User`s Manual
Contents
1. Reset the millisecond counter 13 by pressing the RESET button 25 Pressing the FREQUENCY SETTING push button 9 the fault frequency data is stored on the memory and the output frequency is switched to the fault one and at the same time the millisecond counter 13 starts NOTE Before pressing the FREQUENCY SETTING push button 9 we have to be sure to press the RESET button 23 of MCS 5000 13 As the relay picks up the millisecond counter stops and the END light 24 turns on we will find pickup timing for threshold lt F on the millisecond counter Next we find drop off timing for threshold lt F From the last frequency above switch it to the nominal frequency as follows Put the nominal frequency value on the FREQUENCY digital switch 10 Reset the millisecond counter 13 by pressing the RESET button 25 Pressing the FREQUENCY SETTING push button 9 the nominal frequency data is stored on the memory and the output frequency is switched to the nominal one NOTE Before pressing the FREQUENCY SETTING push button 9 we have to be sure to press the RESET button 23 of MCS 5000 13 As the relay resets the millisecond counter stops and the END light 24 turns on we will find drop out timing for threshold lt F on the millisecond counter TEL DENSOKU TECHNO ry2005 m doc 12 21 The second session is measuring pickup timing for threshold F lt From the last frequency that is2. circuit breaker in order to preserve the generator safety The test is performed by switching the frequency using both the digital switch and the push button that allow setting the output frequency We will take advantage of modifying frequency bit by bit and also of pre fault and fault setting so that Pre fault output is set at standard or nominal voltage and nominal frequency Fault output voltage has the same amplitude but frequency is only modified according to our test During the test the relay is powered with standard or nominal voltage amplitude as the frequency changes amplitude and phase are not affected 3 2 Preliminaries Refer to the front panel explanation on the last page and the connection schematic on the next page Confirm that both the POWER switch 4 and the OUTPUT switch 7 are OFF Set the doubled knob OUTPUT ADJ COARSE and FINE 8 completely counter clockwise Confirm that the LINE switch 14 on MCS 5000 13 is ON Confirm that the binding posts 12 are connected to the START binding posts 15 on MCS 5000 13 Connect the mains supply cable to the AC INPUT inlet socket 1 and the other terminal plug to power supply source outlet 240Vac Connect the relay to the OUTPUT binding posts 5 Connect the STOP binding posts 17 on MCS 5000 13 to the pickup of the relay Power on RY 2005 acting on switch 4 the power light 3 turns on and also the DVM 11 and mil
3. 4 1 2 Preli Marie ci eni SN BENER eee e ee aa a stench 13 4 1 3 Connection schematic oooooooooWommnnnennnnnanllnnaa 14 4 1 4 Threshold voltages pickup and drop out oooocx 15 4 1 5 Delay times for pickup and drop out oocaaaaa 17 4 2 Frequency meter for external use 20 4 3 Millisecond counter for external use ooooonnnanaananaa 20 5 SRESIFIGATIONS en naa RN BN 20 G6 ACCESSORIES 2 ooutumanunusumummmumummumunsmusngm usa 21 DENSOKU TECHNO ry2005 m doc 3 21 SAFETY INSTRUCTIONS Attention The RY 2005 frequency relay test set hereafter described is manufactured and tested according to its specifications and when used for normal applications and within the normal electrical limits it will not cause hazard to health and safety provided that it must be operated by trained personnel only Would the test set be used beyond its specified limits the safety of the test set could be impaired Before starting the test set up carefully read the following safety instructions The test set must not be put into operation without full knowledge of this information For your safety Mains supply power supply characteristics are Voltage 240VAC 10 50 60Hz Power consumption 100VA maximum v Do not operate the test set if not connected to ground because of filter capacitors the case would grow to a voltage equal to the half of the supply i
4. NOTE read value is the voltage as relay resets This corresponds to the relay threshold only if the voltage did not change very much while the relay timing elapsed however reset timing is usually short so voltage does not change very much at release and the measurement is accurate If threshold measurement was not good because you were moving too fast do repeat the test The second session is finding pickup threshold V lt From the last voltage above decrease the voltage close by the nominal or standard voltage After this slowly decrease the voltage As the relay picks up immediately stop to decrease the voltage We will find pickup threshold V lt on the DVM display NOTE read value is the voltage as relay trips This corresponds to the relay threshold only if the voltage did not change very much while the relay timing elapsed however trip timing is usually short so voltage does not change very much at release and the measurement is accurate If threshold measurement was not good because you were moving too fast do repeat the test TEL DENSOKU TECHNO ry2005 m doc 17 21 Next we find drop off threshold for V lt From the last voltage above very slowly increase the voltage As the relay resets immediately stop to increase the voltage We will find drop out threshold for V lt on the DVM display NOTE read value is the voltage as relay resets This corresponds to the relay threshold o
5. User s Manual 2214 Frequency Relay Test Set Frequency Relay Tester Model RY 2005 Inserted drawing General View 02920 Circuit Diagram 0269 121L Appended Instruction manual 7433 for mounted MCS 5000 Millisecond counter Frequency meter First published July 22 2005 DENSOKU TECHNO DENSOKU TECHNO Co Ltd Nihon Denki keiki Kentei sho Building Bekkan no 2 3F 4 14 13 Shibaura Minato ku Tokyo 108 0023 Japan TEL 81 3 5439 6801 E mai dtec densokutechno co jp FAX 81 3 5439 0566 http www densokutechno co jp ry2005 m doc 2 21 TABLE of CONTENTS SAFETY INSTRUCTION Si aah ben RN oa 3 Atenton aa Be a sus sung 3 FOr YOUT safety coeire an Sis BG EE mma 3 If the mains fuse must be replace 4 1 INTRODUCTION 05035020 ccci adan dosh cada lash dads amankan aah aah 5 FEATURES wine aa mana ana aa aa Rai 5 2 THE FRONT PANEL EXPLANATION ooooococo Wo mna 6 3 OVER UNDER FREQUENCY RELAY TESTING oo 7 Sel Introduction 3 ane teeca nah beeen Bes he a a A TS 7 3 2 Preliminaries Ah an nan 7 3 3 Connection schematic ecccccceccscsesseseessesesencecseeceecseseseseseseeeeceeeseeeaeaeeseeeceecataceeaeeeeeeeees 8 3 4 Threshold frequencies pickup and drop out oa 9 3 5 Delay times for pickup and drop out ocakankan 11 4 OTHERS TESTING kei xin enonamaaa en pundak 13 4 1 Over and under voltage relay 13 AVA Introd ction ii ine Rae NB sus BKB 13
6. above adjust the amplitude of output voltage to the nominal value by using the doubled adjuster knob 8 under the OUTPUT switch is OFF Turn the OUTPUT switch ON the nominal voltage is supplied to the relay under test and the START 15 of millisecond counter 13 Reset the millisecond counter 13 by pressing the RESET button 25 the STANDBY light 23 turns on Turn the OUTPUT switch 7 OFF the nominal voltage that was supplied to the relay under test and the START 15 of millisecond counter 13 is cut off and on the instant the counter starts NOTE Before turning the OUTPUT switch OFF we have to be sure to press the RESET button of MCS 5000 As the relay picks up the millisecond counter stops and the END light 24 turns on we will find pickup timing for threshold V lt on the millisecond counter Next we find drop off threshold for V lt In keeping the fault state that is zero voltage output above reset the millisecond counter 13 by pressing the RESET button 25 the STANDBY light 23 turns on And then turn the OUTPUT switch 7 ON the nominal voltage is supplied to the relay under test and the START 15 of millisecond counter 13 and on the instant the counter starts NOTE Before turning the OUTPUT switch ON we have to be sure to press the RESET button of MCS 5000 As the relay resets the millisecond counter stops and the END light 24 turns on we
7. e 120 V Besides in this situation there is no filtering against common mode noise coming from the mains this can cause sudden faults This type of faults is not covered by the warranty The connection to ground is provided through the mains supply cable however for added safety the test set should be connected to ground using the dedicated guard post v If the ground is not available at the mains supply connect the test set to ground using the dedicated guard post DIEL DENSOKU TECHNO ry2005 m doc 4 21 v v v v v v A The generator outputs supply voltages up to 300Vac that may be lethal to the operator Besides in order to avoid any danger in case of fault inside the test set the test object should have the following characteristics Input circuits must have an isolation degree at least equal to the one of the test set Do not leave the generator cables open When connecting and disconnecting the test object make sure that generator output have been turned off Never disconnect the test object when output switch is ON Never insert conductive parts screwdriver ete into the binding posts or sockets Do not operate in a wet or humid environment Do not operate where an explosion hazard exists Do not operate if you suspect that a fault exists In this case of doubt please contact your Seller however the Seller and Manufacturer declines any and all responsibility due to improper usag
8. e or any usage outside the specified limits If the mains fuse must be replaced Mains fuse of RY 2005 test set v v v v v v v In the FUSE holder on the front panel a fuse rated 1A 250V In the fuse housing of the mains supply cable plug a fuse rated 13A 250V Turn the POWER switch OFF Turn the OUTPUT switch OFF and return the COARSE and FINE knobs of OUTPUT ADJ completely counter clockwise Disconnect the mains supply cable plug from the power source plug outlet Remove the top of FUSE holder and replace the fuse Re connect the mains cable plug to the plug outlet and turn the POWER switch ON If the mains POWER lamp does not turn on return the POWER switch OFF and disconnect the mains supply cable plug once more again Remove the fuse housing cover of the mains supply cable plug and replace the fuse DENSOKU TECHNO ry2005 m doc 5 21 1 INTRODUCTION The RY 2005 frequency relay test set is suited for the testing and adjustments of the frequency relays The test set can measure easily the threshold values the pickup and the drop out frequencies and the delay times at the pickup and the drop out of the frequency relays And besides the test set can also be used to test some frequency meters and some voltage relays Switching the frequency is performed with the aid of the digital setting switch and the setting push button When pressing th
9. e SETTING push button the output frequency is switched from one to the other that set on the digital switch at the zero crossing of the waveforms Output voltage can be adjusted by the doubled knob of coarse and fine FEATURES Power supply 240Vac I phase 50 60Hz Low distortion output waveform 2 and less High stability output voltage and frequency for supply fluctuation Pressing frequency setting button in an instant output frequency switches from the pre fault one to the fault one that set on the digital switch When frequency is switched millisecond counter starts counting the delay time of relay and stops that by getting the pickup signal of relay Easy and simple output voltage adjustment reading value on the DVM display acting on the doubled adjuster knob of coarse and fine Available on the test of over and under voltage relays and some frequency meters Protection to avoid damage for over load short circuit output or miss operation TEL DENSOKU TECHNO ry2005 m doc 6 21 2 THE FRONT PANEL EXPLANATION 28 29 30 232425 27 26 D a a O oOu nn ee La OVER ie OUTPUT A w polo seme lt 2 Sua SE Bl 1248 AC FREQUENCY FREQUENCY SETTING came oye OUTPUT PONER SWITCH SO OO He D D SG OFF OFF 1 TEC DENSOKU TECHNO FREQUENCY RELAY TEST SET RY 2005 B D Descriptio
10. elect the STOP mode 22 of MCS 5000 according to the object relay TEL DENSOKU TECHNO ry2005 m doc 14 21 Select the MEAS mode 20 of MCS 5000 on TIME Select the FUNCTION mode 21 of MCS 5000 on INTERVAL 4 1 3 Connection schematic The following is the connection schematic DIEC DENSOKU TECHNO pounce to AG INPUT ower source Ne OVER LOAD OUTPUT DAY AC NISSTART ia OSTANDBY STOP r 4 oS a T oms CEND N y i RESET OU 7 c 1 5 POSTARE MEAS FUNCTION MO STOP m HX S pe QoouTACT OTIME inrenval Ocontaci S GUARD ON Sae voti O frea Oa voty SUARD G Doa 00 E y OFF are MCS 5000 MILLISECOND COUNTER OUTPUT ADJ FREQUENCY FREQUENCY SETTING comse FINE OUTPUT POWER SWITCH f r N x ON ON EE f N sll olo G team Hz Na U U J OFF OFF MIN MAX Der DENSOKU TECHN FREQUENCY RELAY TEST SET RY 2005 PICKUP INPUT Connect to DC source OVER UNDER VOLTAGE RELAY ry2005 m doc 15 21 4 1 4 Threshold voltages pickup and drop out Voltage output frequency must be set by using the FREQUENCY digital switch 10 and FREQUENCY SETTING push button 9 Puta frequency value on the FREQUENCY digital switch 10 Pressing the FREQUENCY SETTING push button 9 the new frequency data is stored on the memory and the output frequency is switched to new one Set the output frequency the nominal value After thi
11. ing pickup threshold F lt From the last frequency above decrease it close by lt F but higher by jumping the frequency setting and after continuous to test by means of step by step or bit by bit or digit by 1 digit NOTE Before pressing the FREQUENCY SETTING push button 9 we have to be sure to press the RESET button 23 of MCS 5000 13 As the relay picks up the millisecond counter stops and the END light 24 turns on we will find pickup threshold F lt but we don t have to read the time on the millisecond counter Next we find drop off threshold for F lt From the last frequency above increase it by means of 1 digit by I digit NOTE Before pressing the FREQUENCY SETTING push button 9 we have to be sure to press the RESET button 23 of MCS 5000 13 As the relay resets the millisecond counter stops and the END light 24 turns on we will find drop out threshold for F lt but we don t have to read the time on the millisecond counter TEL DENSOKU TECHNO ry2005 m doc 11 21 3 5 Delay times for pickup and drop out Set the output frequency the nominal value by using the FREQUENCY digital switch 10 and FREQUENCY SETTING push button 9 After this the nominal frequency have to be generated as the pre fault one prior to pickup tests The first session is measuring pickup timing for threshold lt F Put a fault frequency value on the FREQUENCY digital switch 10
12. isplayed on the DVM window 11 The standard value is computed from the nominal relay phase to phase voltage Vn V pre fault V fault Vs VN 1 73 The standard values Vs are 57 8 V for VN 100 V 63 5 V for VN 110 V After this adjustment the standard or nominal voltage is generated through all tests Fn Nominal frequency F lt Fn lt F f The first session is finding pickup threshold lt F Increase the frequency step by step or bit by bit but it is to be desirable that in the last resort we have to change the setting I digit by 1 digit to gain the reliable test results NOTE Before pressing the FREQUENCY SETTING push button 9 we have to be sure to press the RESET button 23 of MCS 5000 13 As the relay picks up the millisecond counter stops and the END light 24 turns on we will find pickup threshold lt F but we don t have to read the time on the millisecond counter TEL DENSOKU TECHNO ry2005 m doc 10 21 Next we find drop off threshold for lt F From the last frequency above decrease it by means of I digit by I digit NOTE Before pressing the FREQUENCY SETTING push button 9 we have to be sure to press the RESET button 23 of MCS 5000 13 As the relay resets the millisecond counter stops and the END light 24 turns on we will find drop out threshold for lt F but we don t have to read the time on the millisecond counter The second session is find
13. lisecond counter MCS 5000 13 turn on TEL DENSOKU TECHNO ry2005 m doc 8 21 Select the START mode 19 of MCS 5000 on CONTACT as the internal start signal 66 99 of RY 2005 is a contact Select the STOP mode 22 of MCS 5000 according to the object relay Select the MEAS mode 20 of MCS 5000 on TIME Select the FUNCTION mode 21 of MCS 5000 on INTERVAL 33 Connection schematic The following is the connection schematic Connect to OVER LOAD OUTPUT A INPUT Ai aa SIAR s ostanpBy STOP Noa TN AS A 2 gt f N Aa A FUSE a d y Ny Pre MCS 5000 MILLISECOND COUNTER k OUTPUT ADJ FREQUENCY FREQUENCY SETTING comse FINE OUTPUT POWER SWITCH ON ON So f N 5 6 50 O10 A A al NP J OFF OFF Tec DENSOKU TECHN FREQUENCY RELAY TEST SET RY 2005 PICKUP INPUT Connect to DC source FREQUENCY RELAY DENSOKU TECHNO DC SUPPLY gt ry2005 m doc 9 21 3 4 Threshold frequencies pickup and drop out Voltage output frequency must be set by using the FREQUENCY digital switch 10 and FREQUENCY SETTING push button 9 Puta frequency value on the FREQUENCY digital switch 10 Pressing the FREQUENCY SETTING push button 9 the new frequency data is stored on the memory and the output frequency is switched to new one The amplitude of test voltage is adjusted by the doubled adjuster knob of COARSE and FINE 8 and the voltage value is d
14. m 23kg ry2005 m doc 21 21 6 ACCESSORIES Mains supply cable Mains spare fuse Short jumper cable Shielded cables External reset cord TEL DENSOKU TECHNO 250Vac 13A terminated with 3 Pins plug socket 1 cable 5A 250V glass tube type 5 pcs terminated with banana plugs 100mm long 1 red and 1 black 2 cables terminated with banana plugs and clip plugs 5m long 2 cables for START and STOP signal cables terminated with a pin plug and a push button 2 m long 1 cable
15. n Description 1 AC INPUT Mains supply inlet 240VAC 16 GUARD Stop side post of MCS 5000 2 Mains fuse holder fuse 5A 250V 17 STOP Stop input binding post of MCS 3 Mains light 18 GUARD Start side post of MCS 5000 4 POWER SWITCH Mains supply switch 19 START Contact AC DC selector 5 OUTPUT Voltage output binding posts 20 MEAS Time Frequency selector 6 OVER LOAD Voltage output over load light 21 FUNCTION Interval one shot Train sel 7 OUTPUT ON OFF Output switch 22 STOP Contact AC DC selector 8 OUTPUT ADJ Output voltage adjuster 23 STANDBY Counting start standby light 9 FREQUENCY SETTING Push button 24 END Counting end light 10 FREQUENCY Hz Setting digital switch 25 RESET Millisecond counter reset switch 11 DVM for Generation voltage measurement 26 Numeral LED Millisecond or Frequency 12 No named Frequency switching signal out 27 OVER Over counting light 13 MCS 5000 Millisecond Frequency meter 28 s Unit second light 14 LINE ON OFF Line switch of MCS 5000 29 ms Unit millisecond light 15 START Start input binding post of MCS 30 Hz Unit Frequency light TEL DENSOKU TECHNO ry2005 m doc 7 21 3 OVER UNDER FREQUENCY RELAY TESTING 31 Introduction Frequency relay monitor the frequency of generator voltage outputs if the upper or lower frequency threshold is reached the relay picks up and issues a trip command for the
16. nly if the voltage did not change very much while the relay timing elapsed however reset timing is usually short so voltage does not change very much at release and the measurement is accurate If threshold measurement was not good because you were moving too fast do repeat the test 41 5 Delay times for pickup and drop out Voltage output frequency must be set by using the FREQUENCY digital switch 10 and FREQUENCY SETTING push button 9 Puta frequency value on the FREQUENCY digital switch 10 Pressing the FREQUENCY SETTING push button 9 the new frequency data is stored on the memory and the output frequency is switched to new one Set the output frequency the nominal value After this the nominal frequency have to be generated through all tests NOTE In the case of this test set either pre fault voltage or fault voltage must be zero Ifa pre fault has some voltage a fault is zero or in contrast with this The amplitude of test voltage have to be adjusted by the doubled adjuster knob of COARSE and FINE 8 and the voltage value is displayed on the DVM window 11 The standard value is computed from the nominal relay phase to phase voltage Vn Vs Vn 1 73 The standard values Vs are 57 8 V for Vn 100 V 63 5 V for Vn 110 V TEL DENSOKU TECHNO ry2005 m doc 18 21 The first session is measuring pickup timing for threshold lt V Under the OUTPUT switch is OFF adjust the amplitude of outpu
17. nominal above switch it to the fault frequency as follows Put a fault frequency value on the FREQUENCY digital switch 10 Reset the millisecond counter 13 by pressing the RESET button 25 Pressing the FREQUENCY SETTING push button 9 the fault frequency data is stored on the memory and the output frequency is switched to the fault one NOTE Before pressing the FREQUENCY SETTING push button 9 we have to be sure to press the RESET button 23 of MCS 5000 13 As the relay picks up the millisecond counter stops and the END light 24 turns on we will find pickup timing for threshold F lt on the millisecond counter Next we find drop off threshold for F lt From the last frequency above switch it to the nominal frequency as follows Put the nominal frequency value on the FREQUENCY digital switch 10 Reset the millisecond counter 13 by pressing the RESET button 25 Pressing the FREQUENCY SETTING push button 9 the nominal frequency data is stored on the memory and the output frequency is switched to the nominal one NOTE Before pressing the FREQUENCY SETTING push button 9 we have to be sure to press the RESET button 23 of MCS 5000 13 As the relay resets the millisecond counter stops and the END light 24 turns on we will find drop out timing for threshold F lt on the millisecond counter TEL DENSOKU TECHNO ry2005 m doc 13 21 4 OTHERS TESTING 41 Over and under vol
18. s the nominal frequency have to be generated through all tests The amplitude of test voltage have to be adjusted by the doubled adjuster knob of COARSE and FINE 8 and the voltage value is displayed on the DVM window 11 The standard value is computed from the nominal relay phase to phase voltage Vn Vs Vn 1 73 The standard values Vs are 57 8 V for Vn 100 V 63 5 V for Vn 110 V Set the output voltage the standard or nominal value according to the object relay Vn Nominal Voltage Vs Standard Voltage Vc Vn or Vs lt V v The first session is finding pickup threshold lt V Using the OUTPUT knobs slowly increase the Output voltage As the relay trips immediately stop to increase the voltage We will find pickup threshold lt V on the DVM display TEL DENSOKU TECHNO ry2005 m doc 16 21 NOTE read value is the voltage as relay trips This corresponds to the relay threshold only if the voltage did not change very much while the relay timing elapsed however trip timing is usually short so voltage does not change very much at release and the measurement is accurate If threshold measurement was not good because you were moving too fast do repeat the test Next we find drop off threshold for XV From the last voltage above very slowly decrease the voltage As the relay resets immediately stop to decrease the voltage We will find drop out threshold for lt V on the DVM display
19. t voltage to a fault test value by using the doubled adjuster knob 8 Reset the millisecond counter 13 by pressing the RESET button 25 the STANDBY light 23 turns on Turn the OUTPUT switch ON the fault voltage is supplied the relay under test and the START 15 of millisecond counter 13 and on the instant the counter starts NOTE Before turning the OUTPUT switch ON we have to be sure to press the RESET button of MCS 5000 As the relay picks up the millisecond counter stops and the END light 24 turns on we will find pickup timing for threshold XV on the millisecond counter Next we find drop off timing for threshold lt V In keeping the fault voltage above reset the millisecond counter 13 by pressing the RESET button 25 the STANDBY light 23 turns on And then turn the OUTPUT switch 7 OFF the fault voltage that was supplied to the relay under test and the START 15 of millisecond counter 13 is cut off and on the instant the counter starts NOTE Before turning the OUTPUT switch OFF we have to be sure to press the RESET button of MCS 5000 As the relay resets the millisecond counter stops and the END light 24 turns on we will find reset timing for threshold lt V on the millisecond counter TEL DENSOKU TECHNO ry2005 m doc 19 21 The second session is measuring pickup timing for threshold V lt From the last voltage that is the upper fault value
20. tage relay 411 Introduction There are three types of voltage relay that are an over voltage an under voltage and an over under voltage The range of voltage relay testing that we can do using this test set are restricted Threshold voltage tests so called pickup test and drop out test can be done easily and also delay time tests so called pickup timing test or drop out timing test are possible too 41 2 Preliminaries Refer to the front panel explanation on page 6 and the connection schematic on the next page Confirm that both the POWER switch 4 and the OUTPUT switch 7 are OFF Set the doubled knob OUTPUT ADJ COARSE and FINE 8 completely counter clockwise Confirm that the LINE switch 14 on MCS 5000 13 is ON Select the START mode 19 of MCS 5000 on AC VOLT as the output voltage of RY 2005 will be used for the start signal of millisecond counter Separate the START binding posts 15 on MCS 5000 13 from the binding posts 11 and connect to the voltage OUTPUT binding posts 5 Connect the mains supply cable to the AC INPUT inlet socket 1 and the other terminal plug to a power supply source outlet 240Vac Connect the relay to the OUTPUT binding posts 5 Connect the STOP binding posts 17 on MCS 5000 13 to the pickup of the relay Power on RY 2005 acting on switch 4 the power light 3 turns on and also the DVM 11 and millisecond counter MCS 5000 13 turn on S
21. will find drop out timing for threshold V lt on the millisecond counter TEL DENSOKU TECHNO ry2005 m doc 20 21 42 Frequency meter for external use MCS 5000 that is mounted on RY 2005 can be used as the Frequency meter for external use Please refer the appended manual MCS 5000 Instruction manual 7433 43 Millisecond counter for external use MCS 5000 that is mounted on RY 2005 can be used as the Millisecond counter for external use Please refer the appended manual MCS 5000 Instruction manual 7433 5 SPESIFICATIONS Power supply Power consumption Output voltage Output power Waveform distortion Digital voltmeter Digital time counter Output frequency Insulation resistance Dielectric strength Dimension and mass TEL DENSOKU TECHNO 240Vac 10 50 60Hz 1 phase LOOVA 0 300V 30VA continuous 2 and less at rated voltage with resistance load LED display 0 600 0V 0 1 of rdg 20digt mean detection and rms expression LED display 0 0ms 999 99s 0 01 of rdg Idigt At At on AC voltage 0 1 to 2 5ms Start stop contacts make break with auto selection Operating voltage AC DC 5 250V Frequency range 44 00 66 00Hz 0 1 of rdg Idigt 44 00 66 00Hz Accuracy 0 02Hz More than 100M Q at 500VDC at 23 C room temperature 60 relative humidity 1 5kVAC 1 minute 480 W X 240 H x 550 D m
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