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Page 86

Measured value displays, overview

Measured values

L1 Apparent power
L2 Apparent power

L3 apparent power

Mean values

L1 Apparent power
L2 Apparent power

L3 apparent power

Measured value

Sum

Real power

Mean value

Sum

Real power

Measured value

Sum

Apparent power

Mean value

Sum

Apparent power

Max. value

Sum

Real power, mean

Max. value

Sum

Real power

Max. values

L1 Apparent power
L2 Apparent power

L3 apparent power

Max. value

Sum

Apparent power

Max. values

L1-N Voltage
L2-N Voltage
L3-N Voltage

Min. values

L1-N Voltage
L2-N Voltage
L3-N Voltage

Max. values

L1-L2 Voltage
L2-L3 Voltage
L3-L1 Voltage

Min. values

L1-L2 Voltage
L2-L3 Voltage
L3-L1 Voltage

Measured values

L1-L2 Voltage
L2-L3 Voltage
L3-L1 Voltage

Mean values

L1 Current
L2 Current
L3 Current

Max. values

L1 Current
L2 Current
L3 Current

Max. values

L1 Current
L2 Current
L3 Current

Measured values

L1-N Voltage
L2-N Voltage
L3-N Voltage

Measured values

L1 Current
L2 Current
L3 Current

Measured value

Sum

Current in N

Measured values

L1 Real power
L2 Real power
L3 Real power

Mean values

L1 Real power
L2 Real power
L3 Real power

Max. values

L1 Real power
L2 Real power
L3 Real power

Mean value

Sum

Current in N

Max. value

Sum meas. vaues

Current in N

Max. values

Sum mean values

Current in N

Mean values

L1 Reactive power
L2 Reactive power
L3 Reactive power

Measured values

L1 Reactive power
L2 Reactive power
L3 Reactive power

Max. values (ind.)

L1 Reactive power
L2 Reactive power
L3 Reactive power

A01

C01

D01

A02

C02

D02

A03

B03

C03

D03

A04

B04

C04

D04

A05

B05

C05

A06

B06

C06

D06

A07

B07

C07

A08

B08

C08

A09

B09

C09

Mean values

L1-L2 Voltage
L2-L3 Voltage
L3-L1 Voltage

Mean values
L1-N Voltage
L2-N Voltage
L3-N Voltage

A02

B02

Содержание UMG 96S

Страница 1: ...rent transformer Output 1 Output 2 Key 1 Key 2 Mean value Supply Peak value high rate Consumption Universal Measuring Device UMG 96S Operating instructions Brief instructions see last page Dok Nr 1 02...

Страница 2: ...ions 31 Parameters and meas values 32 Parameter indication at UMG96S 32 Measured value indication at UMG96S 32 Program parameters 33 Mean values 34 Averaging time current Adr 057 34 Averaging time pow...

Страница 3: ...ed No part of this manual may be reproduced or duplicated without the written permission of the author Any contraventions are punishable and will be prosecuted with all legal means No liability can be...

Страница 4: ...age This device may be put into service and used by qualified personnel according to the safety regulations and instructions only Please mind the additional legal and safety regulations for the respec...

Страница 5: ...G96S 1 33 03 046 Manual English 1 52 07 103 2 Fixing brackets 1 51 00 104 CD containing Programming software GridVis Assisting descriptions Part No Description 29 01 907 Seal 96x96 08 01 501 PC cable...

Страница 6: ...re peated There is no guarantee for devices which are opened out of the manufacturing works Repairing and calibration Maintenance and calibration can only be carried out at manufacturer s end Face pla...

Страница 7: ...against ground and 240VAC phase to phase can be connected di rectly The measurement and operational voltage must be connected to the UMG96S via a separation circuit breaker or power switch and a fuse...

Страница 8: ...ly recognized For each sample 6 periods are scanned From these values the inserted microprocessor calculates the electrical quanti ties The measured values can be indicated in the measured value displ...

Страница 9: ...for devices with additional PCB 1 analogue output are Measuring range L N 50 300V AC Measuring range L L 87 520V AC Operating voltage range L N 85 300V AC The measurement and operating voltage range...

Страница 10: ...utput 2 UMG96S 12 13 11 14 15 TXD RXD Input Output 2 003 Pulse output Wq 003 0 Digital output 003 1 Analog output 003 2 Digital input 003 3 5 Profibus Remote 003 4 Input Output 1 002 Pulse output Wp 0...

Страница 11: ...put Wq 003 0 Digital output 003 1 Analog output 003 2 Digital input 003 3 5 Profibus Remote 003 4 Input Output 1 002 Pulse output Wp 002 0 Digital output 002 1 Analog output 002 2 Digital input 002 3...

Страница 12: ...gital output 003 1 Analog output 003 2 Digital input 003 3 5 Profibus Remote 003 4 Input Output 1 002 Pulse output Wp 002 0 Digital output 002 1 Analog output 002 2 Digital input 002 3 5 Profibus Remo...

Страница 13: ...l output 003 1 Analog output 003 2 Digital input 003 3 5 Profibus Remote 003 4 Input Output 1 002 Pulse output Wp 002 0 Digital output 002 1 Analog output 002 2 Digital input 002 3 5 Profibus Remote 0...

Страница 14: ...nalog output 003 2 Digital input 003 3 5 Profibus Remote 003 4 Input Output 1 002 Pulse output Wp 002 0 Digital output 002 1 Analog output 002 2 Digital input 002 3 5 Profibus Remote 002 4 Analog outp...

Страница 15: ...t 1 TXD GND RXD TXD RXD Input Output 2 003 Pulse output Wq 003 0 Digital output 003 1 Analog output 003 2 Digital input 003 3 5 Profibus Remote 003 4 Input Output 1 002 Pulse output Wp 002 0 Digital o...

Страница 16: ...9 Profibus DP Option A B TXD GND RXD TXD RXD 8 3 5 6 Input Output 2 003 Pulse output Wq 003 0 Digital output 003 1 Analog output 003 2 Digital input 003 3 5 Profibus Remote 003 4 Input Output 1 002 P...

Страница 17: ...Page 17...

Страница 18: ...1 analogue output are L N 85 300V L L 148 520V The measurement and operating voltage range for devices with additional PCB 2 Profibus are L N 140 300V L L 242 520V 150V special version At least 2 pha...

Страница 19: ...Supply 1 UMG96S L l K k L l K k AK AL K l k l BK Bl Current measurement The current measurement is carried out via cur rent transformers of either 5A or 1A If the current must be measured by an Amper...

Страница 20: ...n have the function digital input Please note that both circuits have a common supply 24VDC termi nal 11 Only one function can be assigned to each ter minal 12 and 13 12 13 11 Input Output 2 Pulse out...

Страница 21: ...0V AC 24V DC 11 5k 230V AC 24V DC 12 Digital output 1 1 5k External auxiliary voltage S1 0V 12 UMG96S Digital input 1 13 230V AC 24V DC 11 Digital input 2 S2 5k 5k Diagr Connection example for digital...

Страница 22: ...A L1 L2 L3 N Verbraucher Consumer k l k l k l 5 1 A 5 1 A 5 1 A L1 L2 L3 PEN 1k 1l 2k 2l 3k 3l 1 2 3 4 5 6 7 8 9 10 UMG96S Voltage measure ment see type plate Current measurement 0 005 5A L1 L2 L3 N V...

Страница 23: ...6S Voltage measure ment see type plate Current measurement 0 005 5A L1 L2 L3 N Verbraucher Consumer k l 5 1 A L1 L2 L3 PEN 1k 1l 2k 2l 3k 3l 1 2 3 4 5 6 7 8 9 10 Verbraucher Consumer k l k l k l 5 1 A...

Страница 24: ...age is indicated on the type plate Measurement and operating voltage which do not correspond to the numbers on type plate can lead to malfunctions or damage of the instrument The wires for the measuri...

Страница 25: ...nly alternating currents can be measured no direct currents Current transformer terminals must be earthed on the secondary Current transformers which do not carry load on the secondary can lead live v...

Страница 26: ...ed Measurement in wrong phase Voltage transformer wrongly programmed Outer conductors exchanged Wrong connection Remedy Renew fuse Send device to the manufacturer for re pair The desired display must...

Страница 27: ...rammed Current path assigned to wrong voltage path At least one CT connection exchanged Current path assigned to the wrong voltage path Output badly programmed Output badly connected See error message...

Страница 28: ...r is assembled by the heavy error 910 and the internal reason of error 0x01 In this example an error occured while reading the calibration data from EEPROM The device must be sent to the manufacturer...

Страница 29: ...range in phase L1 L2 L3 A Current path V Voltage path Warnings Warnings are not heavy errors and can be con firmed by the keys 1 or 2 The retrieving and indication of measured values continues This e...

Страница 30: ...display selected measured value indications one after the other with a selectable changing time Programming mode In programming mode the neccessary settings of the UMG96S can be indicated and changed...

Страница 31: ...ues Measured val ues Measured values Program ming Menue 2 1 Confirm selection Short number 1 Long number 1 Program ming Menue 2 short value 10 move decimal point to the right long value 10 move decima...

Страница 32: ...s well as date and time can be read and changed via the interfaces RS232 or RS485 only Current and voltage transformer The primary and secondary values for current and voltage cannot be entered in the...

Страница 33: ...key 2 move to programming menue for voltage transformer and parameter list The parameters for current and voltage trans former can only be read at UMG96S PRG k A L1 L2 L3 CT PRG V L1 L2 L3 VT L L Cha...

Страница 34: ...ed values the minimum and maximum values are determined The minimum value is the lowest value which was measured since the last deletion The maxi mum value is the highest measured value which was meas...

Страница 35: ...ency must be se lected as a fix frequency at UMG96S The determination of the net frequency can be carried out automatically or programmed fixely The following settings for the destination of the net f...

Страница 36: ...easurement is carried out by a sum cur rent transformer 5 5 5A The UMG96S must be programmed as follows Primary 1000A 1000A 2000A Secondary 5A CT primary 600 Programming In programming mode please scr...

Страница 37: ...In programming mode the VT ratio is indicated by the symbol VT Secondary in Volt PRG kV L1 L2 L3 VT L L Primary voltage in kV Programming In programming mode please scroll to the set ting of the volt...

Страница 38: ...Current har monic Phase L3 Measured value Total harmonic distortion factor THD Addr 269 The total harmonic distortion factor which is calculated by UMG96S for current and voltage represents the ratio...

Страница 39: ...ted cyclically one after the other Changing time Addr 059 Setting range 0 60 seconds If 0 seconds are set no changing of the indica tions is effected The changing time is valid for all measured value...

Страница 40: ...x x x 26 x x x x x x x x x 27 x x x x x x x x x 28 x x x x x x x x x 29 x x x x x x x x x 30 x x x x x x x x x 31 x x x x x x x x x 32 x x x x x x x x x Rotation profile No 2 See page 86 to 89 A B C...

Страница 41: ...ble Bit8 8 measured value table Byte 32 row 32 Bit1 1 measured value table Bit2 2 measured value table Bit8 8 measured value table Roration profile No 3 Specifically can only be programmed by PC A B C...

Страница 42: ...x x x 03 x x x x 04 x x x x 05 x x x 06 x x x x 07 x x x 08 x x x 09 x x x 10 x x x 11 x x x 12 x x x 13 x x x 14 x x x 15 x 16 x x 17 x 18 x x x x 19 x x x 20 x x x x x x x x 21 x x x x x x x x x 22...

Страница 43: ...alue table Bit8 8 measured value table Byte 32 row 32 Bit1 1 measured value table Bit2 2 measured value table Bit8 8 measured value table Indication profile No 2 See page 86 to 89 A B C D E F G H 01 x...

Страница 44: ...ord was programmed the pass word menue appears indicating 000 The first number of the password is flashing and can be changed using key 2 Pressing key 1 the next number is selected and flashes If the...

Страница 45: ...Addr 277 The field rotation and the frequency in phase L1 are indicated in one display The field rotation gives an information about the phase sequence within three phase mains A clockwise rotation is...

Страница 46: ...l run time Comparator 2A Addr 402 5 Total run time Comparator 1A Addr 404 6 Total run time Comparator 2A Addr 406 In the indication up to 99999 9 h 11 4 years can be indicated Operating hours counter...

Страница 47: ...is indicated in decimal form by the UMG96S Example 1 The UMG96S indicates the decimal value 96 under address 914 Option Hex Binary Description 0x01 0000 0001 Memory EEPROM 0x02 0000 0010 Clock 0x04 0...

Страница 48: ...interface the UMG96S can be connected to an analogue modem To enable the UMG96S to transmit data via an analogue modem address 070 must be overwritten with the value 1 Address 070 0 Modem operation No...

Страница 49: ...Error Check The Response of the UMG96S might look as follows Description Hex Comment Device address 01 UMG96S Address 1 Function 03 Byte counter 06 Data 00 00hex 00dez Data E6 E6hex 230dez Error Check...

Страница 50: ...500pF With the PC cable for the RS232 interface 2m optionally available the maximum baud rate is 38 4kBit s UMG96S 12 13 11 RJ11 Sleeve 14 15 TXD GND RXD A B Input Output 2 003 Pulse output Wq 003 0 D...

Страница 51: ...cable 2m Part no 08 01 503 GridVis UMG96S Modem RxD TxD Modem RxD TxD RS232 RJ11 Diagr Connect the UMG96S to PC via modem Diagr PC cable part no 08 01 501 2m PC cable Pin 9 Pin 3 Pin 2 Pin 5 Pin 7 Pi...

Страница 52: ...up 2 Basic PCB RS485 MODBUS RTU Interface RS232 MODBUS RTU Interface Serial interface Fieldbus RS485 Termination resistors All units shall be connected in a single line bus structure Up to 32 units ca...

Страница 53: ...890 1234567890 1234567890 UMG96S 14 B 15 A Shielding Use shielded twisted pair cable for the RS485 bus To ensure sufficient shielding the cable shield connection must be short and plane style Do not u...

Страница 54: ...485 interface and the Profibus interface are not separated gal vanically from each other m Comparator group 1 Comparator group 2 Digital input 2 UMG96S 12 Additional PCB 2 13 11 RJ11 Sleeve 14 15 Digi...

Страница 55: ...ided by all leading cable manufacturers m Attention If the feeding voltage for the resistors is taken from the UMG96S the Profibus can be short circuited in case the UMG96S does not get a sufficient o...

Страница 56: ...two outputs of the UMG96S can be activated The relation is Output 1 Input Output 1 Terminal 12 Output 2 Input Output 2 Terminal 13 Profile formats The measured values can be retrieved in 14 profiles...

Страница 57: ...r_6 4 Sum 38Bytes Profibus profile No 7 Values Bytes Real ener Adr 422 4 Real ener Adr 424 4 React enrg Adr 418 4 eeprom_timer 4 Real enr 2 Adr 416 4 Scheinarbeit1 4 Sum 24Bytes Lists Profibus profile...

Страница 58: ...3 2 dft_u_11_L1 2 dft_u_11_L2 2 dft_u_11_L3 2 dft_u_13_L1 2 dft_u_13_L2 2 dft_u_13_L3 2 dft_u_15_L1 2 dft_u_15_L2 2 dft_u_15_L3 2 Sum 54Bytes Profibus profile 10 Values Bytes tdh_i_L1 2 thd_i_L2 2 thd...

Страница 59: ...dft_u_13_L3_max 2 dft_u_15_L1_max 2 dft_u_15_L2_max 2 dft_u_15_L3_max 2 Sum 54Bytes Profibus profile 12 Values Bytes P_sum_max 2 P_sum_max_mean 2 I_sum_max 2 I_sum_max_mean 2 phi_sum_max 2 S_sum_max...

Страница 60: ...ing voltage Input Output 2 003 Pulse output Wp 003 0 Digital output 003 1 Analog output 003 2 Digital input 003 3 5 Profibus Remote 003 4 Input Output 1 002 Pulse output Wp 002 0 Digital output 002 1...

Страница 61: ...ing outputs and in puts is displayed on UMG96S by cycle symbols Condition digital inputs Condition of digital outputs A current smaller than 1mA can flow A current of up to 5mA can flow L1 L2 L3 K1 K2...

Страница 62: ...output 003 1 Analog output 003 2 Digital input 003 3 5 Profibus Remote 003 4 Input Output 1 002 Pulse output Wp 002 0 Digital output 002 1 Analog output 002 2 Digital input 002 3 5 Profibus Remote 00...

Страница 63: ...on The pulse pause is not proportional to power m m Diagr Maximum pulse frequency at minimum pulse duration of 50ms Impuls 50ms Pulse pause 50ms 100ms 10Hz Minimum pulse duration Pulse pause Minimum p...

Страница 64: ...de vice can retrieve pulse frequencies up to 50Hz At UMG96S the pulse output the minimum pulse duration and the pulse valence must be programmed Input Output 2 003 Pulse output Wp 003 0 Digital outpu...

Страница 65: ...le But UMG96S can provide up to 10 pulses per second 10Hz and the data collecting device can detect 50 pulses per second 50Hz A pos sible solution is to programm the UMG96S to send a frequency of 10Hz...

Страница 66: ...88 392 will be given out by the corresponding digital output UMG96S 12 13 11 RJ11 Sleeve 14 15 TXD GND RXD A B Input Output 2 003 Pulse output Wp 003 0 Digital output 003 1 Analog output 003 2 Digital...

Страница 67: ...is set to Addr 013 100 100A For the minimum time of 2 minutes the digital output 1 must be switched on while exceeding the limit Addr 016 120 seconds For a run up time of 60 seconds the limit must be...

Страница 68: ...time Addr 066 Operator Addr 027 Comparator C Measured value Addr 020 Limit Addr 018 Minimum time Addr 021 Run up time Addr 065 Operator Addr 022 Comparator B Comparator group 1 Combine results of the...

Страница 69: ...imit violation Minimum time t Limit Measured value Exceeding t Comparator result t 2 seconds t run up time t 2 Seconds Operator Addr 017 There are two operators available for the comparsion of measure...

Страница 70: ...mA should flow Scale end value Addr 048 053 The scale end value corresponds to the meas ured value for which the maximum current of 20 mA should flow UMG96S 12 13 11 RJ11 Sleeve 14 15 TXD GND RXD A B...

Страница 71: ...of the analog outputs to a PLC 4 20mA 4 20mA Analog out put 1 Analog out put 2 UMG96S Analog outputs External Power Supply 12 13 24V 11 230V AC 24V DC L M SPS Analog inputs M M M M Diagr Connection o...

Страница 72: ...B TXD GND RXD A B 8 3 5 6 Input Output 2 003 Pulse output Wp 003 0 Digital output 003 1 Analog output 003 2 Digital input 003 3 5 Profibus Remote 003 4 Input Output 1 002 Pulse output Wp 002 0 Digita...

Страница 73: ...energy counter high tariff active Adr 072 0 reactive energy counter high tariff active Adr 072 1 reactive energy counter high tariff active Adr 002 5 Digital input 1 is used for high low tariff change...

Страница 74: ...me stamp In the time stamp the number of seconds since 1 1 1970 up to the time of storage are counted Data string In the data string the data of one of the 4 possi ble profiles are deposited A data st...

Страница 75: ...sults are combined Comparator 1 Bit 1 Comparator 2 Bit 2 Comparator 3 Bit 3 Comparator 4 Bit 4 Comparator 5 Bit 5 Comparator 6 Bit 6 Each changing of the 6 comparator outputs will be stored in the cor...

Страница 76: ...w 1 Bit1 1 meas value table Bit2 2 meas value table Byte 2 row 2 Bit1 1 meas value table Bit2 2 meas value table STRING2 6 Byte Hour minute second day month year FDATA 2 Byte Data set number 4 Byte Ti...

Страница 77: ...999 999999999 LONG 025 Comparator 1C measured value 0 999 INT 6 026 Comparator 1C min on time 1 899 INT Sec 1 027 Comparator 1C Operator 0 1 CHAR 4 0 028 Comparator 2A limit 999999999 999999999 LONG 0...

Страница 78: ...0 6 CHAR3 6 058 Averaging time for P 0 6 CHAR3 6 059 Rotation time 0 60 CHAR Sec 0 060 Indication profile 0 3 CHAR 0 0 2 Fix indication profiles 3 Free selectable indication profile 061 Indication ro...

Страница 79: ...nly CHAR 800 Write in EEPROM 0 4 CHAR 0 Bit 1 1 Write calibration data Bit 2 1 Write programming data Bit 4 1 Write counter Bit 8 1 Write min max values 911 Serial number read only LONG 913 Software R...

Страница 80: ...0 1 222 3 Harmonic U L1 N INT V 0 1 223 5 Harmonic U L1 N INT V 0 1 224 7 Harmonic U L1 N INT V 0 1 225 9 Harmonic U L1 N INT V 0 1 226 11 Harmonic U L1 N INT V 0 1 227 13 Harmonic U L1 N INT V 0 1 2...

Страница 81: ...271 THD U L3 INT 0 1 272 THD I L1 INT 0 1 273 THD I L2 INT 0 1 274 THD I L3 INT 0 1 275 Frequency L1 INT Hz 0 01 276 CosinusPhi Sum INT 0 01 277 Field rotation INT1 278 Current in N INT mA 1 279 Real...

Страница 82: ...320 Max value I L1 Mean value INT mA 1 321 Max value I L2 Mean value INT mA 1 322 Max value I L3 Mean value INT mA 1 323 Max value P L1 INT W 0 1 324 Max value P L2 INT W 0 1 325 Max value P L3 INT W...

Страница 83: ...mA 1 361 Max value 11 Harmonic I L1 INT mA 1 362 Max value 13 Harmonic I L1 INT mA 1 363 Max value 15 Harmonic I L1 INT mA 1 364 Max value 1 Harmonic I L2 INT mA 1 365 Max value 3 Harmonic I L2 INT mA...

Страница 84: ...ff in phase L1 Bit 2 Exceeding of 6 5Aeff in phase L2 Bit 3 Exceeding of 6 5Aeff in phase L3 Bit 4 Free Bit 5 Exceeding of 300Veff in phase L1 Bit 6 Exceeding of 300Veff in phase L2 Bit 7 Exceeding of...

Страница 85: ...a memory data set FDATA 502 Data memory data set FDATA 503 Data memory data set FDATA 504 Data memory data set FDATA 505 Data memory data set FDATA 500 505 decr data memory pointer 702 while reading 5...

Страница 86: ...urrent Max values L1 Current L2 Current L3 Current Max values L1 Current L2 Current L3 Current Measured values L1 N Voltage L2 N Voltage L3 N Voltage Measured values L1 Current L2 Current L3 Current M...

Страница 87: ...e Frequency L1 Field rotation Measured value Adr 416 Sum Real energy without rev running stop Mean value Sum cos phi Max value THD U L1 Max value THD U L2 Max value THD U L3 Max value THD I L1 Max val...

Страница 88: ...d value 15 Harmonic U L3 Measured value 1 Harmonic I L1 Measured value 3 Harmonic I L1 Measured value 15 Harmonic I L1 Measured value 1 Harmonic I L2 Measured value 3 Harmonic I L2 Measured value 15 H...

Страница 89: ...onic U L3 Max value 15 Harmonic U L3 Max value 1 Harmonic I L1 Max value 3 Harmonic I L1 Max value 15 Harmonic I L1 Max value 1 Harmonic I L2 Max value 3 Harmonic I L2 Max value 15 Harmonic I L2 Max v...

Страница 90: ...0V Standard version 0 34kV 50 300V 0 5 rng 150V Special version 0 17kV 25 150V 0 5 rng Voltage L L 300V Standard version 0 60kV 87 520V 1 0 rng 150V Special version 0 30kV 40 260V 1 0 rng Current 0 01...

Страница 91: ...areas Basic unit with option 1 DIN EN61326 2002 03 table 4 class B residential areas Basic unit with option 2 DIN EN61326 2002 03 table 4 class A industrial areas Noise immunity industrial areas Casin...

Страница 92: ...consumption max 5mA Input signal attached 20V DC max 27V DC Input signal not attached 2V DC Analog outputs Option 4 20mA Solution 8Bit Accuracy 1 5 vMb Load max 300 Ohm Reaction time 1 5 seconds Oper...

Страница 93: ...peration voltage L N 85 140 300V AC 150V Special version max 150V AC against ground Measuring range L N 25 150V AC Measuring range L L 40 260V AC Operation voltage L L 85 260V AC Current measurement 1...

Страница 94: ...iew All dimensions in mm Dimension sketch Cut out 92 0 8 x 92 0 8 mm Back side Panel max 6 90 96 49 DSUB 9 1234 1234 1234 1234 1234 1234 1234 1234 1234 1234 1234 1234 1234 42 6 2 5 RJ11 Fixing angles...

Страница 95: ...gr UMG96S with RS232 and digital outputs Digital outputs RS485 Bus cable B A Option S1 S2 UMG96S Measurement and operation voltage see type plate Current measurement 0 01 5A L1 L2 L3 N Verbraucher Con...

Страница 96: ...ymbol PRG is not on display and the first measured value display for voltage appears Key 2 With key 2 please scroll between the various measured value indications for current voltage power etc Key 1 K...

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