DC POWER SUPPLY GR-MIDDLE SERIES (ANALOG / DIGITAL TYPE) SAFETY TERMS AND SYMBOLS These terms may appear in this manual or on the product: WARNING. Warning statements identify condition or practices that could result in injury or loss of life. CAUTION. Caution statements identify conditions or practices that could resit in damage to this product or other property.
CONTENTS SECTION 1. INTRODUCTION 1 2. SPECIFICATIONS 21 Genera! © 22 Constant Voltage Operation Constant Current Operation Indicator Meter. . 25 |Insulation . PANEL CONTROLS AND INDICATORS. . 4.1 Front Panel Rear Panel. OPERATION INSTRUCTIONS. 51 Precaution, 8.2 Setting Current Limit. 6.3 Constant Voltage/Constant Current Characteristic . 54 Operation Mode MAINTENANCE. .. . it mitt sty 81 Fuse Replacement 682 Line Voltage Conversion. Adjustments .
1. INTRODUCTION The regulated DC power supply have been designed to provide the most often required in the laboratory, schools and production sines. The output voltage is continuously adjustable between O to rating voltage in one range by means of a coarse and fine apportionment, the {oad current may have any value from O 1o rating current and adjusted by means of a coarse and fine apportionment.
2. SPECIFICATIONS 2.1 General Main supply 100V/120V/220V/240V + 10 % 50/80 Hz (Switch delectable) Rating, dimension and weight see Table 21 Table 21 oD Max.
Constant Voltage Operation Output voltage ranges o-rating voltage continuously adjustable. Voltage regulation fine road regulation toad {=10A} Recovery time < 100us. (50% load change, minimum load 0.5A} Ripple & Noise < 1mV rms {BHz~1MH2) Temperature coefficient <300PPM/°C Constant Current Operation Output current range 0 to rating current continuously adjustable. Current regulation fine regulation < goad regulation < Ripple current € 3mA rms indicator Mater Digital Type Display: 3% Digits 0.
28 Insulation Between chassis and output terminal 20M$2 or above (DC 50OV} Between chassis and AC cord 30ME2 or above {DC 500V} 3.
4. PANEL CONTROLS AND INDICATORS 4-1 Front panel CV indicator CC indicator Voltage coarse Voltage fine Current coarse Current fine SLOGGED {73 "+ output terminal 8} “GND" terminal 8y " output terminal 99 Voltmeter 1)} Ammeter 42 Power control Fuse holder 14) Power cord A5 HOLE switch 4.2 Rear pane 46 AC selects switch lights when the power turn on and constant voltage operation, fights when this unit in constant current operation. for the coarse adjustment of the output voltage.
P 99 9 LABORATORY DC POWER SUPPLY 3100 COARSE CURRENT c.C. O GUINNESS G PR-6030D 600 COARSE cv. VOLTAGE 08OV, 034 12 6 518 8 74 3 Fig. 4.
9?9 7 LABORATORY DC Power surly FINE @ COARSE FINE COARSE LV, ® VOLTAGE OFF GO & Fig. 4-2 Front Panel {Analog Type) B .
over OPERATION INSTRUCTIONS Precaution AC input AC input should be within the range of line voltage & 10% 50/60Hz. WARNING. To avoid electrical shock, the power cord protective grounding conductor must be connected to ground. Installation Avoid using the supply in a place where the ambient temperature exceeds 40°C. The heat sink located at the rear of the supply must have sufficient air space for radiation. CAUTION.
increases in load, The crossover point is indicated by the front panel LED indicators. The crossover point is reached when the CV indicator goes off and the CC indicator comes an, X Constant Portent e, | o Rigger Io Max AN " Curiousness Pt Outfit st Voltage s Bugatti Current Fig. 5-1 Constant Voltage/Constant Current Characteristic. Similarly, crossover from the constant current to the constant voltage mode automatically occurs from a decrease in sold.
2 A. Set Power switch to “OFF " position. B. Make sure that line voltage is correct for the input power voltage. C. Plug power cord into the power outlet. D. Set Power switch to “ON” position. E. Adjust “Voltage” and ‘Current's’ control to the desired output voltage and current. F, Connect the external sold to the output binding posts, Make sure both 4" and terminals are connected correctly. Series Operation Two power supplies may be connected in series to provide higher voltage and rating current output.
6. MAINTENANCE WARN The following instructions are for use by qualified personnel only. To avoid electrical shock, do not perform any servicing other than contained in the operating instructions unless you are qualified Fuse Replacement if the fuse blows, the CV or CC indicators will not light and the power supply will not operate. The fuse should not normally open unless a problem has developed in the unit.
1f readjustment is required, use the following procedure. Locations of the adjustments are shown in Fig, 6.1 and FIG. 6.2, {1} Adjustment of the Rating Voltage A. Connect an accurate external mufti meter to measure the de voltage at output terminals of the power supply. Set the COARSE and FINE VOLTAGE controls to minimum {fully counterclockwise. Adjust trimmer pot VR204 for a reading of 0 volts on the multi meter, Turn the COARSE and FINE VOLTAGE controls to maximum (fully clockwise}.
EC Declaration of Conformity We GOOD WILL INSTRUMENT CO., LTD. Singsonging Road, Chengdu City, Taipei County 236, Taiwan GOOD WILL INSTRUMENT (SUZHOU) CO., LTD No.
