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1. etc as well as current output status signals 6310A SERIES PROGRAMMABLE DC ELECTRONIC LOAD FAMILY l 63106A 63108A 63101A 63105A 63112A 63102A 63107A 63110A 63103A 63123A 63113A 63115A 6314A 4in 1 Mainframe 6312A 2 in 1 Mainframe A631001 A631000 A631003 Remote Controller GPIB Interface USB Interface Operating Temperature 0 40 C 0 40 C EE 10 100 200Vac 10 V 47 63Hz 19 100 200Vac 1096 V 47 63Hz P g 10 115 230Vac 10 V 47 63Hz 1 115 230Vac 10 V 47 63Hz 194x275x550mm 194x439x550mm Pinnen re 7 6x10 8x21 7inch 7 6x17 3x21 7inch 15 kg 33 1 Ibs 21 5 kg 47 4 lbs LED LOAD SIMULATOR E As a constant current source the LED power driver has an output voltage range with a constant output current LED power drivers are usually tested in one of the following ways 1 With LEDs 2 Using resistors for loading Ke 3 Using Electronic Loads in Constant Resistance CR mode or Constant Voltage CV mode som 9668 iria EE However all these testing methods each of them has their own disadvantages IH uou ass o b As shown on the V I curve in Figure 1 the LED has a forward voltage VF and a operating resistance Rd When using a resistor as loading the V I curve of the resistor is not able to simulate the V I curve of the LED as shown in blue on Figure 1 This may cause the LED power driver to not start up due to the difference in V I chara2. Amplitude OCP circuitry therefore it is important to test the OCP circuitry to make sure it E is functioning within its designed specifications The 6310A series provides an easy and fast solution for this testing UUT Output Voltage By simply choosing the channel and setting the OCP parameters start current end current step current and dwell time from the front panel the 6310A series provides a fast and easy OCP testing solution The 6310A series will automatically detect the OCP point making it an ideal solution for design verification as well as production line testing Loading Current Time mm Start Current mm Step Current Dwell Time End Current TIMING FUNCTION The 6310A series of loads include a unique timing amp measurement function which allows precise time measurements in the range of 1ms to 86 400s This feature allows the user to set the final voltage amp timeout values for battery Final Voltage discharge testing super capacitor discharge and other similar applications Battery Voltage For example the figure on the right shows the 6310A internal timer starting at IIA Load ON and ending when the battery voltage reaches the final voltage Battery Discharge Testing DIGITAL I O The digital I O interface makes the 6310A DC Load the ideal choice for automated testing requirements Through the digital I O the 6310A can accept digital signals to trigger its functions Load On Off OCP test
3. PROGRAMMABLE DC ELECTRONIC LOAD MODEL 6310A SERIES The Chroma 6310A series Programmable DC Electronic Load is ideal for the test and evaluation of multi output AC DC power supplies DC DC converters chargers and power electronic components It is designed for applications in research and development production and incoming inspection The system is configured by plugging the user selectable load modules into the system mainframe The user interfaces include an ergonomically designed user friendly keypad on the front panel and the following computer interfaces RS 232C USB or GPIB The 6310A series offers 12 different modules with power ratings from 20 watts to 1 200 watts current ratings from 0 5mA to 240A and voltage ratings from 0 5mV to 600V The loads can be operated in constant current constant voltage constant power and constant resistance and may be placed in parallel for increased current and power The 6310A series can simulate a wide range of dynamic loading applications The waveforms USB programmable parameters include slew rate load level duration and conducting voltage In addition up to 100 sets of system operating status can be stored in EEPROM and recalled instantly for automated testing applications Real time measurement of voltage and current are integrated into each 6310A load module using a 16 bit precision measurement circuit The user can perform on line voltage measurements and adjustment
4. 0 025 F S Current Read Back 0 05 0 05 F S 0 05 0 05 F S 0 05 0 05 F S NOTE 1 If the operating voltage exceeds 1 1 times of the rated voltage it would cause permanent damage to the device NOTE 2 S siemens is the SI unit of conductance equal to one reciprocal ohm NOTE 3 Call for availability SPECIFICATIONS 1 20W 20W 30W DO 1 Eh AA ease E ES a A 0 0375Q 150Q 200W 16V 0 0750 3000 100W 16V 0 02502 1000 300W 16V 1 8750 7 5kQ 200W 80V 3 750 15k0 100W 80V 1 250 5kQ 300W 80V EE 6 667mS 200W 16V 3 333mS 100W 16V 10mS 300W 16V 1334S 200W 80V 66 6674S 100W 80V 200uS 300W 80V um 1500 0 15 0 2 3000 0 15 0 296 1009 0 15 0 2 y 7 5kQ 0 015 0 1 15kQ 0 015 0 1 5kQ 0 015 0 1 0 80V 0 80V 0 80V 0 05 0 196F S 0 05 0 1 F S 0 05 0 196F S 0 20W 0 200W 0 20W 0 100W 0 30W 0 300W 0 5 0 5 F S 0 5 0 596F S 0 5 0 5 F S Range C C Mode C C Mode C C Mode 0 025ms 50ms Res bus 0 025ms 50ms Res 5us 0 025ms 50ms Res 5us T1 amp T2 0 1ms 500ms Res 25us 0 1ms 500ms Res 25us 0 1ms 500ms Res 25us 10ms 50s Res 2 5ms 10ms 50s Res 2 5ms 10ms 50s Res 2 5ms Voltage Read Back 0 16V 0 80V 0 16V 0 80V 0 16V 0 80V CH JJ JJ Current Read Back Power Read Back 2 Yes Yes Yes Short Circuit Curent CO AOA ROA OA Mee A A SEE SS ES SEE ESS SSE SS SS Ss Reena O AS SE I
5. 050 50 0 LEDL CL 0 60V 0 5A R 0 8 Q 800 2 LEDL E CL 0 60V 0 5A R 0 80 800 Q Operating Voltage 0 100V 0 500V R Coefficient 0 001 1 V 0 100V 0 500V Current 0 2A Ra 10 1k0 100 10k0 Range Accuracy LEDH CL 0 300V 0 5A Ry 4 O 4k Q LEDH CL 0 600V 0 5A Ry 80 8kQ Vo 4mV 20mV Vo 1 2mV 6mV Vo 1 2mV 12mV lo 0 1mA lo 100UA 400uA lo 100UA 400uA Resolution 2 R Coefficient 0 001 R Coefficient 0 001 R Coefficient 0 001 Rg 62 5uS 6 25uS Ra 400uS 25uS 5uS Ra 400uS 25mS 2 5mS V 4mV 20mV V 1 2mV 6mV V 6mV 60mV DynamicMode Mode Mode 0 025ms 50ms Res 5us 0 025ms 50ms Res 5us T1 amp T2 0 1ms 500ms Res 25us 0 1ms 500ms Res 25us 10ms 50s Res 2 5ms 10ms 50s Res 2 5ms Accuracy Jpus msd0opm us Ims HOOppm O SlewRate 08 200mAys 32 800mA ujs 0 8 200mA gs 32 800mA us Resltion 4 CBM AMS 32mAgs OBmAtus 32mAfs Accuracy 1 106 20us TOW HAWS Min RiseTime as Typical Ss Typical Current AOA 0 5A 0 20 Resolution o 20 TOOUA X 40pgA 10pA 400A Estas 9 1 5 9 0 5075 5 Voltage Read Back 0 100V 0 500V 0 60V 0 300V 0 60V 0 600V 0 025 0 025 F S 0 025
6. 5ms 25ys Typical 6 0 4 F S 0 496F S 0 196 ES Voltage Read Back Range 0 122 V osoo 0 16 V 0 80V J 0 4 0 1200V JI Rang OA O 0 20A 0 24A 0 240A 0 70A Resolution 0 03125mA 0 3125mA 0 375mA 3 75mA 0 125mA 1 25mA 0 05 0 05 F S 0 075 0 07596F S 0 04 0 04 F S Range 0 60W 0 600W 0 120W 0 1200W 0 35W 0 350W 0 1 0 1 F S 0 1 0 1 F S 0 1 0 1 F S Yes Over Voltage Alarm 3 Yes Yes Yes hort Circuit Curnt C E OAC aa OA Voragen v SS SSS SE aa si Resistance CR 50650 0006250 5000 Power cP 1 Som OWE 8SOW NOTE 3 When the operating voltage exceeds the rated voltage for 1 02 times a warning will occur and if it exceeds 1 1 times of the rated voltage it would cause permanent damage to the device NOTE 4 Please refer to user s manual for detail specifications NOTE 5 S siemens is the SI unit of conductance equal to one reciprocal ohm NOTE 6 The loading current should be 0 354 at least SOFTPANEL The 6310A loads can be operated from the front panel controls of mainframe or from available softpanels This user friendly software includes all functions of 6310A and is easy to understand and operate The 6310A can be controlled via GPIB and USB interfaces for remote control and automated testing applications ze IKKKKKKRKKK Ta LED Mode Dynamic Test Battery Test NI HIT OU de Charger Test ORDERING I
7. an 8 channel 100W channel load with standard front panel inputs This makes it ideal for testing multiple output switching power supplies and multiple DC DC converters There are also higher wattage modules that may be mixed and matched for an even more versatile system Additionally the GO NG output port is useful for UUT s pass fail testing on an automated production line All modules on the 6314A 6312A mainframe share a common GPIB address to synchronize and speed up the control of the load modules and the read back of data LaL A T p J T NOTA METELL EBSSESHB CTIE The 6310A load modules operate in constant current constant voltage constant power or constant resistance to satisfy a wide range of test requirements For example the test of a battery charger can be simulated easily by setting the load to operate in constant voltage Constant Current Mode Constant Resistance Mode Constant Power Mode Constant Voltage Mode Each load module is designed with state of the art technology and connects all the power MOSFET devices in parallel to insure high accuracy load control with a minimum drift of less than 0 1 0 1 F S of the current setting Chroma s use of FET technology provides minimum input resistance and enables the load to sink high current even at very low voltages For example the model 63123A is capable of sinking 70A at 0 6V and well suited for testing the new 3 3V low voltage pow
8. producing a maximum slew rate at 10A us and dynamic cycling up to 20kHz It s dedicated remote load sense and control circuit guarantee minimum waveform distortion during continuous load changes MULTI CHANNEL CONTROL peepee cocs 2000 The 6310A comes with RS 232C as standard for remote control and automated testing applications The USB and GPIB interfaces are available as options In addition the 6310A provides an efficient TEE solution for testing single output AC to DC or DC to DC converters by See controlling multiple loads The 6310A provides the capability to test up to 8 UUTs at a time UUT Adaptor POWERFUL MEASUREMENTS m Each 6310A load module has an integrated 16 bit precision A D converter for voltage measurement with an accuracy of 0 025964 0 01596 of full scale The built in resistive load current sensing circuit is capable of measuring current with an accuracy of 0 04964 0 0496 of full scale Apart from voltage and current measurement 6310A also provides power measurement function and there is no need for users to spend time for power calculation Also short circuit can be simulated All measurements are done using remote sensing to eliminate any error due to voltage drops along the measurement path The user can also select from a complete set of voltage and current measurements Note Only for Model 63123A OCP TEST E Modern switching power supplies are designed with over current protection
9. ENS i a Se ee A ONE a BE A Reto EE SE SS Seo Fe nD to possas Input Resistance Q Q Load Off 100k 2 Typical 100k O Typical 100kQ Typical Temperature Range MC amp Safet EE Ei spt NOTE 1 Low voltage operation under 0 8 volt is possible at correspondingly reduced current level Operating temperature range is 0 C to 40 C JJ OM VIA VID rm All specifications apply for 25 C 5 C except as noted NOTE 2 Power F S Vrange ES x Irange F S SPECIFICATIONS 3 ower 60W urrent Voltage 3 Typical Min Operation Voltage DC Rage 10 1 1 02A 0 20A 0 24A 0 240A 0 70A 0 125mA 1 25mA 0 196 0 196F S 0 196 0 296F S 0 196 0 196F S 0 196 0 296F S 0 1964 0 196F S 0 196 0 196F S 0 625 Q 2 5k O 600W 125V 6 25m0 250 1200W 16V 0 0150 1500 350W 24V 4 25Q 100k Q 600W 500V 0 3125 Q 1 25k Q 1200W 80V 2Q 2kQ 350W 120V 10uS 600W 500V 800LS 1200W 80V 10uS 350W 120V 100k Q 5mS 0 196 1 25k Q 0 08S 0 296 2k O 5mS 0 296 Rang OOM BON DIN Range J 0 60W 0 600W 0 120W 0 1200W 0 35W 0 350W 150mW 300mW Accurac 0 5 0 5 F S 0 5 0 5 F S 0 5 0 5 F S C C Mode C C Mode C C MODE 0 025ms 50ms Res 5us 0 025ms 50ms Res 5us 0 025ms 50ms Res 5us T1 amp T2 0 1ms 500ms Res 25us 0 1ms 500ms Res 25us 0 1ms 500ms Res 25us 10ms 50s Res 2 5ms 10ms 50s Res 2 5ms 10ms 50s Res 2
10. Ea A Power CP 1 J J 520W CSC 510W 30W J e Continued on next page gt SPECIFICATIONS 2 30W 60W 30W 30W Voltage DO 1 Range HA 108 9 128 ORAR 0a 1 25 0 5kQ 300W 125V 12 5m Q 500 600W 16V 0 3 Q 1 2kQ 30W 16V 0 03750 1500 250W 16V 50Q 200kQ 300W 500V 0 625 Q 2 5kQ 600W 80V 150 60KO 30W 80V 1 875 Q 7 5kQ 250W 80V 5uS 300W 500V 400uS 600W 80V 16 67uS 30W 80V 13315 250W 80V 200kQ 5mS 0 1 2 5k 0 0 045 0 2 60k 2 0 01S 0 1 7 5k02 0 015 0 1 feet he EEN be Range L 39 208 0 300W 0 60W 0 600W 0 30W 0 30W 0 250W 150mW 62 5mW ae 0 5 0 596F S 0 5 0 596F S 0 5 0 596F S C C Mode C C Mode C C Mode 0 025ms 50ms Res bus 0 025ms 50ms Res 5us 0 025ms 50ms Res 5us T1 amp T2 0 P 500ms ne e 0 e 500ms Ges Se 0 cue 500ms is Ee 50s Res 50s Res 50s Res 0 4 F S 0 4 F S 0 4 F S Voltage Read Back Rang 0 125V 0 50V De 0 80V O 16V 0 80V O t6v BOV EE IE E TI E a Aa E Range o SA 0 10A 0 12A 0 120A 0 016mA 0 16mA 0 1875mA 1 875mA 0 078125mA 0 EA 0 Gs 0 05 0 0596F S 0 05 0 0596F S 0 05 0 0596F S Rang 0 30W 0 300W 0 600W 0 30W 0 30W 0 250W 0 1 0 1 F S 0 1 0 196F S 0 1 0 1 F S Over Power Protection Over Current Protection Over Temperature Protection Over Voltage Alarm 3 hort Circuit Cuni c IS StS A DEE GC GENES
11. Module 500V 2A 100W x 2 63113A Load Module 300V 20A 300W 63115A Load Module 600V 20A 300W Call for availability U S A CHROMA SYSTEMS SOLUTIONS INC 19772 Pauling Foothill Ranch CA 92610 Tel 1 949 600 6400 Fax 1 949 600 6401 http www chromausa com E mail sales chromausa com Worldwide Distribution and Service Network EUROPE CHROMA ATE EUROPE B V Morsestraat 32 6716 AH Ede The Netherlands Tel 31 318 648282 Fax 31 318 648288 http www chromaeu com E mail sales chromaeu com 6310A E 201310 2000
12. NFORMATION i 6312A Mainframe for 2 Load Modules 6314A Mainframe for 4 Load Modules 63101A Load Module 80V 40A 200W 63102A Load Module 80V 20A 100W x 2 63103A Load Module 80V 60A 300W 63105A Load Module 500V 10A 300W 63106A Load Module 80V 120A 600W 63107A Load Module 80V 5A 40A 30W amp 250W 63108A Load Module 500V 20A 600W 63112A Load Module 80V 240A 1200W 63123A Load Module 120V 70A 350W Developed and Manufactured by CHROMA ATE INC MISES SO BRA SJ HEADQUARTERS 66 Hwaya 1st Rd Kueishan Hwaya Technology Park Taoyuan County 33383 Taiwan Tel 886 3 327 9999 Fax 886 3 327 8898 http www chromaate com E mail info chromaate com CHINA CHROMA ELECTRONICS SHENZHEN CO LTD 8F No 4 Nanyou Tian An Industrial Estate Shenzhen China PC 518052 Tel 86 755 2664 4598 Fax 86 755 2641 9620 JAPAN CHROMA JAPAN CORP 472 Nippa cho Kouhoku ku Yokohama shi Kanagawa 223 0057 Japan Tel 81 45 542 1118 Fax 81 45 542 1080 http www chroma co jp E mail info chromaate com A631000 GPIB Interface for Model 6314A 6312A Mainframe A631001 Remote Controller A631003 USB Interface for Model 6314A 6312A Mainframe A631005 Softpanel for 6310A 6330A series A631006 Rack Mounting Kit for Model 6312A Mainframe A631007 Rack Mounting Kit for Model 6314A Mainframe A800042 Test Fixture LED Load Simulator for LED Driver Test 63110A Load
13. como Mom A ch X HMM KEE MED A dic ado Chi eo i Figure 4 LED dimming test Figure 5 63110A dimming test Figure 6 LED driver turn on waveform PANEL DESCRIPTION Load Module Chroma 631024 Shr E IM e AUN 1 a o w CW L a amp UN K vi x Um dm CS diga dida Wa Moda 2 WI Wl WI Rear Panel Mainframe Controller Chroma 63144 D r on 12 13 16 17 18 19 26 21 22 23 EJ LED indicator ES SHORT key To apply a short circuit across the input EJ STATIC DYNA key To select static or dynamic test mode D L R key To select left or right channel of input load 63102A 63107A A B key To select static A or B load other models D V terminal To measure the UUT s output voltage using remote sense D Rotary knob To adjust load setting continuously Load terminal D LCD display 9 LED indicator To display the channel at which load is set 10 CHAN key To select input load channel 11 MODE key To select the operation mode of CC CR CV or CP 12 PROG key For program data setting 13 OCP OPP key Over current protection Over power protection testing 14 RECALL key To recall the front panel input status from memory 15 SAVE key To save the front panel input status into memory 16 SPEC key To set up High Low limits for GO NG test CONF key To set the configuration 18 ON OFF key To enable or disable the load input 19 Up Down key To select
14. cteristic between the resistors and the LEDs When using Electronic Loads the CR and CV mode settings are set for when the LED is under stable operation and therefore is unable to simulate turn on or PWM brightness control characteristics This may cause the LED power driver to function improperly or trigger it s protection circuits These testing requirements can be achieved when using a LEDs as a load however issues regarding the LED aging as well as different LED power drivers may require different types of LEDs or a number of LEDs This makes it inconvenient for mass production testing Chroma has created the industries first LED Load Simulator for simulating LED loading with our 63110A load model from our 6310A series Electronic Loads By setting the LED power driver s output voltage and current the Electronic Load can simulate the LED s loading characteristics The LED s forward voltage and operating resistance can also be set to further adjust the loading current and ripple current to better simulate LED characteristics The 63110A design also has increased bandwidth to allow for PWM dimming testing Figure 4 shows the dimming current waveform of the LED Figure 5 shows the dimming current waveform when using 63110A as a load LED Curve Figure 1 LED V I characteristics pans a a mM e 1 K L t f E i DEN PA PS Se PT EN IN PES EE RA CER EA ESO TEA ER ode A Chia FOY iir
15. er supplies Low voltage operation down to zero volts is possible at reduced current levels The 6310A load module uses a photo coupler for isolation between the output and control sections thus each load is isolated and floating The user can use multiple load modules independently to test multi output power supplies or parallel them for high power testing applications SC Low Voltage Characteristics Typical EL II LE Model 63101A 63102A 63103A 63106A 63112A 63123A 120 240 100 Sech 200 P 180 7r 160 60 140 50 120 do 100 80 20 e 60 So T 40 E E 8 10 9 20 s O O 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 1 0 1 1 1 2 1 3 2 916 10 20 30 40 50 60 70 Current A Voltage V A Note All specifications are measured at load input terminals Ambient Temperature of 25 C DYNAMIC LOADING AND CONTROL Modern electronic devices operate at very high speeds and require Load 1 fast dynamic operation of their power providing components To satisfy these testing applications the 6310A loads offer high speed rise rate fall rate programmable dynamic load simulation and control capability The figure aside shows the programmable parameters of the 6310A Load 2 modules pe TI gt T2 The programmable slew rate makes the simulation of transient load change demanded by real life applications possible The 6310A internal waveform generator is capable of
16. s or simulate short circuit test using the user friendly keypad on the front panel Additionally the 6310A series offers an optional remote controller for automated production lines The 6310A series has a self diagnosis routines to maintain instrument performance It also provides OC OP OT protection and alarm indicating OV reverse polarity to guarantee quality and reliability for even in the most demanding engineering testing and ATE applications GPIB RS 232C Programmable DC Electronic Load MODEL 6310A SERIES Key Features ll Max Power 200W 100W X 2 Dual 30W amp 250W 300W 350W 600W 1200W lll Wide range 0 600V operating voltage ll Compatibility between 6310 and 6310A Bl Up to eight channels in one mainframe for testing multiple output SMPS W Parallel load modules up to 1400W for high current and power applications Bl Synchronization with multiple loads lll Flexible CC CR CP and CV operation modes EE Dynamic loading with speeds up to 20kHz MM Fast response of 0 32mA us 10A us slew rate Bl Minimum input resistance allows load to sink high current at low voltage 63123A 0 6V 870A lll Real time power supply load transient response simulation and output measurements lll User programmable 100 sequences Front panel input status for user friendly operation lll High Low limits of testing parameters to test GO NG Digital 1 O control Over current protection OCP testing function 16 bi
17. t precision voltage and current measurement with dual range lll Remote sensing capability W Short circuit test W Self test at power on W Full Protection OC OP OT protection and OV reverse alarm lll USB GPIB amp RS 232C interfaces VERSATILE SYSTEM CONFIGURATION Chroma 6310A Programmable Electronic Load integrates microprocessor capabilities into each load module and mainframe to provide simple and accurate parallel operation to optimize the speed and control among multiple load modules All load modules may be configured to work synchronously to test multiple outputs simultaneously thus simulating real life applications 6310A System Block Diagram POWER SUPPLY FAN CONTROL KEYBOARD LCD DISPLAY mr ucoo OHAOLNV Zeg RS232 INTERFACE GPIB INTERFACE USB INTERFACE ibi HU EG A ZO 3 roo DIGITAL 1 0 CONTROL COMPATIBILITY WITH 6310 SERII 3 The 6310A series load modules will be compatible with the 6310 series mainframes 6312 6314 In addition the remote control commands will be compatible between the 6310 and the 6310A series without needing to re writing any remote control programs MODULE LOAD DESIGN The Chroma 6314A 1400W and 6312A 700W electronic load mainframes accept the user installable 6310A series load modules for easy system configuration and will mount in a 19 instrument rack The 6314A holds up to four 63102A load modules which will result in
18. the next or previous display in edit mode 20 Numeric key For data setting 21 ENTER key To confirm editing data on the instrument 22 SHIFT key As LOCAL key when in remote mode 23 Power switch 24 SHIFT 0 key System function 25 SHIFT key Lock function 26 SHIFT 3 key Clear the currently edited data Digital 1 O Used for system input output control signals 28 RS 232C connector 29 GO NG output port EL GPIB or USB slot 31 AC input voltage switch E AC input fuse EH AC input connector SPECIFICATIONS LED LOAD SIMULATOR 0 5A 0 0 6A 0 20A 0 20A 120A 40pA 100pA 400uA 100pA 400uA 0 1 0 1 F S 0 1 0 1 F S 0 1 0 2 F S 0 1 0 1 F S 0 1 0 2 F S CRL E CH 0 2 Q 200 Q 300W 60V CRL E CH 0 2 Q 200 Q 300W 60V 30 1k0 Range Eus E O Su SE Ge CRL CL 0 8 Q 800 Q 300W 60V CRL CL 0 8 Q 800 300W 60V i CRH CL 4 Q 4k Q 300W 300V CRH CL 8Q 8kQ 300W 600V CRL CH 100uS CRL CH 100uS Resolution 2 Sie i Redes CRL CL 25uS CRL CL 25uS dinis CRH O CL Su CRH O CL 2 5uS 1kQ 4mS 0 2 O i o a MO nO 0 2 setting range 0 2 setting range 0 500V 0 300V 0 600V Accurac 0 05 0 196F S 0 05 0 196F S 0 05 0 1 F S Operating Voltage 0 60V 0 300V Operating Voltage 0 60V 0 600V R Coefficient 0 001 1 R Coefficient 0 001 1 V 0 60V 0 300V V 0 60V 0 600V LEDL CH 0 60V 0 20A R 0 05 2 50Q LEDL CH 0 60V 0 20A R4 0
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