Download 9703 Instructions

CAT. NO. 9703 BATTERY DISCONNECT SWITCH
CAT. NO. 9703 BATTERY DISCONNECT SWITCH
WITH ALTERNATOR FIELD DISCONNECT
INSTALLATION AND OPERATING INSTRUCTIONS
WITH ALTERNATOR FIELD DISCONNECT
INSTALLATION AND OPERATING INSTRUCTIONS
For use with alternators and generators rated 6-50 V.D.C. switch rating 480 amperes continuous, 1200 amperes intermittent (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.* safety 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 insulation). Other cable sizes may be required due to length of run and load, therefore consult engine manufacturer's recommendations 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.
For use with alternators and generators rated 6-50 V.D.C. switch rating 480 amperes continuous, 1200 amperes intermittent (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.* safety 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 insulation). Other cable sizes may be required due to length of run and load, therefore consult engine manufacturer's recommendations 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:
NOTE:
(1) Locate switch to keep battery cables short as possible.
(2) 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.
(3) Terminal stud size is 1/2 inch. Torque terminal nuts to 21 ft-lbs.
(4) Mounting screw size #10 pan head or round head. Do not over-tighten screws to prevent deforming the switch.
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. See Diagram # 2
The following diagram illustrates a typical installation.
(1) Locate switch to keep battery cables short as possible.
(2) 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.
(3) Terminal stud size is 1/2 inch. Torque terminal nuts to 21 ft-lbs.
(4) Mounting screw size #10 pan head or round head. Do not over-tighten screws to prevent deforming the switch.
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. See Diagram # 2
The following diagram illustrates a typical installation.
ALTERNATOR FIELD DISCONNECT
SEE DIAGRAM #2
ALTERNATOR FIELD DISCONNECT
SEE DIAGRAM #2
STARTER
NOTE:
Switch terminals No. 1 & 2
are internally connected
together and can be used
interchangeably.
DIAGRAM #1
2
STARTER
1
F1
+
F2
NOTE:
Switch terminals No. 1 & 2
are internally connected
together and can be used
interchangeably.
DIAGRAM #1
2
1
F1
+
F2
COMMON
COMMON
-
BATTERY
BATTERY
ENGINE GROUND
ENGINE GROUND
DIAGRAM #2
A.
B.
DIAGRAM #2
ALTERNATOR FIELD DISCONNECT
A.
B.
Use minimum 14 AWG wire, suitable for marine engine compartments.
On systems with a separate voltage regulator, splice the field disconnect switch into the field "F" as shown.
1. At the regulator
1. At the regulator
REGULATOR
F
B
F1
TO ALTERNATOR
F2
2. At the alternator
2. At the alternator
DO NOT DISTURB
"R" WIRE
F2
FR
ALTERNATOR
F1
FR
ALTERNATOR
"F & R" MARKED ON BACK
OF ALTERNATOR WHERE
CONNECTOR PLUGS IN.
ALTERNATOR OUTPUT
DO NOT DISTURB
C. On unitized alternators with built-in regulator - a field disconnect cannot be installed
C. On unitized alternators with built-in regulator - a field disconnect cannot be installed
2. U.S. Coast Guard
Washington, D.C. 20593
(or your local C.G. office)
DO NOT DISTURB
"R" WIRE
F2
(TO FIELD DISCONNECT SWITCH
TERMINALS F1 & F2)
"F & R" MARKED ON BACK
OF ALTERNATOR WHERE
CONNECTOR PLUGS IN.
ALTERNATOR OUTPUT
DO NOT DISTURB
1. American Boat & Yacht Council, Inc.
613 Third Street, Suite 10
Annapolis, MD 21403
A
(TO FIELD DISCONNECT SWITCH
TERMINALS F1 & F2)
(TO FIELD DISCONNECT SWITCH
TERMINALS F1 & F2)
(TO FIELD DISCONNECT SWITCH
TERMINALS F1 & F2)
B
DO NOT DISTURB "B" & "A" WIRES
TO ALTERNATOR
F2
F1
REGULATOR
F
A
DO NOT DISTURB "B" & "A" WIRES
F1
ALTERNATOR FIELD DISCONNECT
Use minimum 14 AWG wire, suitable for marine engine compartments.
On systems with a separate voltage regulator, splice the field disconnect switch into the field "F" as shown.
3. N.F.P.A.
1 Batterymarch Park
Quincy, MA 02269
Perko Inc.
16490 N.W. 13th Avenue
Miami, FL 33169-5707
www.perko.com
3/16
9703INS1
1. American Boat & Yacht Council, Inc.
613 Third Street, Suite 10
Annapolis, MD 21403
2. U.S. Coast Guard
Washington, D.C. 20593
(or your local C.G. office)
3. N.F.P.A.
1 Batterymarch Park
Quincy, MA 02269
Perko Inc.
16490 N.W. 13th Avenue
Miami, FL 33169-5707
www.perko.com
3/16
9703INS1