DC Power Supply
DC Regulated Power Supply Operation Manual GP-305 / GP-503 GP-505 / GP-3010 EZ Digital Co., Ltd. SAFETY SUMMARY SAFETY PRECAUTIONS Please take a moment to review these safety precautions. They are provided for your protection and prevent damage to the power supply. This safety information applied to all operator and service personnel. If the equipment is used in a manner not specified by the manufacturer, the protection provided by the equipment may be impaired.
INSTRUCTIONS Thank you for purchasing EZ DIGITAL products. The instruments produced by EZ DIGITAL COMPANY are high products technplogy products made under strict quality control. We guarantee their exceptional precision and utmost reliability. For proper use of this product, please read this manual carefully. EZ Digital Co., Ltd. 1. To maintain the precision and the reliability of the product , use it in the standard setting.
CONTENTS 1. INTRODUCTION 2. FEATURES 3. PRECAUTIONS 3-1. Line voltage selection 3-2. Installation & handling precautions 3-3. Cleaning 4. SPECIFICATION 5. PANEL DECRIPTION 5-1. Front Panel Description 5-2. Rear Panel Description 6.OPERATIONS 6-1. Independent Operation 6-2. Seriall Operation 6-3. Parallel Operation 7. NOTES ON ENVIRONMENTAL CONDITION 8. CURRENT LIMITING CIRCUIT 9.
1. INTRODUCTION GP-305 , 3010 , 503 , 505 series are regulated DC POWER SULLPY units with voltmeter and amperemeter : GP-305 can supply the DC power of 0 to 30V/5A GP-503 can supply 0 to 50V/3A. GP-505 can supply 0 to 50V/5A. They are provided with continuously variable coarse adjustment and the output voltages, and with continuously variable current adjustment in a range of 10 to 100%. Current limiting and overload protection functions are built in to protect the load under any circumstances.
3. PRECAUTIONS 3-1. Line voltage selection This instrument must be operated with the correct line voltage selector switch setting and the correct line fuse for the line voltage selected to prevent damage. The instrument operates from either a 90V to 132V or 198V to 250V line source. Before line voltage is applied to the instrument , make sure the line voltage selector switch is set correctly. In the case of the line voltage selector switch selected , must be operated to the correct line fuse.
4. Do not place liquid-filled containers on top of this instrument. A spill could seriously damage the instrument. 5. Do not use this instrument where it is subject to serve viration,or strong blows. 6.Do not place heavery objects on the case,or otherwise block the ventilation hole 7. Do not use this power supply in strong magnetic fields,such as near motors. 8. Do not insert wires , tools , etc. through the ventilation holes. 9. Do not leave a hot soldering iron near the instrument. 10.
4. SPECIFICATIONS Model GP-305 GP-3010 Output polarity Output current Load Regulation GP-505 Positive & Negative 0 ~5A 0 ~10A Ripple Voltage Line Regulation GP-503 0 ~3A 0 ~5A Less than 3mVpp Less than 0.01% +2mV for power source voltage change of ±10% Less than 0.01% +3mV for load variation of 0 to 100% 0 ~ 30V (F.S) 0 ~50V (F.S) Accuarcy of 2.5% for full scale 0 ~ 5A 0 ~10A 0 ~ 3A 0 ~ 5A Ampermeter Monitor Accuarcy of 2.
[6]
5.DECRIPTION OF PANEL FUNCTION 5-1. Front Panel Description DC POWER SUPPLY GP-505 1 2 3 4 5 10 0 8 A POWER 6 40 50 10 C.V 9 VOLTAGE CURRENT LIMIT ON 30 V C.C 7 20 0 COARSE - GND + FINE 2 OFF 1 3 11 13 12 5 4 1. POWER SWITCH : This switch turns on and off the power. 2. C.V LED : Display LED for static state current & voltage operating. 3. CURRENT VR : The current limiting knob for setting and adjusting the output current in a range of max. 10 ~100% 4.
5-2. Rear Panel Description 4 3 1 2 1. DC FAN 2. SERIAL NUMBER 3. AC INLET 4.
The specifications are subjected to change without notice.
