Manson Engineering Industrial EP-907 User manual

EP-900 SERIES DC REGULATED POWER SUPPLY
USER’S MANUAL
I. GENERAL
EP-900 Series DC Regulated Power Supply is a completely solid state, compact, well
regulated, constant voltage power supply suitable for service field, hobby & especially for
telecommunication equipment use. For safety purpose, a three-wire power cord is provided.
II. FEATURES
1. Overload and Short Circuit Protection: Prevent the unit from overload and short circuit.
When the unit is under the condition of overload or short circuit, the output current will
be limited.
2. Two different output terminals are provided: Easy Snap on output terminals for small
current output and screw-on output terminals.
III. FRONT AND REAR PANELS
1. ON/OFF Switch 7. Screw-On Output Terminal
2. Power Indicator 8. Output Voltage Adjust Knob
3. Voltmeter 9. Cooling Fan Air In-take Window
4. Ammeter 10. Fuse Holder
5. Overload Indicator 11. Power Cord
6. Easy Snap-On Output Terminals
IV. OPERATION
A. Installation:
1. Place the unit in a location where allows free air circulation.
2. DO NOT place the unit in high humid, dusty and/or sunshiny places.
3. The input power source must be ±5% of the rated input voltage.
B. Caution:
1. DO NOT use the unit for equipment that requires higher current ratings than the unit is
designed for, otherwise damage could occur to the unit.
2. DO NOT replace the fuse before ceasing the problems and assigned value of fuse must
be used in place.

C. Safety Precautions:
The following precautions MUST be read carefully to prevent from electric shock.
1. NEVER remove the metal cover of the power supply while power source is connecting.
2. NEVER touch the power supply when your hand is wet.
3. NEVER operate the power supply if foreign materials such as metallic objects, water or
other debris have fallen inside. Contact your dealer for check and repair.
4. NEVER operate the unit that was being damaged. As the voltage regulation circuitry
may have been disabled, the resulting high DC voltage could cause damage to your
equipment.
5. NEVER allow foreign objects to touch the output terminals.
6. If you have the need to inspect the interior of the power supply, be contained to let it
cool down completely, as some components may be hot enough to burn your hands in
event of component failure (People other than professions are not recommend to check
the interior yourselves.)
7. NEVER block the air intake window.
D. Output Current:
The current of the unit is depended on the output voltage as the following curve.
E. Connection and Operation:
1. Turn OFF the unit and the equipment.
2. Connect the equipment to the unit. Positive polarity to red (+) and negative polarity to
Black (−).
3. Turn ON the unit first and then turn ON the equipment.
4. When an operation is finished, turn OFF the equipment first and then turn OFF the unit.
V. SPECIFICATIONS
Model Number: EP-907 EP-912 EP-920 EP-925
Output Voltage: 3-15V DC
Output Current (Continuous): 6A 12A 18A 25A
Output Current Limit: 7A 15A 20A 30A
Ripple & Noise: <10mVr.m.s.
Line Regulation: 15mV
Load Regulation (0~100% Load): 40mV 60mV 80mV 100mV
Power Source: 230Vac/50Hz (120Vac/60Hz or on request)
Meters Type: ANALOG METERS
Cooling Fan: NO YES
Dimension (W×H×D)/mm: 150 ×145 ×200 150 ×145 ×300
Weight (Approx.): 3.3 Kg 5.5 Kg 7 Kg 9Kg
Accessory: Instruction Sheet
7673-0900-0001
02 4 6 8 10 12 1415
10
20
30
Output Current (A)
Output Voltage (V)
EP-925
EP-920
EP-912
EP-907