PERKO 9703 - Manual

CAT. NO. 9703
BATTERY DISCONNECT SWITCH
WITH ALTERNATOR FIELD DISCONNECT
INSTALLATION AND OPERATING INSTRUCTIONS
For use with alternators and generators rated 6-32 V.D.C. switch rating 480 amperes continuous, 1200 amperes inter-
mittent (15 sec. on, 5 min. off). Locate switch to keep battery cables short as possible. All wiring to the switch shall
be performed by a QUALIFIED MARINE ELECTRICIAN, and in accordance with the "Fire Protection Standard For
Motor Craft, " N.F.P.A.* No. 302, The standards of the American Boat and Yacht Council, Inc.* and the U.S.C.G.* safe-
ty standards for boat electrical systems (33CFR183). If the installation requires operation at the continuous rated
switch capacity (480 AMPS) in engine compartments, then the minimum cable size recommended is 4/0 (200° C insu-
lation). Other cable sizes may be required due to length of run and load, therefore consult engine manufacturer's rec-
ommendations for battery cable size and specifications for the installation.
CAUTION: Always STOP engines before switching to "OFF" position.
Erratic operation, particularly after very long periods of idleness, can be cleared by rapidly switching back and forth
briskly several times without any load connected.
NOTE: If switch is to be mounted in an area subject to corrosion, it is recommended that a liquid electrical coating be
applied to the terminal connections.
Alternator field disconnect is used to break the field current and protect the alternator diodes if the battery switch is
inadvertently turned to the "OFF" position with the engine running.
The following diagram illustrates a typical installation.
COMMON
F1
F2
1
ALTERNATOR FIELD
DISCONNECT
SEE DIAGRAM #2
ENGINE GROUND
STARTER
-
+
DIAGRAM #1
DIAGRAM #2 ALTERNATOR FIELD DISCONNECT
A. Use minimum 14 AWG wire, suitable for marine engine compartments.
B. On systems with a separate voltage regulator, splice the field disconnect switch into the field "F" as shown.
1. At the regulator
F B A
REGULATOR
DO NOT DISTURB "B" & "A" WIRES
F1 F2
(TO FIELD DISCONNECT SWITCH
TERMINALS F1 & F2)
TO ALTERNATOR
2. At the alternator
F1 F2
ALTERNATOR OUTPUT
DO NOT DISTURB
ALTERNATOR
F R
"F & R" MARKED ON BACK
OF ALTERNATOR WHERE
CONNECTOR PLUGS IN.
DO NOT DISTURB
"R" WIRE
(TO FIELD DISCONNECT SWITCH
TERMINALS F1 & F2)
C. On unitized alternators with built-in regulator - a field disconnect cannot be installed
1. American Boat & Yacht Council, Inc. 2. U.S. Coast Guard 3. N.F.P.A. Perko Inc.
613 Third Street, Suite 10 Washington, D.C. 20593 1 Batterymarch Park 16490 N.W. 13th Avenue
Annapolis, MD 21403 (or your local C.G. office) Quincy, MA 02269 Miami, FL 33169-5707
www.perko.com
11/06
9703INS1
1. American Boat & Yacht Council, Inc. 2. U.S. Coast Guard 3. N.F.P.A. Perko Inc.
3069 Solomon's Island Road Washington, D.C. 20593 1 Batterymarch Park 16490 N.W. 13th Avenue
Edgewater, Maryland 21037 (or your local C.G. office) Quincy, MA 02269 Miami, FL 33169-5707
www.perko.com
10/02
9703INS1
BATTERY
2
NOTE:
Switch terminals No. 1 & 2
are internally connected
together and can be used
interchangeably.
CAT. NO. 9703
BATTERY DISCONNECT SWITCH
WITH ALTERNATOR FIELD DISCONNECT
INSTALLATION AND OPERATING INSTRUCTIONS
For use with alternators and generators rated 6-32 V.D.C. switch rating 480 amperes continuous, 1200 amperes inter-
mittent (15 sec. on, 5 min. off). Locate switch to keep battery cables short as possible. All wiring to the switch shall
be performed by a QUALIFIED MARINE ELECTRICIAN, and in accordance with the "Fire Protection Standard For
Motor Craft, " N.F.P.A.* No. 302, The standards of the American Boat and Yacht Council, Inc.* and the U.S.C.G.* safe-
ty standards for boat electrical systems (33CFR183). If the installation requires operation at the continuous rated
switch capacity (480 AMPS) in engine compartments, then the minimum cable size recommended is 4/0 (200° C insu-
lation). Other cable sizes may be required due to length of run and load, therefore consult engine manufacturer's rec-
ommendations for battery cable size and specifications for the installation.
CAUTION: Always STOP engines before switching to "OFF" position.
Erratic operation, particularly after very long periods of idleness, can be cleared by rapidly switching back and forth
briskly several times without any load connected.
NOTE: If switch is to be mounted in an area subject to corrosion, it is recommended that a liquid electrical coating be
applied to the terminal connections.
Alternator field disconnect is used to break the field current and protect the alternator diodes if the battery switch is
inadvertently turned to the "OFF" position with the engine running.
The following diagram illustrates a typical installation.
COMMON
F1
F2
1
ALTERNATOR FIELD
DISCONNECT
SEE DIAGRAM #2
ENGINE GROUND
STARTER
-
+
DIAGRAM #1
DIAGRAM #2 ALTERNATOR FIELD DISCONNECT
A. Use minimum 14 AWG wire, suitable for marine engine compartments.
B. On systems with a separate voltage regulator, splice the field disconnect switch into the field "F" as shown.
1. At the regulator
F B A
REGULATOR
DO NOT DISTURB "B" & "A" WIRES
F1 F2
(TO FIELD DISCONNECT SWITCH
TERMINALS F1 & F2)
TO ALTERNATOR
2. At the alternator
F1 F2
ALTERNATOR OUTPUT
DO NOT DISTURB
ALTERNATOR
F R
"F & R" MARKED ON BACK
OF ALTERNATOR WHERE
CONNECTOR PLUGS IN.
DO NOT DISTURB
"R" WIRE
(TO FIELD DISCONNECT SWITCH
TERMINALS F1 & F2)
C. On unitized alternators with built-in regulator - a field disconnect cannot be installed
BATTERY
2
NOTE:
Switch terminals No. 1 & 2
are internally connected
together and can be used
interchangeably.