Marathon SE350E Instruction Manual

SE350
Voltage Regulator
Instruction Manual

A Regal Brand

INTRODUCTION

INSTALLATION

The SE350E voltage regulator is an encapsulated electronic
voltage regulator which controls the output of a brushless AC
generator by regulating the current into the exciter field.

SPECIFICATION SE350E REGULATOR

Sensing (Average) & Power Input 190-240 Vac

Burden 500 VA

Output Power - Continuous 73 Vdc at 3.5 Adc
(255w)

Output Power - Forcing 105 Vdc at 5 Adc (525w)
(240 Vac Input Power)

Regulation 1.0%

Exciter Field Resistance 15 ohms minimum

Remote Voltage ±10% with 2000 ohm
Adjustment Range rheostat
±5% with 1000 ohm
rheostat

Frequency
Compensation Adjustable

Roll Off Frequency 54-61 Hz for 60 Hz
Operation
45-51 Hz for 50 Hz
Operation

MOUNTING

The SE350E voltage regulator can be mounted in any plane.
See Figure 1 for mounting dimensions.

Figure 1

EXCITER POWER CIRCUIT

Connect the regulator wire F+ to the generator F+ or F1 field
terminal. Connect the regulator wire F- to the generator F- or
F2 field terminal. See Figure 2 for typical connection diagram.

Weight 7.4 oz.

Operating Temperature -40°C to 60°C

Storage Temperature -65°C to +85°C

Power Dissipation 8 watts maximum

Size 3.9”Lx2.66”Wx2.20”H

Voltage Build up Internal provisions for
automatic voltage build
up from generator
residual voltage as low
as 10 Vac.

EMI Suppression Internal electromagnetic
interference filter

(EMI Filter).

TO PREVENT PERSONAL INJURY OR EQUIPMENT
DAMAGE, ONLY QUALIFIED PERSONNEL SHOULD
INSTALL, OPERATE, OR SERVICE THIS DEVICE.

DO NOT megger or high-pot the generator
with the regulator connected. DO NOT high-pot the regulator.

Figure 2

SENSING / POWER INPUT CIRCUIT

Input power and sensing is achieved through terminals 3 and

4. The voltage input requirement of the SE350E is 190 to

240 vac.

See Figure 2 for typical connection diagram.

FUSE

A 4 Amp 250V - 5 X 20 mm fuse is supplied with the
regulator (Part A-527066).