARTER-GENERATORS
AND INCLUDE OVERLOAD PROTECTION.

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MODEL SERIES GCSG501 3.370/3.380 0.47/0.31

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3.495/3.505
I.D. PLATE

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4.02 MAX

0.23/0.27

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0.214/0.224 DIA THRU 4.28 MAX
4 MOUNTING HOLES

5.00 MAX
3.28/3.39
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VOLTAGE
ADJUSTMENT
ACCESS

4.01 MAX
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1.55/1.59

0.086/0.098
MOUNTING THICKNESS CONNECTOR P/N MS3470L20-16P
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INDICATED SCREWS
WIRELOCKED TOGETHER
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TYPICAL AIRCRAFT INSTALLATIONS: SIKORSKY: S76 SERIES HELICOPTERS

DESIGN FEATURES AND FUNCTIONS :

CONTROL FUNCTIONS: FEATURES:
VOLTAGE REGULATOR WITH VOLTAGE ADJUSTMENT REMOTE OVERVOLTAGE AND OVERLOAD SELF TEST
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LINE CONTACTOR CONTROL INTERNAL FIELD RELAY AND FLASH START RELAY
DIFFERENTIAL VOLTAGE SENSING
REMOTE ELECTRICAL RESET
REMOTE ELECTRICAL TRIP

PROTECTION FUNCTIONS:
OVERVOLTAGE PROTECTION
OVERLOAD PROTECTION
UNDERVOLTAGE PROTECTION
REVERSE CURRENT PROTECTION
REVERSE POLARITY BUILDUP PROTECTION
OPEN GROUND PROTECTION
ANTI CYCLE PROTECTION
 THE GCSG502 AND 503 SERIES GCU’s ARE DESIGNED FOR OPERATION WITH
SERIES-TYPE STARTER-GENERATORS AND INCLUDE GENERATOR PARALLELING
CONTROL.

MODEL SERIES GCSG502/GCSG503

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TYPICAL AIRCRAFT INSTALLATIONS: GCU MODEL GCSG502:

DEHAVILLAND : DASH 7 APU

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BELL : 206L AUX. SYSTEM
MYASISHCHEV : M101T
AERO VODOCHODY: AE270
CESSNA P210 TURBO CONVERSION

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TYPICAL AIRCRAFT INSTALLATIONS: GCU MODEL GCSG503:
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SCHWEIZER: 330T
DORNIER: DO-228
U.S. ARMY: "LITTLE BIRD" HELICOPTER
NORTHROP GRUMMAN: UAV-FIRE SCOUT
NEW PIPER MALIBU CONVERSION
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PZL: SW3
PAC: CRESCO 750
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DESIGN FEATURES AND FUNCTIONS:

CONTROL FUNCTIONS: FEATURES:
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VOLTAGE REGULATOR WITH VOLTAGE REMOTE OVERVOLTAGE SELF TEST

ADJUSTMENT INTERNAL FIELD RELAY, FLASH START RELAY
GENERATOR CURRENT LIMIT AND EQUALIZER RELAY
AUTOMATIC PARALLELING CONTROL
LINE CONTACTOR CONTROL
DIFFERENTIAL VOLTAGE SENSING
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REMOTE ELECTRICAL RESET

REMOTE ELECTRICAL TRIP

PROTECTION FUNCTIONS:
OVERVOLTAGE PROTECTION
OVER EXCITATION PROTECTION
REVERSE CURRENT PROTECTION
OPEN GROUND PROTECTION
REVERSE POLARITY BUILDUP PROTECTION
ANTI CYCLE PROTECTION
LINE CONTACTOR CONTROL OUTPUT PROTECTION
GCSG502 SERIES
3.370/3.380 0.47/0.31

(-) BLACK TEST JACK

VOLTAGE
ADJUSTMENT
ACCESS
3.495/3.505
I.D. PLATE
4.02 MAX

(+) RED TEST JACK

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0.23/0.27

0.214/0.224 DIA THRU 4.28 MAX

4 MOUNTING HOLES

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4.48 MAX
3.39 MAX

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4.03 MAX

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1.55/1.59

0.086/0.098
MOUNTING THICKNESS RECEPTACLE
MS27499E20B-16P
INDICATED SCREWS
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WIRELOCKED TOGETHER
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3.370/3.380 0.47/0.31

GCSG503 SERIES
I.D. PLATE
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3.495/3.505

4.02 MAX
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0.23/0.27

4.28 MAX 0.214/0.224 DIA THRU

4 MOUNTING HOLES
4.48 MAX
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3.39 MAX

VOLTAGE
ADJUSTMENT
ACCESS
4.03 MAX

1.55/1.59

0.086/0.098
MOUNTING THICKNESS
INDICATED SCREWS RECEPTACLE
WIRELOCKED TOGETHER MS27499E20B-16P
 8 7 6 5 4 3 2 1
y REV DESCRIPTION OF CHANGE DATE APPVD
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GENERATOR CONTROL UNIT SYSTEM INTERCONNECT DIAGRAM

D D
MAIN BUS 28VDC
START BUS
LINE
CONTACTOR O ESSENTIAL BUS
DC GENERATOR CONTROL UNIT
MODEL SERIES GCSG501/502/503.

START
SWITCH
START
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10 A

RESET ON
H
A

LINE CONTACTOR CONTROL

LOAD BUS
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CONTACTOR
C KSR-1 OFF B POINT OF REGULATION C
KSR GENERATOR
CONTROL C GENERATOR ON
SWITCH
K RESET
B
KSR-2
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F ANTI-CYCLE
C A J GENERATOR OUTPUT
*
M GENERATOR FIELD EXCITATION
*
STARTER
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GENERATOR D INTERPOLE
G CIRCUIT GROUND
D
B L
* FIELD RETURN (GROUND) B
P OVERVOLTAGE SELF-TEST
E
N REMOTE TRIP
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AIRCRAFT PARTS CORPORATION
100 CORPORATE DRIVE, HOLTSVILLE, NY 11742 USA
OV TEST TRIP
A NOTES: 1. * INDICATES #16 AWG SHIELDED WIRE, ALL OTHER WIRES #20 AWG A
2. WIRES TO PINS G AND L NOT TO BE COMBINED
SWITCH SWITCH TYPICAL INTERCONNECT DIAGRAM
3. CONNECTOR P/N AND PIN ASSIGNMENTS VARIES WITH MODEL DC GENERATOR CONTROL UNIT
4. KSR-2 AUXILIARY CONTACTS OF START CONTACTOR
5. CONNECTIONS TO PINS G AND L NOT TO BE COMBINED
GCSG 501-503 SERIES
B CD 501 - 503 SERIES REV -
SHEET 1 OF 1
8 7 6 5 4 3 2 1
 THE GCSG504 SERIES GCU’s ARE DESIGNED FOR OPERATION
WITH SERIES-TYPE STARTER-GENERATORS AND INCORPORATE
GROUND FAULT PROTECTION.

3.500 1.03/0.91

MODEL SERIES GCSG504

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I.D. PLATE

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4.42 MAX 3.940

O
0.25/0.17
2.875
0.214/0.224 DIA THRU
5.65 MAX 6 MOUNTING HOLES

3.77 MAX 6.45 MAX

3.55 MAX
(+) RED
TEST JACK

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VOLTAGE
ADJUSTMENT
ACCESS
(-) BLACK
TEST JACK

4.15 MAX
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1.74/1.68

0.080/0.095
MOUNTING THICKNESS
INDICATED SCREWS RECEPTACLE
WIRELOCKED TOGETHER MS3102R24-28P
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TYPICAL AIRCRAFT INSTALLATIONS:

FAIRCHILD: METRO SERIES II, III, IV GENERAL ATOMICS: UAV-PREDATOR B
MARSH AVIATION: S2 TRACKER, OV10A HAFEI: Y12 IV
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DESIGN FEATURES AND FUNCTIONS:

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CONTROL FUNCTIONS: FEATURES:

VOLTAGE REGULATOR WITH LOCAL OR REMOTE OVERVOLTAGE AND
REMOTE VOLTAGE ADJUSTMENT GROUND FAULT SELF TEST
GENERATOR CURRENT LIMIT INTERNAL FIELD, FLASH START AND
AUTOMATIC PARALLELING CONTROL EQUALIZER RELAY
GENERATOR LINE CONTACTOR CONTROL
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DIFFERENTIAL VOLTAGE SENSING

REMOTE ELECTRICAL RESET
REMOTE ELECTRICAL TRIP
REMOTE INDICATOR CONTROL

PROTECTION FUNCTIONS:
OVERVOLTAGE PROTECTION
OVEREXCITATION PROTECTION
REVERSE CURRENT PROTECTION
OPEN GROUND PROTECTION
GROUND FAULT PROTECTION
ANTI-CYCLE PROTECTION
LINE CONTACTOR CONTROL OUTPUT PROTECTION
 8 7 6 5 4 3 2 1
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28V MAIN BUS
nl
START BUS
START KLC
D CONTACTOR LINE CONTACTOR (KLC) D
GENERATOR CONTROL UNIT SYSTEM INTERCONNECT DIAGRAM

TO
KSR X1 ESSENTIAL BUS
GND FAULT
TRANSFORMER X2
CTSG 700
LOAD

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METER

GENERATOR
CONTROL SW
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50 MV GCSG 504 SERIES
ON OFF RESET
SHUNT
GENERATOR CONTROL UNIT
START SWITCH
OTHER CHANNEL X NC REMOTE INDICATOR
MODEL SERIES GCSG504

Y COMMON REMOTE IND.

C Z NO REMOTE INDICATOR C
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10A
S NOT USED
C.B.
W CURRENT LIMIT
KSR V GROUND (GEN. TERMINAL E)
AUX CONT
U GENERATOR CONTROL RESET
J GENERATOR ON
C B
T ANTI-CYCLE
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STARTER E LOAD BUS
GENERATOR H LINE CONTACTOR COIL
A F GROUND (GENERATOR TERM. E)
P GROUND FAULT TRANSFORMER
D POINT OF REGULATION
A GENERATOR OUTPUT (TERM. B)
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B GEN. FIELD EXCITATION (TERM. D)
G GEN. INTERPOLE (TERM. D)
C FIELD RETURN (TERM. E)
B Q GROUND FAULT TRANSFORMER B
L OVERVOLTAGE TEST
N GROUND FAULT TEST
D R TRIP SWITCH
K EQUALIZER BUS
M CHASSIS GROUND
GND FAULT
TRANSFORMER

E
X1

OV GF
TEST
SWITCH
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TRIP
SWITCH

J1 CONNECTOR
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CTSG 700 X2
EQUALIZER BUS AIRCRAFT PARTS CORPORATION
100 CORPORATE DRIVE, HOLTSVILLE, NY, U.S.A.
A A
GCSG 504 SERIES
SYSTEM INTERCONNECT DIAGRAM
B CD 504 SERIES REV
SHEET 1 OF 1
8 7 6 5 4 3 2 1
 THE GCSG505 SERIES ARE FIELD WEAKENING GCU’S DESIGNED
FOR OPERATION WITH SHUNT-TYPE STARTER-GENERATORS. THESE
UNITS INCORPORATE THE START CONTROL FUNCTIONS, OVERLOAD
AND GROUND FAULT PROTECTION.

3.500 1.03/0.91

MODEL SERIES GCSG505

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I.D. PLATE

4.42 MAX 3.940

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0.25/0.17
2.875

5.65 MAX

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0.214/0.224 DIA THRU
6 MOUNTING HOLES
6.17 MAX

3.77 MAX

3.55 MAX
(+) RED
TEST JACK

RED INSULATING
BEAD

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VOLTAGE ADJUST
RECEPTACLE
MS3470L22-41P
CAUTION
(-) BLACK
TEST JACK
D.C.GCU
VOLTAGE
5.25 MAX ADJUSTMENT
ACCESS
en
1.74/1.68

0.080/0.095
MOUNTING THICKNESS
INDICATED SCREWS
WIRELOCKED TOGETHER
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TYPICAL AIRCRAFT INSTALLATIONS:

BOMBARDIER CANADAIR: CL-415, CL-215 T CCADD: SARAS
AGUSTA: A109 SERIES HELICOPTERS
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DESIGN FEATURES AND FUNCTIONS:

CONTROL FUNCTIONS: PROTECTION FUNCTIONS:
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VOLTAGE REGULATOR WITH VOLTAGE ADJUSTMENT OVERVOLTAGE PROTECTION

AUTOMATIC PARALLELING CONTROL OVEREXCITATION PROTECTION
GENERATOR CURRENT LIMIT REVERSE CURRENT PROTECTION
GENERATOR LINE CONTACTOR CONTROL GROUND FAULT PROTECTION
DIFFERENTIAL VOLTAGE SENSING OVERLOAD PROTECTION
START CONTACTOR CONTROL UNDERVOLTAGE PROTECTION
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48 V START CONTROL OVERSPEED PROTECTION

STARTER FIELD CURRENT CONTROL (FIELD WEAKENING) ANTI- CYCLE PROTECTION
AUTOMATIC STARTER CUT-OFF START/LINE CONTACTOR CONTROL OUTPUT PROTECTION
TORQUE LIMITING, START CYCLE - (PATENTED) OPEN GROUND PROTECTION
BUS TIE CONTROL
REMOTE ELECTRICAL RESET
REMOTE ELECTRICAL TRIP

FEATURES:
REMOTE OVERVOLTAGE, UNDERVOLTAGE,
GROUND FAULT AND OVERLOAD SELF TEST
INTERNAL FIELD RELAY, FLASH START RELAY AND
EQUALIZER RELAY
 THE GCSG505 SERIES ARE FIELD WEAKENING GCU’S DESIGNED
FOR OPERATION WITH SHUNT-TYPE STARTER-GENERATORS. THESE
UNITS INCORPORATE START CONTROL FUNCTIONS.

3.500 1.03/0.91

MODEL SERIES GCSG505

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I.D. PLATE
4.42 MAX

3.940

nl
0.25/0.17

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2.875
0.214/0.224 DIA THRU
5.65 MAX 6 MOUNTING HOLES

3.77 MAX 6.15 MAX

3.55 MAX (+) RED

TEST JACK

RED INSULATING

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BEAD

CAUTION RECEPTACLE
MS3470L24-31P
(-) BLACK
TEST JACK
VOLTAGE
4.75 MAX ADJUSTMENT
ACCESS
en
1.74/1.68

0.080/0.095
MOUNTING THICKNESS
INDICATED SCREWS
WIRELOCKED TOGETHER
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TYPICAL AIRCRAFT INSTALLATIONS:

BOMBARDIER: LEARJET 60 BRITTEN NORMAN: DEFENDER & ISLANDER
BELL: 412 AUX. SYSTEM VALMET: L-90TP
PZL: KANIA, SW4
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DEHAVILLAND: DASH 7 AGES APU

AERMACCHI: S211 TRAINER DASSAULT: FALCON 20 APU
BASLER: TURBO DC-3 TURBINE CONVERSION GROB: G140
PAC: CRESCO 750 XL EXTRA FLUGZ: EA500
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DESIGN FEATURES AND FUNCTIONS:

CONTROL FUNCTIONS: PROTECTION FUNCTIONS:
VOLTAGE REGULATOR WITH VOLTAGE ADJUSTMENT OVERVOLTAGE PROTECTION
AUTOMATIC PARALLELING CONTROL OVEREXCITATION PROTECTION
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GENERATOR CURRENT LIMIT (CROSS START) REVERSE CURRENT PROTECTION

GENERATOR LINE CONTACTOR CONTROL GROUND FAULT PROTECTION
DIFFERENTIAL VOLTAGE SENSING OVERSPEED PROTECTION
START CONTACTOR CONTROL START LINE CONTACTOR CONTROL-
48 V START CONTROL OUTPUT PROTECTION
STARTER FIELD CURRENT CONTROL: (FIELD WEAKENING) OPEN GROUND PROTECTION
AUTOMATIC STARTER CUT-OFF ANTI CYCLE PROTECTION
TORQUE LIMITING, START CYCLE: (PATENTED)
REMOTE ELECTRICAL RESET FEATURES:
REMOTE ELECTRICAL TRIP REMOTE OVERVOLTAGE,
AND GROUND FAULT SELF TEST
INTERNAL FIELD RELAY, FLASH START RELAY
AND EQUALIZER RELAY
 8 7 6 5 4 3 2 1
REVISIONS
y REV DESCRIPTION DATE APPROVED
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GENERATOR CONTROL UNIT SYSTEM INTERCONNECT DIAGRAM

D ESSENTIAL BUS D
28 VDC MAIN BUS
START BUS
KSC-1
START
CONTACTOR

KLC-1
X1

LINE CONTACTOR
KLC
O ON
GENERATOR
CONTROL SWITCH

OFF
RESET
KSC-2
START
CONTACTOR GCSG 505 SERIES
DC GENERATOR CONTROL UNIT
ce
GROUND FAULT KSC
TRANSFORMER
CTSG 700 START SWITCH
X2
MODEL SERIES GCSG505

Z START CYCLE CONTROL

C W START POWER C
V GENERATOR OUTPUT
en
50 MV LOAD
U RESET
SHUNT METER
10 A J GENERATOR ON
CB
T ANTI-CYCLE
E LOAD BUS
B
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H LINE CONTACTOR CONTROL
D POINT OF REGULATION
P GROUND FAULT TRANSFORMER
A GENERATOR OUTPUT
A
B GENERATOR FIELD EXCITATION
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STARTER G GENERATOR INTERPOLE
GENERATOR
X GENERATOR SPEED SENSOR
B D B
Y GENERATOR SPEED SENSOR
C FIELD RETURN (TERMINAL E)
A F ELECTRICAL GROUND
B
C Q GROUND FAULT TRANSFORMER
SPEED
SENSOR L OVERVOLTAGE TEST
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E
N GROUND FAULT TEST
GROUND FAULT X1 R GENERATOR REMOTE TRIP
TRANSFORMER K EQUALIZER (Paralleling)
CTSG 700
X2 M CHASSIS GROUND
TO
OPPOSITE
OV GF
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CHANNEL GCU PIN K
J1
A 1 (*) INDICATES #16 AWG SHIELDED WIRE. MASTER A
NOTES: TEST SWITCH
2 ALL WIRES # 20 AWG UNLESS NOTED OTHERWISE. SWITCH
3 GCU PINS A, V INTERNALLY CONNECTED. AIRCRAFT PARTS CORPORATION
4 CONNECTIONS TO GCU PINS C AND F NOT TO BE COMBINED. 100 CORPORATE DRIVE, HOLTSVILLE, NY 11742
5 CONNECTION TO GCU PIN D NOT TO BE COMBINED WITH ANY OTHER WIRE.
6 KSC-2 ARE AUXILIARY CONTACTS OF START CONTACTOR. TYPICAL INTERCONNECT DIAGRAM
7. CONNECTOR P/N AND PIN ASSIGNMENTS VARIES WITH MODEL DC GENERATOR CONTROL UNIT
B CD 505 SERIES REV: --
SHEET 1 OF 1
8 7 6 5 4 3 2 1
 MODEL GCSG550 DIGITAL GCU

FEATURES :
AUTOMATIC BIT & MONITORING
FAULT DIAGNOSTICS INDICATION
THRESHOLD SELECTION
SERIAL COMMUNICATION
INTEGRAL FIELD RELAY
FLASH START RELAY
EQUALIZER RELAY

MODEL GCSG550

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4.180
.224/.214 DIA THRU
8 MOUNTING HOLES 3.500
.219 DIA

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2 PLACES

I.D. PLATE
4.42 MAX

3.940

O
.25/.17 2.195
2.875 1.09 MAX
(-)BLACK
VOLTAGE

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TEST JACK 5.75 MAX
ADJUSTMENT
ACCESS 6.23 MAX 3.50 MAX
FAULT
INDICATORS
(4) RECEPTACLE
D38999/20FJ4AN
DETAILED GEN. VOLT. ADJ.

FAULT GCU OV GF SYS

INDENT. (+)RED
TEST JACK
en
CAUTION
.417 OBSERVE PRECAUTIONS FOR HANDLING
ELECTROSTATIC SENSITIVE DEVICES (ESD)

MAX
WHEN REMOVING THIS COVER

CAUTION
2.25/1.95
DO NOT CONNECT/DISCONNECT UNIT
WHILE POWER IS APPLIED

.095/.075
MOUNTING
THICKNESS
er

INDICATED SCREWS ARE

INDICATED SCREWS ARE
WIRE-LOCKED TOGETHER
WIRE-LOCKED TOGETHER

DESIGN FEATURES AND FUNCTIONS:

ef

CONTROL FUNCTIONS: PROTECTION FUNCTIONS:

VOLTAGE REGULATOR WITH VOLTAGE ADJUSTMENT OVERVOLTAGE PROTECTION
AUTOMATIC PARALLELING CONTROL OVEREXCITATION PROTECTION
rR

GENERATOR CURRENT LIMIT REVERSE CURRENT PROTECTION

START/LINE CONTACTOR CONTROL GROUND FAULT PROTECTION
DIFFERENTIAL VOLTAGE SENSING OVERLOAD PROTECTION
FIELD WEAKENING CONTROL OPEN SHUNT PROTECTION
TORQUE LIMITING, START CYCLE UNDERVOLTAGE PROTECTION
AUTOMATIC STARTER CUT-OFF OVERSPEED PROTECTION
Fo

REMOTE ELECTRICAL RESET OPEN GROUND PROTECTION

REMOTE ELECTRICAL TRIP CONTACTORS OUTPUT PROTECTION
OPEN P.O.R.
TEMPERATURE RANGE : -40Oc TO +71Oc SHUNT FIELD CIRCUIT MONITORING
ENVIRONMENTAL - EMI: DO-160 D REVERSE POLARITY PROTECTION
SOFTWARE CERTIFICATION: DO-178B ANTI CYCLE PROTECTION
CONNECTOR: MIL-C-38999 SERIES III
WEIGHT : 2.0 LBS.
LENGTH : 5.75 IN.
WIDTH : 3.50 IN.
HEIGHT : 4.15 IN.

CERTIFICATION PENDING
 A I R C R A F T PA R T S C O R P. A U T H O R I Z E D D I S T R I B U T O R S & R E PA I R S TAT I O N S :
UNITED STATES - AVIALL SERVICES SOUTH AFRICA -
PERKINS AEROSPACE SUPPLY 907 Cure-Boivin CONSAV
P.O. Box 517 Boibrand, Quebec J7G 2S8 PO Box 226
Glen Oaks, NY 11004 Tel: 450-437-3844 Darling 7345
Tel: 516-437-4110 Fax: 450-437-3997 South Africa
Fax: 516-437-3930 Tel.: 27 (22) 409 2158
AVIALL SERVICES Fax: 27 (22) 409 2159
FLITE COMPONENTS 7150 Torbram Road
2734 Burbank Street Mississauga, Ontario EUROPE -
Dallas, TX 75235-2603 L4T 3Z8 SUPAIR AIRLINE SUPPORT
Tel: 800-527-5179 Tel: 905-676-1695 Parallelstrasse 5
Fax: 214-350-2849 Fax: 905-676-9046 D-22851 Norderstedt
Germany
PETROLEUM HELICOPTERS AVIALL SERVICES Tel: 49-40-529-8870

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P.O. Box 90808 4840 Cowley Crescent Fax: 49-40-529-8876
Lafayette, LA 70509 Vancouver Int’l Airport

nl
Tel: 337-235-2452 Richmond, British Columbia AVIALL
Fax: 337-232-6537 V7B 1C1 Aviall Hoeksteen 153
Tel: 604-270-6144 2132 MX Hoofddorp
PRECISION HELIPARTS Fax: 604-270-3115 Amsterdam, The Netherlands

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495 Lake Mirror Rd. #800G Tel: 31-20-653-1126
Atlanta, GA 30349 AVIALL SERVICES Fax: 31-20-653-1841
Tel: 404-768-9090 2073 Logan Avenue-Unit 9
Fax: 404-768-9006 Winnipeg, Manitoba R2R 0J1 NORTHERN EUROPE -
Tel: 204-775-8004 PATRIA OSTERMANS AERO AB

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SEATTLE AERO Fax: 204-786-1556 Box 116
12410 S.E. 32nd Street S-190 46 Stockholm-Arlanda
Bellevue, WA 98005 W. G. C O X AVIATION SUPPLIES Sweden
Tel: 425-643-4220 1000 Stevenson Road N. Tel: 46-8-593-787-00
Fax: 425-746-9517 Oshawa Municipal Airport Fax: 46-8-593-787-95
en
Oshawa, Ontario L1J 5P5
AAR DISTRIBUTION Tel: 905-728-4741 SATAIR A/S
One AAR Place Fax: 905-723-7698 Amager Ladevej 147A
1100 Wood Dale Rd. DK-2770 Kastrup
Wood Dale, IL. 60191 MEXICO - Denmark
Tel: 630-227-2000 SERVICIO INTEGRAL AERONAUTICO
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Tel: 45-3247-0100
Fax: 630-227-5589 Calle 645 No. 17 Fax: 45-3251-3434
U. Hab. San Juan de Aragon IV
AIRCRAFT COMPONENT Mexico, D.F. C.P. 07970 ASIA -
SERVICES Tel.: 5794-8121
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AVIALL PTE. LTD.

330 S. E. 15th Street Fax.: 5794-7212 2 Loyang Lane #05-02
Pompano Beach, FL 33060 Singapore 508913
Tel: 954-781-0398 CENTRAL AMERICA - Tel: 65-6542-5420
Fax: 954-781-0398 CENTRAL AMERICAN AVIATION SERVICES
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Fax: 65-6542-8222
Hangar K5, Avenida Hincapie
AVIALL 18-05 Zona13, Guatemala City AVIALL AIRSTOCKS LTD.
P.O. Box 619048 Guatemala, 01013, C.A. 604 New Bright Building
2750 Regent Blvd. Tel.: 011-502-332-6041 11 Sheung Yuet Road
Dallas, TX 75261-9048 Fax: 011-502-332-6045 Kowloon, Hong Kong
Tel: 1-800-AVIALL-1 Tel: 852-2318-0233
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Fax: 972-586-1982
SOUTH AMERICA - Fax: 852-2331-9222
AVIATION CENTER
CANADA - COMERCIO e SERVICOS LTD. AUSTRALIA -
CANADIAN AERO ACCESSORIES Av. Ayrton Senna, 2541 AVIAQUIP
170 George Craig Blvd. N.E. Aeroporto de Jacarepagua 41 Kembla Street
Calgary, Alberta T2E 7H2 Cep 22775-000 Cheltenham, Victoria
Tel: 403-250-9077 Rio de Janeiro, RJ Brazil 3192 Australia
Fax: 403-250-6841 Tel: 55-21-2431-2505 Tel: 61-3-9585-1211
Fax: 55-21-3325-9115 Fax: 61-3-9585-1837
AVIALL SERVICES
657 Barnes Rd.,Suite #1 OSIRIS AVIATION
Enfield, Nova Scotia 1799 NE 164th Str., Unit 105
B2T 1K3 North Miami Beach, FL. 33162
Tel: 902-873-4646 Tel.: 305-949-4644
Fax: 902-873-3932 Fax: 305-949-9906
A U T H O R I Z E D D I S T R I B U T O R S & R E PA I R S TAT I O N S :
DISTRIBUTORS - (CONTINUED): CENTRAL AMERICA - ASIA -
NEW ZEALAND - CENTRAL AMERICAN AVIATION SERVICES C & A AVIATION (PTE) LTD.
AVIALL NEW ZEALAND LTD. Hangar K5, Avenida Hincapie Bldgs 110/143
P.O. Box 73-055 18-05 Zona13, Guatemala City East Camp, Seletar Airfield
Cyril Kay Road Guatemala, 01013, C.A. Singapore, 798370
Auckland Intl Airport Tel.: 011-502-332-6041 Tel: 65-6481 2233
Auckland, New Zealand Fax: 011-502-332-6045 Fax: 65-6481 0827
Tel: 64-9-275-0571
Fax: 64-9-275-6569 UNITED KINGDOM - SANTOKU AVIATION ELECTRIC
AIRCRAFT COMPONENT 14-5 Higashi-kojiya 2 chome
REPAIR STATIONS: SERVICES/(AAR)-LONDON Ohta-ku, Tokyo
UNITED STATES - 35 Willow Lane 144-0033, Japan
AIRCRAFT PARTS CORP. Mitcham, Surrey CR4 4UQ Tel: 81-3-3745-7711

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100 Corporate Dr. United Kingdom Fax: 81-3-3745-0151
Holtsville, N.Y. 11742 Tel: 44-2086-402-225
Tel: 631-289-0077 Fax: 44-2086-859-247 AUSTRALIA -

nl
Fax: 631-758-3861 AEOS -AIRCRAFT EQUIPMENT OVERHAUL & SALES,
CSE AVIATION PTY. LTD.
AIRCRAFT PARTS CORP. Oxford Airport, Kidlington 29 Norman Street- Peakhurst Sydney,
Oxford 0X5 1RA, England New South Wales, 2210 Australia

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SERVICE CENTER
4611 W. Harry Tel: 44-1865-844-200 Tel: 61-2-8525-6444
Wichita, KS. 67209 Fax: 44-1865-379-123 Fax: 61-2-9534-3630
Tel: 316-943-8600 EUROPE -
Fax: 316-943-8603 AEROLEC
EADS SOGERMA SERVICES Airport Hangar 8, Kittyhawk Lane

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FLITE COMPONENTS Aéroport de Bordeaux-Merignac Parafield Airport, Parafield
2734 Burbank Street B. P. 2 5106 S. Australia
Dallas, TX 75235-2603 33701 Mérignac CEDEX Tel: 61-8-8258-2013
Tel: 214-350-5996 France Fax: 61-8-8285-6788
Fax: 214-350-2849 Tel: 33 5 56 55 40 00
en
Fax: 33 5 56 55 28 37 MASLING INDUSTRIES PTY LTD
FLIGHTCRAFT, INC. Airport Hangar 3
7777 N.E. Airport Way AIRCRAFT COMPONENT Cootamundra, New South Wales
Portland, OR 97218 SERVICES/(AAR)-AMSTERDAM 2590 Australia
Tel: 503-331-4220 Kruisweg 705 Tel: 61-2-6942-3155
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Fax: 503-331-4273 2130 AB Hoofddorp Fax: 61-2-6942-3250

The Netherlands
PETROLEUM HELICOPTERS Tel: 31-20-655-22-22
P.O. Box 90808 Fax: 31-20-653-47-77
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Lafayette, LA 70509
Tel: 337-235-2452 RUAG AEROSPACE SERVICES GmbH
Fax: 337-232-6537 P.O. Box 1253
82231 Wessling
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CANADA - Germany
CANADIAN AERO ACCESSORIES Tel: 49-8153/30-2706
170 George Craig Blvd. N.E. Fax: 49-8153/30-2148
Calgary, Alberta T2E 7H2
Tel: 403-250-9077 HEDINGER
Fax: 403-250-6841 Flugzeug-Aggregate AG
Ebnaterstrasse 138
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S. AMERICA - CH-9630 Wattwil

AVIATION CENTER Switzerland
COMERCIO e SERVICOS LTD. Tel: 41 71 988 32 22
Av. Ayrton Senna, 2541 Fax: 41 71 988 36 81
Aeroporto de Jacarepagua
Cep 22775-000 NORTHERN EUROPE -
Rio de Janeiro, RJ Brazil PATRIA OSTERMANS AERO AB
Tel: 55-21-2431-2505 Box 116
Fax: 55-21-3325-9115 S-190 46 Stockholm-Arlanda Sweden
Tel: 46-8-593-787-00
AEROCENTRO DE SERVICIOS Fax: 46-8-593-787-95
P.O. Box 68823
Altamira 1062
Caracas, Venezuela
Tel.: (58-212)-959-04-01
Fax: (58-212)-959-51-13/34-86
 A P C O N L I N E O R D E R C E N T E R @ w w w . a p c m f g . c o m

DID YOU KNOW??

Did you know that you can request a quote and order products from APC on-line?

Did you know that you can submit requests for brochures, technical bulletins and overhaul manu-
als by visiting our website - 24 hrs a day, 7 days a week?

Did you know that you can find a list of worldwide APC distributors and repair stations as well as
look up our complete PMA parts list on our website?

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For more information about Aircraft Parts Corp. products, services and new developments, please
visit our website at www.apcmfg.com. (See snapshot of our homepage below).

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HOW TO USE OUR WEBSITE ONLINE

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ORDER CENTER:

If you are currently an Aircraft Parts Corp.

customer, you can log with your user ID and password to order parts, review and track your order,
its so easy, with just a few clicks your done.

APC customers who don’t yet have a user ID and password, please contact Laurie Cordes at 631-
289-0077, Ext. 108 or e-mail Laurie at lcordes@apcmfg.com to register your name and company and
receive your log-on ID and password information.

For non-APC customers, please contact Cookie Hodgkiss-Daly at 631-289-0077, Ext. 128, or e-mail
Cookie at chodgkiss-daly@apcmfg.com for more information or to request a quote on APC products.
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O U R PA S S I O N F O R Q U A L I T Y ,

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C O M E S S TA N D A R D .
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Proud Members of:

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F.A.A. APPROVED
(JAR/FAR-145) CERTIFIED
REPAIR STATION:
Certification: #MB1R316K
Aircraft Parts Corp.

APC WORLD HEADQUARTERS:

HEADQUARTERS:
AIRCRAFT PARTS
ARTS CORP.
CORP.
100 CORPORATE
CORPORATE DRIVE
HOLTSVILLE,
HOLTSVILLE, N.Y.
N.Y. 11742, U.S.A.
PHONE: 631- 289-0077 FAX:
FAX: 631-758-3861 (2004) - Aircraft Parts Corp. U.S.A.
TOLL-FREE: 1-877-427-2634