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GMC-I Messtechnik GmbH

43

6.15.4 Alternating Current Measurement with Current Clamp Sen-

sor – AAC and Hz

Voltage/Current Transformer Output

When a current clamp sensor is connected to the multimeter
(V input), all current displays appear with the correct value in
accordance with the selected transformation ratio. The only pre-
requisite is that the current sensor is equipped with at least one of
the below listed transformation ratios, and that the ratio has been
previously selected in the following menu (

Clip



Off

).

➭

Set the rotary switch to V~ or Hz.

➭

Press the

MENU

key.

➭

Press the “Setup for currently selected measurement” softkey.

➭

Set the

Clip

parameter to the desired transformation ratio (the

same ratio as selected at the current clamp sensor) as de-
scribed below in the current clamp settings menu or select the
desired transformation ratio with the scroll keys

▲▼

.

➭

The display is returned to the measurement view by pressing
the

ESC

key three times.

➭

Repeatedly press the

Func

softkey until the desired measuring

function is displayed.

➭

Connect the current clamp sensor’s measurement cables as
shown.

➭

If necessary, conduct zero balancing by pressing the

Zero

key

(see description below).

Current Clamp Setup Menu

> Setup for currently selected measurement



Clip

Off / 1:1 / 1:10 / 1:100 / 1:1000



3 x > Measurement View

The maximum allowable operating voltage is equal to the nominal
voltage of the current transformer. When reading the measured
value, additional error resulting from the current clamp sensor must
also be taken into consideration

(default setting:

Clip

=

Off

= voltage display).

Improving Accuracy by means of Zero Balancing – Zero

The currently measured current value can be subtracted from
future measurements in all measuring ranges.

➭

Press the

Zero

softkey.

➭

The value ascertained for

Zero

is saved and appears above the

measurement display. Automatic compensation is imple-
mented for future measurements.

➭

The correction or offset value is deleted by pressing

Zero

, by

changing to another measuring function or by switching the in-
strument off. The value is cleared from the display.

Transforma-
tion Ratio

Measuring Ranges

Clamp Type

300 mV

3 V

30 V

1:1

1mV/1mA

300.0 mA

3.000 A

30.00 A

METRAFLEX 300M
WZ12C,
Z3512A

1:10 AM

1mV/10mA

3.000 A

30.00 A

300.0 A

CP30,
METRAFLEX
3000/300M
WZ11B, WZ12B,
Z3512A

1:100

1mV/100mA

30.00 A

300.0 A

3,000 kA

CP330/1100/1800
METRAFLEX
3000/300M,
WZ11B,
Z3512A

1:1000

1mV/1A

300.0 A

3,000 kA

30.00 kA

CP330/1100/1800
METRAFLEX 3000
WZ12C,
Z3512A

MENU

OK

OK

ESC

S–

A

V



Temp

m



/4

COIL

S+

Func

Func

AAC

Hz (A)

V~

Hz

~

R

x

Current

R

i

R

i

~ 9 M



mA/A:

See table

Measuring ranges:

Measuring ranges:
Hz:

300 Hz/3 kHz/

Hz:

30 kHz/300 kHz

Clip



Off

Zero

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Содержание METRAHIT IM E-DRIVE

Страница 1: ...Operating Instructions METRAHIT IM XTRA M273A D W METRAHIT IM E DRIVE M274A B Insulation Tester Milliohmmeter TRMS Multimeter Short Circuited Coil Tester 3 447 035 03 6 10 19 ...

Страница 2: ...he latest firmware update are available for download from our website at www gossenmetrawatt com Please register at myGMC in order to continuously receive the lat est information regarding current software and firmware as well as instrument updates and options Accessories Type Article No M273S M274S METRAHIT IM XTRA M273D X METRAHIT IM E DRIVE BT M274B X LiIon module USB charger Z270A X X Mains mo...

Страница 3: ...ent 20 6 2 2 Performing Insulation Measurement 21 6 2 3 Ending the Measurement and Discharging 21 6 3 Short Circuited Coil Measurement COIL Function 22 6 3 1 Preparing for Measurement 22 6 3 2 Conducting the Short Circuited Coil Measurement 23 6 3 3 Ending the Measurement and Discharging 24 6 4 Absorption Index Measurement DAR 25 6 5 Polarization Index Measurement PI 26 6 6 Voltage Measurement 27 ...

Страница 4: ...lease contact our respective representatives or subsidiaries for service in other countries DAkkS calibration laboratory for electrical quantities registration no D K 15080 01 01 accredited per DIN EN ISO IEC 17025 Accredited quantities direct voltage direct current value direct current resistance alternating voltage alternating current value AC active pow er AC apparent power DC power capacitance...

Страница 5: ...itions are not per mitted Be absolutely certain that the measuring ranges are not over loaded beyond their allowable capacities Limit values are included in chapter 8 Characteristic Values in the table enti tled Measuring Functions and Measuring Ranges in the Overload Capacity column The multimeter may only be operated with installed rechargeable batteries or mains module Dangerous currents and vo...

Страница 6: ...y to the battery pack Charging mode 10 45 C The battery may only be charged within this temperature range Measuring mode 10 50 C The battery may only be used within this temperature range Storage 20 50 C The maximum storage temperature is 50 C Excessive depletion The rechargeable battery s safety circuit consumes minimal amounts of current In order to prevent the battery from becoming fully deplet...

Страница 7: ...dual menu items Decrease values Operating mode menu Selection of individual menu items Increase measuring range or move decimal point to right Man function Decrease measuring range or move decimal point to left Man function 15 Brightness sensor 3 2 Symbols Used in the Digital Display 1 Momentary measuring function 2 Memory symbol 3 Important in this case Uext interference voltage or warning regard...

Страница 8: ... starting measurement Uset Selectable test voltage 50 100 250 500or 1000 V UISO Applied measured test voltage during measurement Coil 1 Coil L1 L2 L3 μs Short circuited coil test with optional COIL adapter Coil 2 DAR k s Dielectric absorption rate Coil 3 PI k s Polarization index V 0 5 VAC Alternating voltage AC TRMS full bandwidth AC clamp V Current clamp sensor Hz 1 Hz Voltage frequency full ban...

Страница 9: ... Language Press the MENU key Press the General Setup softkey Select the Language parameter with the help of the scroll keys Switch to the settings menu with the help of the scroll key Select the desired language with the scroll keys Acknowledge by pressing the OK key The input cursor jumps back to the parameters list Return to the main menu by pressing the ESC key or the MENU key The instrument is...

Страница 10: ...eld The last entered character or characters can be deleted with the help of the BackSp backspace key You can move the blinking cursor in the entry field to the desired position within the word using the or softkey in order to add characters or delete them with the help of the BackSp softkey The Shift softkey can be used to switch back and forth between upper and lower case letters as well as nume...

Страница 11: ...ary switch to the OFF position The display goes blank 4 5 1 System Auto OFF Automatic Shutdown The period of time after which the instrument is shut down auto matically regardless of whether a measuring or a menu view is open can be set to a value within a range of 10 to 59 minutes The instrument is switched off automatically if the measured value remains unchanged for a long period of time maximu...

Страница 12: ... to this end Then press the Help for currently selected measurement softkey Comments concerning the measurement are dis played By pressing the 1 3 softkey the measuring ranges and test voltages 2 3 are shown on the display The wiring diagram 3 3 is displayed by pressing the 2 3 soft key You can return to the help text 1 3 by pressing the 3 3 soft key Press the ESC key once to return to the menu Th...

Страница 13: ...measuring function as an offset from all future measurements and remains in memory until deleted or until the multimeter is switched off Zero balancing and reference value adjustment can be used with auto ranging as well as for manual measuring range selection Note Zero offset is available for the following measuring functions and switch positions RISO Coil DAR PI Hz Duty AC RPM AC Temp RTD the RL...

Страница 14: ...asured Value Polarity The analog display demonstrates the dynamic performance of a moving coil mechanism This display is especially advantageous for observing measured value fluctuation and for balancing pro cedures Display as a horizontal green bar which indicates the current measured value in real time The analog scale displays a small negative range for the measure ment of zero frequency quanti...

Страница 15: ...es from the first saved value by less than 100 digits the acoustic signal is generated twice If devi ation is greater than 100 digits only a brief acoustic signal is gen erated Note The Data function has no effect on the analog display at which the current measured value continues to appear However when the digital display is frozen the decimal point is fixed as well fixed measuring range Man appe...

Страница 16: ...ues Store at instrument by pressing the STORE key on the instru ment Store at instrument by pressing the STORE key on the probe Store at the PC by triggering the PUSH PRINT function in the report generating program IZYTRONIQ 5 6 1 Remote read out and storage via the Z270S probe The probe with integrated control unit permits remote triggering at difficult to access places and at locations which req...

Страница 17: ...ord type parameter with the scroll keys Acknowledge the selected parameter by pressing the OK key Change the respective value using the scroll keys Acknowledge the change with the OK key The entry cursor once again marks the entire parameter line General setup Memory Record type Periodic Data Value Setting the Sampling Rate This parameter cannot be set during memory mode operation Proceed as follo...

Страница 18: ... is started as soon as a measured value occurs which is within a specified band and is stopped as soon as this is no longer the case or after maximum Record ing Time has elapsed The band is specified with the help of the lower trigger limit Trigger Low Limit and the upper trigger limit Trigger High Limit The limits are entered in digits and are defined by the upper range limit In the case of DC fo...

Страница 19: ...ars in red to the left of the battery level display General Setup Memory Start Recording Stop The display is returned to the measuring function by pressing the ESC key three times Ending Recording Proceed as follows in order to stop recording Press the MENU key Press the General Setup softkey Select the Memory menu with the scroll keys Switch to the submenu with the help of the scroll key Select t...

Страница 20: ...t con nection can be avoided and broken measurement cables can be detected Note Insulation resistance may only be measured at voltage free devices The measurement cables may not come into contact with one another during high resistance insulation measure ments Set the rotary switch to RISO or COIL Connect the measurement cables to the accessible M and sockets using the included probe for connectio...

Страница 21: ... UINS e g Riq 100 k at 100 V see page 48 footnote 1 the instrument is switched auto matically to voltage measurement and the currently measured voltage value is displayed as Uext Note A dead zone results in erroneous measurements for automatic interference voltage detection during insulation measurement The dead zone lies within a range of 80 to 120 of the selected test voltage in the case of an i...

Страница 22: ...w 1 Ph Motor AC motor L1 3 Ph Motor 3 phase motor L1 L2 L3 Coil Motor with up to 15 coils L1 L15 Select polarity unipolar or bipolar see below Polarity Selection Momentary Measurement Setup Parameter Polarity Bipolar Unipolar 3 x Measurement View Test voltage Uset 1000 V Test voltage for the short circuited coil measurement is perma nently set to 1000 V and cannot be changed Connection and Contact...

Страница 23: ...tacting method instead for example with the help of alligator clips Poor contact may result in sparking and if the contacting element slips off of the device under test the inspector is exposed to life threatening danger Activating the Short Circuited Coil Measurement Activate the measurement by pressing the Start softkey The high voltage symbol next to the battery level display blinks during meas...

Страница 24: ...nce The instrument s internal 1 M resis tor causes rapid discharging Contact to the motor coils must be retained to this end Do not disconnect the object until voltage has fallen below 25 V i e message Discharge disappears Note Voltage measurement in the RISO or COIL switch position is used primarily for interference voltage detection before the respective measurement Use the V V or V switch posit...

Страница 25: ...ing the Stop softkey The measurement is recorded and you can observe its progress which is displayed as a curve over the time axis The result for R30 is displayed after reaching the 30 s mark Mea surement is stopped automatically and results for R60 and DAR are displayed after reaching the 60 s mark The following measured values are displayed digitally next to the graphic representation DAR Absorp...

Страница 26: ...edly press the Func softkey until the measurement view for PI appears at the display Contact the device under test with alligator clips which have been plugged onto the test probes Interference voltage measurement V AC DC TRMS is con ducted in this switch position Measurement may only be started when the device under test is voltage free Uext 0000 V Activate the measurement by pressing the Start s...

Страница 27: ...the occurrence of unexpected voltages at devices under test e g defective devices For example capacitors may be dangerously charged No measurements may be made with this instrument in elec trical circuits with corona discharge high voltage Special care is required when measurements are made in HF electrical circuits Dangerous pulsating voltages may be pres ent Be aware of the fact that dangerous v...

Страница 28: ...witched to frequency measure ment the previously selected voltage measuring range remains active Repeatedly press the Func softkey until the unit of measure Hz appears at the display Lowest measurable frequencies and maximum allowable voltages are listed in chapter 8 Charac teristic Values VAC Fil Voltage Measurement with Low Pass Filter Attention Be aware of the fact that dangerous voltage spikes...

Страница 29: ...the measurement cables as you would for a voltage measurement In the case of internal combustion engines ig nition pulses can be acquired alternatively with a current sen sor see wiring diagram The measured value then appears in RPM for example 244 3 r Measured RPM value revolutions per minute RPM parameter pulses per revolution Pulses per Revolution Settings Menu 2 S RPM measurement at 2 stroke e...

Страница 30: ...is type of measurement see also Voltage Comparator We recommend measuring voltage without the low pass filter first in order to be able to detect any dangerous voltages A 1 kHz 3dB low pass filter can be activated if required in order to filter out capacitively induced high frequency pulses of greater than 1 kHz for example when performing measurements at cables i e undesired voltages of greater t...

Страница 31: ...nated in all measuring ranges by means of zero balancing Short circuit the measurement cables to this end Press the Zero softkey Insofar as the value for Zero is less than a permissible threshold of 0 to 50 of the measuring range the Zero softkey is no lon ger grayed out in the display and the Zero function can be acti vated by pressing the Zero key The value ascertained for Zero is saved and appe...

Страница 32: ...s the Zero softkey Insofar as the value for Zero is less than a permissible threshold of 0 to 50 of the measuring range the Zero softkey is no lon ger grayed out in the display and the Zero function can be acti vated by pressing the Zero key The value ascertained for Zero is saved and appears above the measurement display Automatic compensation of cable ca pacitance is activated for all subsequent...

Страница 33: ...ensor PT100 PT1000 Selecting the Unit of Measure for Temperature Setup for currently selected measurement Temp RTD Setup Temperature U M C F C default setting Entering R Leads Offset Resistance Setup for currently selected measurement Temp RTD Setup R Leads 00 xx Enter the known resistance of the connector cables with the scroll keys Select the digit to be changed with the keys and change the resp...

Страница 34: ...s the measured temperature using the selected unit of measure Querying the Measured Reference Temperature General Setup Info Temperature xx x C Note The internal reference temperature temperature of the internal reference junction is measured by a temperature sensor inside the instrument This may be somewhat higher or lower than room temperature as a result of inter nal heat up or moving from warm...

Страница 35: ...ect supply power from the electrical circuit of the de vice to be measured and discharge all high voltage capaci tors Make sure that the device under test is voltage free Interfer ence voltages distort measurement results Refer to Chapter 6 6 4 regarding testing for the absence of voltage with the help of the direct voltage measurement Set the rotary switch to Press the Func key The diode symbol a...

Страница 36: ...it the measurement cables to this end Activate the measurement by pressing the Start softkey Insofar as the value for Zero is less than a permissible threshold of 0 to 50 of the measuring range the Zero softkey is no lon ger grayed out in the display and the Zero function can be acti vated by pressing the Zero key The value ascertained for Zero is saved and appears above the measurement display Au...

Страница 37: ...nd voltage measurement This type of 4 pole connection is known as connection according to Kelvin KC4 Kelvin clips and KC27 Kelvin probes available as accesso ries allow for simple correct connection Measurement with the KC27 Kelvin Probe 6 14 2 Thermovoltage Compensation Thermovoltages which occur as a result of material and tempera ture differences may distort measurement results For this reason ...

Страница 38: ...tive Changes in current at inductive devices includ ing those caused by switching the milliohmmeter on and off or changing the measuring range result in a corresponding voltage change These changes may be of significant magnitude and may result in arcing under unfavorable conditions The milliohm meter is protected against arcing by means of suitable voltage arrestors 6 14 4 Milliohm Measurement wi...

Страница 39: ...ent measuring range is equipped with a fuse link Maximum permissible voltage for the measuring cir cuit rated voltage of the fuse is 1000 V AC DC Use specified fuses only The fuse must have a breaking capac ity of at least 30 kA If the fuse for the active measuring range has blown the blown fuse symbol appears at the digital display If a fuse should blow eliminate the cause of overload before plac...

Страница 40: ...or the power consumer 1 once again and discharge any capaci tors Remove the test probes from the measuring point and return the measuring circuit to its normal condition Improving Accuracy by means of Zero Balancing Zero The currently measured current value can be subtracted from future measurements in all measuring ranges Press the Zero softkey The value ascertained for Zero is saved and appears ...

Страница 41: ...t or the power consumer 1 once again and discharge any capaci tors Remove the test probes from the measuring point and return the measuring circuit to its normal condition Improving Accuracy by means of Zero Balancing Zero The currently measured current value can be subtracted from future measurements in all measuring ranges Press the Zero softkey The value ascertained for Zero is saved and appear...

Страница 42: ...the Zero key see description below Current Clamp Setup Menu Setup for currently selected measurement Clip Off 1 1 1 10 1 100 1 1000 3 x Measurement View The maximum allowable operating voltage is equal to the nominal voltage of the current transformer When reading the measured value additional error resulting from the current clamp sensor must also be taken into consideration default setting Clip ...

Страница 43: ...tly selected measurement Clip Off 1 1 1 10 1 100 1 1000 3 x Measurement View The maximum allowable operating voltage is equal to the nominal voltage of the current transformer When reading the measured value additional error resulting from the current clamp sensor must also be taken into consideration default setting Clip Off voltage display Improving Accuracy by means of Zero Balancing Zero The c...

Страница 44: ...he display as described on page 10 Acknowledge your entry by pressing the Enter softkey The sequence s steps are displayed once again You can insert a measuring step with any desired measuring function after pressing the Ins Function softkey Press the Ins Function key select the desired function with the rotary switch and acknowledge your selection by pressing the STORE key The Information Sequenc...

Страница 45: ...uently the Stop softkey Press the STORE key in order to save the measured value Press the OK key in order to start the next measuring step If the last measuring step of the measuring sequence is ended by pressing the OK softkey the first four measuring steps or measuring functions are displayed and stored with value date and time Press the scroll key in order to display further measuring steps The...

Страница 46: ...perating system and a Bluetooth interface our METRALOG app provides the following functions in combination with the METRAHIT IM XTRA BT METRAHIT IM E DRIVE BT TRMS digital multimeter Display of received multimeter measured values as Digital or analog values measured value curve Y t measured value logger Recording of measuring operations Transmission of logs via wireless services and network ser vi...

Страница 47: ...11 A 300 A 10 nA 70 mV 0 25 10 1 30 10 1 0 30 d 0 3 A Cont 3 mA 100 nA 165 mV 0 15 10 0 5 30 10 30 mA 1 A 190 mV 300 mA 10 A 450 mV 1 A 100 A 1 2 V 1 A 5 min Factor 1 1 10 100 1000 Measuring input Input impedance 1 11 1 11 A VAC VDC 0 3 3 30 300 A 300 mV Voltage measurement input approx 9 M V socket 0 15 10 10 0 5 30 d 1 0 30 d Measurement input 6 3 30 300 3 k A 3 V Plus current transformer clamp ...

Страница 48: ...x UINS 1 0 mA 1 4 mA U 1000 V 1000 V 10 s 250 500 V 1000 V 1 12x UINS Measuring Range Resolution Nominal Voltage UISO Intrinsic Uncer tainty at Reference Conditions rdg d 0 3 V 1000 V 1 Ri 1M 3 30 100 digits 10 0 30 9 μs 0 1 μs 1000 V 10 5 digits 31 250 μs 1 μs Influencing Quantity Sphere of Influence Measured Qty Measuring Range 1 Influence Error rdg d 10 K Temperature 0 C 21 C and 25 C 40 C V 0 ...

Страница 49: ... 1 A ranges 2L m measuring ranges F2 FF 0 315 A 1000 V 6 3 x 32 mm Fuse with breaking capacity of 30 kA at 1000 V AC DC Power Supply Battery pack 3 7 V 4000 mAh LiPo approx 25 self discharging per year Service life Approx 20 hours without M INS mea surement RLo R 4 wire Battery indicator Battery capacity display via battery sym bol querying of momentary charge level via menu function Power OFF fun...

Страница 50: ...ng Significance of IP Codes Applicable Regulations and Standards IP XY 1st digit X Protection Against Foreign Object Ingress IP XY 2nd digit Y Protection Against Water Ingress 0 Not protected 0 Not protected 1 50 0 mm 1 Vertically falling droplets 2 12 5 mm 2 Dripping 15 angle 3 2 5 mm 3 Spraying water 4 1 0 mm 4 Splashing water 5 Dust protected 5 Jet water IEC 61010 1 DIN EN 61010 1 VDE 0411 1 Sa...

Страница 51: ...ttery parameter indicates the battery pack s charge level as a percentage Attention Disconnect the instrument from the measuring circuit be fore removing the battery pack for charging If the symbol appears at the display the battery pack should be replaced as soon as possible You can continue work ing with the instrument but reduced measuring accuracy may result Removing the Battery Pack Note Reco...

Страница 52: ...n the instrument must be switched off briefly and then switched back on again or briefly switched to a non cur rent measuring range and then back to the A measuring range If contact is poor or the fuse is blown the FUSE symbol appears at the display 9 4 Housing Maintenance No special maintenance is required for the housing Keep outside surfaces clean Use a slightly dampened cloth for cleaning In p...

Страница 53: ...on instruments are guaranteed for a period of 3 years after date of shipment The manufacturer s guarantee covers materials and workmanship Damages resulting from use for any other than the intended pur pose or operating errors as well as any and all consequential damages are excluded The calibration certificate confirms that the product s specified technical data were complied with at the point in...

Страница 54: ...learing Memory 19 Creating Groups 19 Ending Recording 19 Querying Occupancy 19 Setting Hysteresis 18 Setting the Recording Type 17 Setting the Sampling Rate 17 Start Recording 19 Trigger Mode Operation 18 MemoryAdjusting the Trigger Threshold 18 Milliohm Measurement 2 Wire Measurement 36 4 Wire Measurement 37 O Overview Keys and Connections 7 P Parameter Adjusting Recording Time 17 Auto OFF 11 Bri...

Страница 55: ...stechnik GmbH 55 T Temperature Measurement With Thermocouples 34 Test Sequences 44 U Use for Intended Purpose 5 Use of KS17 2 and Z270S 53 V Voltage Comparator 28 29 30 Voltage Measurement Notes 27 W WEEE Mark 8 ...

Страница 56: ...ct to change without notice PDF version available on the Internet GMC I Messtechnik GmbH Südwestpark 15 90449 Nürnberg Germany Phone 49 911 8602 111 Fax 49 911 8602 777 E mail info gossenmetrawatt com www gossenmetrawatt com ...

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