This unit designed for fuselage mounting. To be protected from water, except condensation.
Mount on a metallic airframe member for secondary ground.
Alternator Inop. will not warn if protective device A is open and alternator is still operating.
A short from ALT+ to FIELD+ of either machine will result in uncontrolled overvoltage on the
main bus which can be removed only by opening protective device A of the faulted machine.
Internal fuse in B-00372-1 will open.
In a split bus system, opening of bus tie must also result in opening of the equalizer in order to
maintain normal individual operation of controls.
Overvoltage protection is incorporated which latches off regulator output following an
overvoltage event
This unit is protected against damage due to output (Field) short to ground. A short will latch off
the output until reset.
Reset of latch off caused by either overvoltage or shorted output is accomplished by momentary
turn off of 28V supply.
In an operating system (2 units with equalizer connection), an excess current in one shunt due
to an overvoltage condition in that side will cause the opposite side overvoltage sensing to be
desensitized so that the side causing the overvoltage will be selectively tripped. Excess shunt
current then falling to zero will permit the normal side overvoltage sensitivity to restore to its
calibrated value.
Left and right alternator systems are independent of each other except for the equalizer
connection. The equalizer connection will not cause a failure in one system to disable the other
normal system.
The equalizer circuit may be faulted to either ground or the bus with no damage resulting in
either system; however, balancing action and selectivity of overvoltage protection will be lost. In
event of the equalizer faulted to the bus, system voltage will increase to the limit of balancing
circuit control authority (less than 1.0V), and overvoltage operating point in both systems will be
elevated to the value provided for selective trip action (approximately 2V above the overvoltage
trip calibration point).
When used with an operating alternator, never bypass the regulator (Bus to Field) as a means of
checking alternator integrity or the overvoltage protection circuit action.
Caution: for each control the voltage source for regulator input and sense terminal must be the
load terminal of the related shunt, with no means provided which can result in any other source
of voltage being applied to these terminals. A dangerous condition with extensive damage to
the control may result from not observing this requirement.
Unit chassis is internally connected to black ground.
Contactor output is internally protected from damage if it is shorted to ground.
Shunt leads of orange and yellow circuits of B-00372-1 should be twisted pair and run physically
separated from other circuits where possible.
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Product Attributes:

Applicable Regions: ALL

Brand: Lamar

Bundle Description: N/A

California Prop 65 Warning: N/A

Compatible Make: VARIOUS

Compatible Model: VARIOUS

Country/Region Of Manufacture: United States

Custom Bundle: No

Manufacturer Part Number: B-00372-1

Modification Description: N/A

Weight (lbs.): 0.94 lb

Length (in.): 7

Width (in.): 7

Height (in.): 5