1-1
The Electronic Manual Voltage Control (MVC-300) is used as a back-up control device to provide
manual voltage control in case of voltage regulator failure. The unit can be mounted on a control
panel in ground vehicles, stationary equipment or shipboard locations.
The MVC-300 is a solid-state device enclosed in a metallic dark grey chassis and designed to be
'through-the-panel' mounted with controls accessible to an operator from the front of the panel. A
terminal strip located on the rear of the device facilitates installation and operation. A MANUAL
VOLTAGE ADJUST control and an AUTO-OFF-MANUAL voltage control mode switch are provided
on the front panel.
Table 1-1 provides the electrical and physical specifications of the MVC 300.
Table 1-1. Specifications.
Input Power:
120 Vac, + 10%Single-Phase, 50-320 Hz.
240 Vac, + 10%Single-Phase, 50-320 Hz.
Output Adjustment
Range:
120 Vac Input:
240 Vac Input:
1 to 32 Vdc or 1 to 63 Vdc.
1 to 63 Vdc or 1 to 125 Vdc.
Watts Dissipated:
30 W maximum.
Minimum Residual
Voltage for Build-
up:
6 Vac.
Ambient Operating
Temperature:
-40
°
F (-40
°
C) to +158
°
F (+70
°
C)
Ambient Storage
Temperature:
-85
°
F (-65
°
C) to +212
°
F (+100
°
C)
Shock
Withstands up to 15 G's in each of three mutually perpendicular axes.
Vibration:
Withstands the following:
5 - 27 Hz @ 1.3 G's,
27 - 52 Hz @ 0.036" double amplitude,
52 - 500 Hz @ 5 G's.
Weight:
3.0 lbs. (1.36 kg) net, 5 lbs. (2.26 kg) shipping.
SECTION 1
GENERAL INFORMATION
1-1. PURPOSE
1-2. OVERALL DESCRIPTION
1-3. SPECIFICATIONS