Portable Standard Meter (PSM
Contents
1. shifts to screen which set up pulse output for measuring the accuracy of PSM 3000A itself x But the accuracy of PSM 3000A itself can not be measured on site and it is required mode for correction of PSM 3000A PSM 3000A User s Manual S www amstech co kr KEPID gt AMSTECH 2 KEPID AMSTech Co Ltd 4 8 Pulse sensor 4 8 1 Function and Name Sensor 4 Caution d hood 1 Support bar M s L 2 Spring stand Support Bar Role of supporting sensor head Spring stand Role of fixing sensor After pressing the spring stand with hand stretch left and right as many length as needed fitting the size of kWh Meter and attach on meter Sensor hood In case of detecting pulse it is role of blocking direct ray of the sun Use it attaching on sensor head if necessary Caution Make sure the direction of spring stand Bending parts of spring stand must be placed toward inside Otherwise close adhesion to the kWh meter is difficult when attaching sensor Please note PSM 3000A User s Manual tC www amstech co kr KEPID Af ES AMSTECH KEPID AMSTech Co Ltd D Volume for 2 Select switch for sensitive control digital mechanical meter Volume for sensitive control Control of sensitivity for LED pulse of digital kWh meter or black dot of rotor of mechanical kWh meter Left handed screw Reduce the sensitivity Right handed screw Raise the sensitivity Sele2. shifts to harmonics screen Just as above figure shows whole harmonic content percentage of current upon each phase If pressing 1 key returns to load status view and if pressing cancel key shifts to initial screen of 1phase 2wire 3phase 3wire and 3phase 4wire PSM 3000A User s Manual 29 www amstech co kr KEPID Af ES AMSTECH Z KEPID AMSTech Co Ltd 4 13 Accuracy test If selecting meter type to measure in main menu following screen appears Below is screen when selecting 3phase 4wire meter If pressing 2 key user himself shifts to accuracy testscreen and has to enter or select item of setting value about measurement method PSM 3000A User s Manual BU www amstech co kr KEPID E gt AMSTECH KEPID AMSTech Co Ltd Focus meter constant input meter constant pulse kWh rev kWh of meter to measure Press enter key after inputting meter constant 7 measuring method Select single mode or serial mode with 1 key and 2 key and press enter key single mode means to finish after making an error test one time only and series mode means to make an error test serially until user stops active or reactive Select active or reactive with 1 key and 2 key and press enter key Z measuring pulse number Input pulse number to measure an error Here you had better input enough measuring pulse number for an precise error measurement If the change of error i
3. of body and each plug white point and it can connect PSM 3000A User s Manual di o m www amstech co kr KEPID A gt AMSTECH KEPID AMSTech Co Ltd 4 Operation Directions 4 1 Keypad button Front of body PSM 3000A Back Space Pulse Input PULSE a INPUT a al n Lag Cancel aleet Wa L Restart D o Enter KEPID 4 AMSTECH Number Select number in LCD menu and Press it on keypad Back Space Use in case of delete or amend wrong input number when entering number Cancel Use when return to previous menu or escape from present menu Restart Use when re input or re measurement Enter Use when entering data ends or transfer to other menu Pulse input Use in the substitution of manual pulse switch Make sure to use after detaching sensor connector yellow on top side of body PSM 3000A User s Manual ncm www amstech co kr KEPID 49 AMSTECH Z KEPID AMSTech Co Ltd 4 2 Meter connection port Top side of meter voltage port 2 Clamp port 3 sensor port 4 printer port 5 current port direct connection Voltage port Connection of PT cable Clamp port Connection of Clamp CT cable Sensor port Connection of pulse sensor pulse scanning head or manual pulse switch Printer port Connection of printer cable Current port Connection of current cable when measuring by direct connection Red Input Source Black Outpu
4. 2008 3p4w load status manufacturer AMSTech Meter S N 0000000001 Voltage phase A 110 0V Voltage Line to Line A B 190 4V Voltage phase B 109 8V Voltage Line to Line B C 190 2V Voltage phase C 109 8V Voltage Line to Line C A 190 4V Current A 4 9A Current B 5 0A Current C 5 0A PF A 0 9996 PF B 0 9996 PF C 0 99 Active power A 546 6 Watt Active power B 548 1 Watt Active power C 548 9 Watt Reactive power A 2 2 Var Reactive power B 0 7 Var Reactive power C 4 4 Var Apparent power A 550 3 Va Apparent power B 550 3 Va Apparent power C 552 5 Va Total active power 1643 7 watt Total reactive power 7 3 Var Total power factor 0 99 PSM 3000A User s Manual www amstech co kr KEPID DA AMSTECH Z KEPID AMSTech Co Ltd 4 11 Vector diagram view 3phase 4wire 3P4W vector diagram 3phase 3wire 3P3W vector diagram If pressing 1 key inload status view you can check vector diagram Vector diagram shows voltage current phase and the status of current based on voltage And in case voltage is in reverse sequence of phase shows vector of changed phase B phase or C phase based on A phase If press 1 key returns to load status view and if press cancel key shifts to initial screen of 1phase 2wire 3phase 3wire and 3phase 4wire PSM 3000A User s Manual 28 www amstech co kr KEPID DA AMSTECH Z KEPID AMSTech Co Ltd 4 12 Harmonic view If pressing 2 key in data view screen
5. Portable Standard Meter PSM 3000A Users Manual KEPID D AMSTECHS KEPID AMSTech Co Ltd Contents MEG SEENEN 2 Key PariS cc Se dee CG EE 4 Operation Directions 41 Keypad BURON ia 4 2 Meter Connection POM gege eas dl eve oa reen e T e BEE 4 4 Basic lee EC BEE Bin EE NEE AO Maly n Een WEE 4 7 Screen Or Selllhi eer EE EE 48 Pu lse Sensor apran eaS E aE HSR E aaa Tia eya 4 9 Manual Pulse Te 1 4 10 Dala View A c 4 11 Vector Diagram RTE 4 12 Harmonics VIEW EE ANS meer etc c O O P P DO 4 14 Save of Measuring Result ENEE 4 15 Management of Measuring Result eee eee een nn 416 Connection WII PG udev and ieu es Dues ai Eater ety ed v vu re vida 4 17 Demand Measurement sese eee 000000000 nennen nnn nnn nnn nnns 4 18 Accumulative kWh Measurement ern Imm nemen nennen 5 Wiring Diagram Schematic 5 1 Clamp Gr Wiring Diagrami uec eebe 5 2 Direct Connection Wiring Diagram EE KEPID DA AMSTECH 2 KEPID AMSTech Co Ltd 1 Overview This Potable Standard Meter PSM 3000A is designed device to examine easily the accuracy and function of single phase and three phase kWh meter on site PSM 3000A is ultra high accuracy meter tester with accuracy 0 1 in case of direct connection with kWh Meter and with 0 296 in case of connection with Clamp CT PSM 3000A is portable device compared with foreign goods and provides a diverse of information so that can analyze and examine the power qual
6. Wh measurement If selecting meter type to measure in main menu following screen appears Below is screen in selecting of 3phase 4wire type meter If pressing 3 key shifts to demand measurement screen PSM 3000A User s Manual 39 www amstech co kr KEPID A gt AMSTECH Z KEPID AMSTech Co Ltd If pressing 4 key shifts to accumulative kWh measuring screen Select active or reactive with 1 key and 2 key If pressing enter key after selecting and press 1 key starts measuring If pressing restart key returns to beginning input screen If pressing 4 key shifts again to demand measurement screen If pressing cancel key shifts to main screen of 1phase 2wire 3phase 3wire and Sphase 4wire PSM 3000A User s Manual A0 www amstech co kr KEPID A gt AMSTECH 2 KEPID AMSTech Co Ltd o Wiring Diagram Schematic 5 1 Clamp CT Wiring Diagram R Phase JI les a Neutral METER i R 1P2W Wiring Diagram PSM 3000A User s Manual A www amstech co kr KEPID gt AMSTECH 2 KEPID AMSTech Co Ltd R PHASE L be SPHASE il T PHARE a a NEUTRAL 4 LOAD LAS sll Le Gs Ce JC JC unnpa Kos 3P3W Wiring Diagram PSM 3000A User s Manual xp www amstech co kr KEPID gt AMSTECH 2 KEPID AMSTech Co Ltd RPHASE 5 PHASE T PHASE NEUTRAL LOAD 3P4W Wiring Diagram PSM 3000A User s Manual Sc
7. check C phase clamp check PSM 3000A User s Manual C www amstech co kr KEPID gt i CH AMSTE KEPID AMSTech Co Ltd 4 7 Screen of setting Following is about setting of PSM 3000A 1 If press 1 automatically turns to main screen after transferring from current setting measurement type Clamp CT measurement or Direct connection measurement to other measurement type That is to say if Clamp CT measurement to Direct measurement type and if Direct measurement type to Clamp CT measurement type Clamp CT measurement is a system which gets the accuracy of kWh meter and measuring value with Clamp CT after connecting clamp CT into the port on the top side of PSM 3000A and Direct connection measurement is a system which gets the accuracy of kWh meter and measuring value by connecting current cable into the current port on the top side of PSM 3000A PSM 3000A User s Manual e www amstech co kr KEPID 49 AMSTECH 2 KEPID AMSTech Co Ltd 2 If pressing 2 LCD screen which can check or set the current date and time changes If pressing 1 you can change the current date and time and when cursor shifts in the sequence of year month date hour minute second you can set time inputting the number with keypad directly 3 If pressing 3 shifts to screen which can check ID of PSM 3000A PSM 3000A User s Manual E www amstech co kr KEPID DA AMSTECH 2 KEPID AMSTech Co Ltd 4 If pressing 4
8. ct switch for digital mechanical meter Select LED pulse of digital kWh meter or black dot of rotor of mechanical kWh meter ON mechanical meter OFF Digital meter PSM 3000A User s Manual 17 www amstech co kr KEPID Af ES AMSTECH 2 KEPID AMSTech Co Ltd 2 ight receiving device CD light emitting device Light emitting device both ends Element which gives off light to read rotor black dot of mechanical meter Q Light receiving device middle Element which reads LED pulse or rotor black dot PSM 3000A User s Manual p www amstech co kr KEPID 4 AMSTECH 2 KEPID AMSTech Co Ltd Sincision ine Red LED D Green LED Green LED Flickering when reading LED pulse or detecting black dot Red LED Display preparation status to detect pulse When lighting reading pulse is ready Incision line Base line horizontal with mechanical meter s rotor and digital meter s LED PSM 3000A User s Manual 19 www amstech co kr KEPID AMSTech Co Ltd KEPID Af ES AMSTECH 2 4 8 2 Directions Mechanical meter Changeover switch ON Mechanical meter measuring mode 2 green LEDs of sensor head is on Control the space of spring stand fitting kWh meter to measure and adjust the location of sensor head make 2 green LED on kWh meter fit on black dot of rotor H IS a Sensor Position Adjust the position of sensor head for arrow mark ft indicating sensor
9. e www amstech co kr KEPID gt AmS 2 KEPID AMSTech Co Ltd 5 2 Direct connection Wiring Diagram PSM 3000A User s Manual c wp e www amstech co kr KEPID af Ee AMSTECH KEPID AMSTech Co Ltd KEPID AMSTech Co Ltd gt Homepage www amstech co kr gt Address 604 103 Building SK ventium Dangjung Dong Kunpo Si Kyeonggido gt Tel 82 31 466 0386 0588 Fax 82 31 466 0385 gt Business Area e Automatic Meter Reading System Digital kWh Meter Home Network Solution e Control amp Measurement System PSM 3000A User s Manual o www amstech co kr
10. easuring error of meter shifts to save screen Select manufacturer s meter to measure Press number key equal to manufacturer If inputting serial number of measuring meter available 10 digit maximum and pressing enter key the result of measuring saves on internal memory of PSM 3000A PSM 3000A User s Manual we o ia www amstech co kr KEPID 4 VV AMSTECH 2 KEPID AMSTech Co Ltd 4 15 Management of measuring result oaved data can be seen if selecting 5 saved data view in main manu screen oaved data includes date time manufacturer of meter meter serial number and error It is possible to save four hundred of data maximum and to view four hundred of data in case connection with PC program Data Viewer and ten data in body of PSM 3000A Ten saved data to be seen in body of PSM 3000A is saved automatically renewal from O if the data is over 10 If there is no data in saved address indicates Saved data can be searched with 7 key and enter key For printing press 1 key in the wanting address after connecting printer into body of PSM 3000A PSM 3000A User s Manual B www amstech co kr KEPID gt AMS KEPID AMSTech Co Ltd v x Measured error is available for printing after save printing description is as follow 10 10 September 4 2008 3phase 4wire accuracy test Meter Manufacturer KEPID AMSTech Serial number 0000000001 Error 0 02 PSM 3000A User s Manual cg e www amst
11. ech co kr KEPID 49V AMSTECH Z KEPID AMSTech Co Ltd 4 16 Connection with PC If pressing 2 key in 5 saved data view of main menu you can see the screen as follow In above screen you can see data in software for PC Data Viewer after connection cable provided with PSM 3000A PSM 3000A User s Manual 36 www amstech co kr KEPID CH AMSTE KEPID AMSTech Co Ltd 4 17 Demand measurement If selecting meter type to measure in main menu following screen appears Below is screen in selecting of 3phase 4wire type meter If pressing 3 key shifts to demand measurement screen Select active or reactive with 1 key and 2 key If pressing enter key after selecting cursor shifts to the place inputting time Input time to measure and press enter key time is available inputting 1 30min and if inputting time exceeding 30min input time under 30minutes message shows If pressing 1 key after inputting measuring time active demand measuring is started If pressing 4 key shifts to accumulative kWh measuring screen specify in detail on 4 18 PSM 3000A User s Manual of E www amstech co kr KEPID gt AMS 2 KEPID AMSTech Co Ltd If pressing restart key shifts to beginning input screen If pressing cancel key shifts to main screen of 1phase 2wire 3phase 3wire and 3phase 4wire PSM 3000A User s Manual co www amstech co kr KEPID 4 AMSTECH 2 KEPID AMSTech Co Ltd 4 18 Accumulative k
12. gulated direction in case of connection Voltage PT connecter Red Current Clamp CT connector Green Sensor connector Yellow 3 1 3 Connect crocodile clip for measuring voltage and Clamp for measuring current with R S T phase in accordance with the color R Red BL Yel low d T Blue m i N Black Fuse Fuse is inserted for change of crocodile clip and protection of user and product in the middle of voltage cable Refer that if you push a connection place of fuse box slightly and turn it takes off easily in case change to fuse or small crocodile clip extra provided 3 1 4 Clamp CT is not detached with Cable On clamp CT phase mark indicating by color and text R S T and current direction arrow mark is displayed PSM 3000A User s Manual euge www amstech co kr KEPID gt AMSTECH 2 KEPID AMSTech Co Ltd R Red S Yel low T Blue 3 1 5 Make sure to power down the portable printer after use it 3 1 6 In case foreign substances is stained on contact of clamp CT accuracy may be bad In such a case remove foreign substances on contact of clamp CT with an alcohol etc 3 2 General 3 2 1 Be careful of heavy impact on body or not to drop while in using or transportation 3 2 2 Avoid contacting water fire and toxic fluid 3 2 3 Don t drop a heavy or sharp object on the body 3 2 4 When connecting clamp CT and voltage cable with the body push inside slightly fitting the socket
13. ight specifies the version of S W applied to PSM 3000A Select type of meter for measuring accuracy or reading load status In other words n case 1phase 2wire 1P2W press number 1 key In case 3phase 3wire 3P3W press number 2 key In case 3phase 4wire 3P4W press number 3 key In order to change setting value of PSM 3000A press number 4 key And press number 5 key in order to read the saved data PSM 3000A User s Manual gt l www amstech co kr KEPID DA AMSTECH 2 KEPID AMSTech Co Ltd x Example 3phase 3wire type 3P3W 3phase 3wire system makes first warning message owing to different with 1 phase 2 wire system and 3 phase 4 wire system Double check if voltage cable well connected after reading warning message and if press Enter key screen shifts to main screen to measure 3P3W M Dont forget to see the connection of voltage cable If Clamp connected in the opposite of current direction error message displays as following figure In case A phase Clamp is connected oppositely A phase clamp check In case B phase Clamp is connected oppositely B phase Clamp check In case C phase Clamp is connected oppositely C phase Clamp check message displays If connecting in forward direction again after checking the relevant clamp connection the message disappears and turns to next screen There is arrow mark showing current direction in each clamp and refer to it A phase clamp check B phase clamp
14. ity and wiring conditions of kWh meter and equipped with printing function of saved data analyzed on site or printing connected with PC Measuring voltage range amp 60V 480V lt 0 1 accuracy Direct Connect o0mA 6A lt 0 1 Current range Clamp CT 500mA 100A lt 0 2 Measuring frequency range 50 60Hz 50mA 6A Active Reactive Apparent lt 0 1 Accuracy Clamp CT 500mA 100A Active Reactive Apparent lt 0 2 Support Digital Meter Mechanical meter both Basic available for Voltage Current Power Active Reactive Apparent measuring measurement Phase Angle Power Factor Frequency Demand Vector Diagram Support Vector Diagram 8 check mis wiring Extra l kWh Measuring Active Reactive Apparent Function S W for PC Available for printing report PSM 3000A User s Manual gt E www amstech co kr KEPID Af ES CH 2 AMSTE KEPID AMSTech Co Ltd 2 Key Parts PSM 3000A Body Pulse sensor inc Sensor bar Manual Pulse switch Voltage cable Current Cable with Clamp CT Portable Printer option PSM 3000A User s Manual gt www amstech co kr KEPID de AMSTE H KEPID AMSTech Co Ltd 3 Caution 3 1 While using 3 1 1 Connect with meter after you assemble all parts with PSM 3000A body 3 1 2 Terminals of Voltage PT Current Clamp and Sensor of meter body are made by different color Make sure to check if the color matches before connection and they are connected at the re
15. position on top of sensor to place in the center of meter PSM 3000A User s Manual 20 www amstech co kr AMSTECH KEPID gt KEPID AMSTech Co Ltd And adjust the position of sensor for sensor head incision line to be horizontal horizontal with disk of meter exactly amp Turn volume of sensitive control clockwise for Green LED light on After seeing Green LED light on turn volume of sensitive control left handed screw for Green LED to light off and Red LED only to be on x Make sure to turn volume of sensitive control and make Green LED light off off after Green LED is on Just in such a case reading black dot of rotor is ready PSM 3000A User s Manual e www amstech co kr KEPID a gt AMSTECH KEPID AMSTech Co Ltd When black dot of rotor passes by sensor see if Green LED flickers or not x See if Green LED flickers one time when rotor spins round one time If Green LED flickers two times or more reduce sensitivity by turning volume of sensitivity control left handed screw lt Caution gt 1 Due to the property of pulse sensor pulse sensor sometimes can not read where is direct light from the sun or bright Block the sunlight with the provided sensor hood 2 In case it is difficult to set up pulse sensor widthwise you may set up it lengthwise PSM 3000A User s Manual 22 www amstech co kr KEPID 4 gt AMSTECH 2 KEPID AMSTech Co Ltd Digital Mete
16. r Changeover switch OFF digital meter measuring mode 2 green LED of sensor head is off Adjust space of spring stand fitting kWh Meter to measure and adjust the position of sensor for LED of meter and light receiving element of sensor head to be align Sensor position PSM 3000A User s Manual 20 gt www amstech co kr KEPID a h AMSTECH 2 KEPID AMSTech Co Ltd If sensor read pulse output from kWh Meter Green LED flickers Also LED flickers indicating as pulse in front of PSM 3000A body simultaneously lt Caution gt 1 If not reading of pulse increase sensitivity by turning volume of sensitive control clockwise 2 Due to the property of pulse sensor pulse sensor can not sometimes read where is direct light from the sun or bright Block the sunlight with the provided sensor hood 3 In case it is difficult to set up pulse sensor widthwise you may set up it lengthwise PSM 3000A User s Manual 24 www amstech co kr KEPID 49 AmS 2 KEPID AMSTech Co Ltd 4 9 Manual pulse switch Manual pulse switch is used for pressing switch manually while user directly check about black dot of mechanical Meter in case the reading of black dot is difficult in measurement of mechanical Meter When using manual pulse switch detach pulse sensor connected into sensor portj yellow port and attach to use Press correctly at the time that black dot of rotor passes Please attend the mea
17. s ID of PSM 3000A body and clamp CT When in using make sure to see that number displaying in ID window matches ID number of Clamp Their own ID number in front of Clamp is given in every Clamp The message If ID of clamp doesn t match the accuracy of PSM 3000A cannot be guaranteed means accuracy rate comes out inaccurately in case ID of PSM 3000A body is different from ID of clamp For instance in case using clamp in the other PSM 3000A the result of accuracy is measured inaccurately Accordingly make sure to double check if ID of body and clamp is correspondent before using After checking ID you can control brightness of LCD screen in Brightness Menu In case screen is not seen caused by surroundings after power on it is the function to control brightness To make screen dark press number 7 and to make bright press number 9 If shifting to next screen press enter key x Value of Controlled brightness is not saved Therefore if the PSM 3000A restart after power off brightness returns to the default PSM 3000A User s Manual m www amstech co kr KEPID Af EA CH4 AMSTE KEPID AMSTech Co Ltd 4 6 Main menu screen This is the first screen for use of PSM 3000A Clamp on Top left means currently Clamp CT measurement type and if Direct indicates that means currently Direct connection measurement type Choice of Clamp CT and Direct connection is up to users and that describes in 4 7 setting screen Ver on top r
18. s big while measuring error increase pulse number For your reference measuring pulse is designed to inputting over2 at least and to input number again from the beginning after an error message if inputting 1 If inputting measuring pulse number and pressing enter key shifts to error test screen PSM 3000A User s Manual SL www amstech co kr KEPID a gt AMSTECH 2 KEPID AMSTech Co Ltd In error measuring screen if pressing 1 key error measurement starts with a sign es Please attend that error measurement doesn t start otherwise pressing 1 key When first receiving pulse message shows And then reads the pulse from pulse reception sensor as many number as input automatically calculates error and prints Input pulse number can be seen through Bar which error arises In the right under of bar input pulse number shows and gauge of bar rises whenever input pulse one by one In case selecting serial mode measure an error serially and in case selecting single mode measure an error one time only and stops If pressing 2 key shifts to save screen If pressing restart key measures an error from the first If pressing cancel key shifts to initial screen of 1phase 2wire 3phase 3wire and Sphase 4wire PSM 3000A User s Manual nd www amstech co kr KEPID 49 AMSTECH 2 KEPID AMSTech Co Ltd 4 14 Save of measurement result If pressing 2 key in the stage the result indicates after m
19. surement value is out of range if press wrong even one time PSM 3000A has built in pulse switch besides existing manual pulse switch That is pulse input key in front of PSM 3000A When using pulse input key make sure to detach pulse sensor manual pulse switch connected into sensor port yellow jack and attach to use Otherwise pulse input key does not working properly For reference using pulse sensor is correct direction and use in just inevitable case such as limited space or when difficulty to detect black dot in mechanical meter PSM 3000A User s Manual D e www amstech co kr AMSTE KEPID gt CH 2 KEPID AMSTech Co Ltd 4 10 Data view If selecting type of meter to measure in main menu following screen shows up Below is screen when selecting 3phase 4wire type meter If press 1 shift to screen of load status view In screen ofload status view voltage current active reactive apparent Power Factor displays at real time Each value can be seen turning over sequently That is to say load status view screen can be scrolled with 7 key and Enter key PSM 3000A User s Manual 26 www amstech co kr KEPID 4 Ams 2 KEPID AMSTech Co Ltd If pressing 1 key you can see vector diagram After connection of portable printer and press 3 key you can print the data value displaying on load status view screen Below is printing of load status data with the portable printer 09 30 July 10
20. t Load PSM 3000A User s Manual d www amstech co kr KEPID PD AMSTECH 2 KEPID AMSTech Co Ltd 4 3 Power switch Bottom of meter CD Power switch Power switch If switch on power is supplied for meter 1 ON 0 OFF PSM 3000A User s Manual 1G www amstech co kr KEPID M WA KEPID AMSTech Co Ltd 4 4 Basic operation step 6 First step Connect Clamp CT cable into the clamp port of PSM 3000A Green Connect pulse sensor or manual pulse switch cable into the sensor port of PSM 3000A Yellow Connect voltage cable into the voltage port of PSM 3000A Red In case of Single phase 1P2W use R phase Red and N phase Black of voltage cable and R phase Red of Clamp CT In case of 3phase 3wire 3P3W use R phase Red S phase Red and T phase Blue for voltage cable and R phase Red and T phase Blue for Clamp CT When finishing connection Switch on main power on the bottom of PSM 3000A for operation After using it switch off power and stop the power and then take off voltage current and sensor cable PSM 3000A User s Manual e www amstech co kr KEPID A Po AMSTECH 2 KEPID AMSTech Co Ltd 4 5 Initial screen If switch on after connecting power 110V or 220V into PSM 3000A LCD screen appears as below figure RARA OUTI S SUN HARI dd Lal al al E In this LCD screen you can check Clamp ID and control brightness First number displayed in current ID i
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