Operating Instructions METRISO INTRO, BASE, TECH Insulation, Low Resistance and Voltage Measurement Instrument 3-349-812-03 2/5.
Features Overview of Both Instrument Variants METRISO Article number Measurements U = 1000 V RINS INTRO M550N TECH M550P ✓ ✓ ✓ — ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ RINS RLO RINS RLO ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ — Measuring category CAT III 600 V / CAT IV 300 V ✓ ✓ 10 MΩ test resistor — DAkkS calibration certificate — ✓ ✓ ✓ ✓ RINS RINS R U = 250, 500 V U = 50, 100 V 10 Ω ... 10 kΩ RLO 0.17 Ω ... 10 Ω U 0 ... 1000 V U 0 ...
Inserting the Battery Holder (side view) Connections (housing top) Battery Compartment Lid 10 MΩ* + GUARD* COM + Battery Holder Battery Holder Contacts Test Resistor* G500/G1000) Contact Spring User Interface GMC-I Messtechnik GmbH COM Measuring Connections Connector with Shielded Cable, Option KS-C (Z541F) Battery Compartment SHIELD Shielded Cable Test Resistor* (G500/G100 Test Probe with Control Keys 1 * not METRISO INTRO 1 Z550A accessory as option: Test probe with a key for triggering
User Interface (Example METRISO TECH) Red LED: limit value exceeded Green LED: limit value adhered to Exit menu Activate instrument from standby state Scroll up: – SETUP: parameter selection – V: voltage type selection – Rlo: polarity reversal LCD panel Red LED: – External voltage with device switched off * – Test/Measuring voltage with device switched on – Discharge voltage for Riso/Rins * not METRISO INTRO 10 k Start measurement Parameters transfer 100 k 1M MAN 0 10 M 100 M Rlo>10% 1G 10 G
Digital Display Symbols 1 14 10 k 2 On 100 k 3 1M MAN 0 4 10 M 5 100 M 1G 10 G Rlo>10% 1200 G 1000 V 6 13 DC 12 11 AC 7 TRMS DATA ZERO k 10 M G T kV 9 Battery level indicator Battery full Battery OK Battery weak Battery (almost) dead, U < 8.
Contents Page Contents Page Insulation Measuring Instrument ............................................ 23 1 Applications ...............................................................................7 2 Safety Features and Precautions ..............................................8 10 Characteristic Values .............................................................. 24 3 Initial Start-Up ...........................................................................
1 Applications These instruments fulfills all requirements of applicable European and national EC directives. We confirm this with the CE mark. The relevant declaration of conformity can be obtained from GMC-I Messtechnik GmbH. METRISO INTRO/BASE/TECH insulation and resistance measuring instruments allow for quick and efficient testing of protective measures in accordance with DIN VDE 0100, ÖVE-EN 1 (Austria), NIV/NIN SEV 1000 (Switzerland), and regulations specific to additional countries.
2 Safety Features and Precautions The electronic measuring and test instrument is manufactured and tested in accordance with safety regulations IEC/EN 61010-1 / VDE 0411-1 and EN 61557. When used for its intended purpose, safety of the operator, as well as that of the instrument, is assured. Read the operating instructions thoroughly and carefully before using your instrument. Follow all instructions contained therein.
3 Initial Start-Up 3.1 Battery test Four different battery symbols, ranging from fully depleted to fully charged, continuously indicate the momentary charge level in the upper left-hand corner of the display If battery voltage has fallen below the allowable lower limit, the pictograph shown at the right appears. The instrument does not function if the batteries have been depleted excessively, and no display appears. 3.
3.3 Query and Set Device Parameters – SETUP Function info SETUP Ð Turn the rotary switch to the SETUP position. info appears at the display. Ð Press ENTER to query battery voltage or firmware version. Ð Then select the desired operating parameters with the scroll keys and acknowledge by pressing the ENTER key. The desired information is displayed in the scroll mode (moving letters). 10 3.3.
List of all parameters (alphabetical order) Parame- Page: Header ter 0.d iSP A.d iSP APoFF bAtt bEEP blight Com 1nfo liled SET uErS ion rlead 13: 0.diSP – Show/Hide Leading Zeros 12: A.
APoFF – Specified Time for Automatic Shutdown and Continuous ON Shutdown time APoFF can be specified with this parameter. The instrument is switched off automatically if the measured value remains unchanged for a long period of time and if none of the keys or the rotary switch have been activated before specified APoFF time (entered in minutes) has elapsed. The selected on-time has as substantial influence on battery service life.
0.diSP – Show/Hide Leading Zeros This parameter determines whether or not leading zeros will appear in the measured value display. 1nFo SET START ENTER rlead ... 0.diSP START ENTER 0000.0: with leading zeros (default value) 0.0 : leading zeros suppressed START ENTER 3.3.4 Default Settings Previously entered changes can be undone, and default settings can be restored.
4 General Operation The test leads are connected to the “+” and “COM” jacks. The instrument can be switched off manually by turning the rotary switch to the OFF position.
Testing the LED which Indicates the Detection of External Voltage when Switched Off – OFF Switch Position Ð Apply a voltage of greater than 50 V (+ and COM jacks). Ð Turn the rotary switch to the V position. Ð Read the voltage value at the LCD. Ð Turn the rotary switch to the OFF position. Test results: If applied voltage is unchanged and the LED which indicates the detection of external voltage lights up red, the LED is OK.
5 Measuring Insulation Resistance – Riso/Rins Function 5.1 Connection RISO Note Checking the Measurement Cables Before performing insulation measurement, the test probes on the measurement cables should be short-circuited in order to assure that the instrument displays a value very close to 0 Ω (see section 8). This makes it possible to detect interrupted measurement cables, which simulate high insulation resistance.
5.3 10 k 1M 100 k 10 M 100 M 1G 10 G 1 00 MAN DATA G UISO/INS 3.25 M ISO 500 V DATA blinks at the display until the measured value has settled in. ! Attention! Do not touch the instrument’s terminal contacts during insulation resistance measurements! If nothing has been connected to the terminal contacts, or if a resistive load component has been connected for measurement, your body would be exposed to a current of approximately 1 mA at a voltage of 1000 V.
6 Measuring Direct, Alternating and Pulsating Voltage – V Function You can measure direct voltage, as well as sinusoidal alternating voltage with frequencies ranging from 45 to 65 Hz with this test instrument. Ð Select the V measuring function with the rotary switch. Ð Select the desired voltage type with the scroll keys: direct voltage (DC), alternating voltage (AC TRMS) or pulsating voltage (DC + AC TRMS) Ð Connect the measurement cables to the + and COM jacks.
7 Measuring Resistance – kΩ/Ω Function (METRISO BASE/TECH) Ð Connect the device under test to the + and COM jacks. Resistance can only be measured at voltage-free objects. If mains voltage or external voltage is applied to the measurement inputs, measurement cannot be started. This is indicated by the high-voltage symbol which appears at the display. Ð Select measuring function kΩ or Ω with the rotary switch.
8 Measuring Low-Value Resistance (up to 10 Ohm) – RLO Function RLO According to the regulations, the measurement of low-value resistance at protective conductors, earth conductors or equipotential bonding must be performed with (automatic) polarity reversal of the test voltage, or with current flow in one or the other direction. ! + Attention! In the measuring function RLO, measurements are performed with currents about 200 mA.
Measurement Types You can choose one of two different types of measurement: • Measuring sequence with automatic polarity reversal (reversal of current flow direction) • Manual measurement with specified current flow direction 8.1 Measurement with Automatic Polarity Reversal – AUTO Function Automatic polarity reversal is selected as a default value. MAN does not appear at the display.
8.2 Measurement with Manual Polarity Reversal – MAN Function In order to determine whether or not the obtained results are independent of current flow direction, measurement can be performed separately for both directions. Ð Press the scroll keys to this end, depending upon the desired current flow direction: MAN and Ω→ or MAN and ←Ω appear at the display. Ð Start an individual measurement by briefly pressing the START key, or initiate continuous measurement by briefly pressing the CONTIN key.
8.3 Taking Measurement Cables and Extension Cables into Account (up to 10 Ohm) – ZERO Function (Roffset) Measurement cable ohmic resistance can be subtracted from the measurement results automatically. Proceed as follows: Ð With the switch in the SETUP position and the SET menu at the display, select the rLEAd parameter. Refer to page 11 for further instructions.
Characteristic Values U AC/ DC Measuring Range 100 k 10.0 kΩ ... 99.9 kΩ 1M 100 kΩ ... 999 kΩ 1k 10 M 1.00 MΩ ... 9.99 MΩ 10 k 100 M 10.0 MΩ ... 99.9 MΩ 100 k TECH: 250 V / 500 V / 1000 V Range METRISO BASE METRISO INTRO METRISO TECH RLO R Reso- Open-Circuit lution Voltage U0max UiSO BASE: 250 V / 500 V BASE/TECH: 100 V RINS BASE/TECH: 50 V Meas. Qty. INTRO: 250 V ... 1000 V 10 METRISO BASE METRISO TECH Display range as of 01.
Reference Conditions Power Supply Reference temperature+ 23 °C ±3 K Relative humidity 40 ... 75% Measured quantity frequency 45 Hz ... 65 Hz Measured quantity waveform Sine, deviation between TRMS and rectified value < 1% Battery voltage 9.5 V ±0.
Electromagnetic Compatibility (EMC) Displays Interference emission Interference immunity Digital display EN 61326-1:2006 class B EN 61326-1:2006 Ambient Conditions Accuracy temperature range Operating temperature Storage temp. range Relative humidity Elevation Calibration interval 0 ... +40 °C –10 ... +50 °C –25 ... +70 °C (without batteries) Up to 75% (max. 85% during storage/transport), no condensation allowed Max.
Display Values in Consideration of Measuring Uncertainty Table for determining minimum display values for insulation resistance in consideration of the instrument’s measuring uncertainty. Limit Value 020 kΩ 100 kΩ 200 kΩ 500 kΩ 0.20 MΩ 0.50 MΩ 1.00 MΩ 2.00 MΩ 5.00 MΩ 10.0 MΩ 20.0 MΩ 50.0 MΩ Minimum Display Value 025 kΩ 111 kΩ 219 kΩ 541 kΩ 0.25 MΩ 0.57 MΩ 1.11 MΩ 2.19 MΩ 5.41 MΩ 11.1 MΩ 21.9 MΩ 54.1 MΩ Limit Value Minimum Display Value 100 MΩ 200 MΩ 500 MΩ 111 MΩ 219 MΩ 541 MΩ 0.15 Ω 0.20 Ω 0.50 Ω 1.
11 Ux/V List of Abbreviations and their Meanings Voltage 500 UN = 500V 400 UISO Test voltage or nominal voltage U AC/DC Measured voltage (sinusoidal alternating voltage) 300 200 Resistance 100 0 Rx/kΩ 500 LIMIT Offset RISO RLO Ux/V Limit value for insulation resistance or low-value resistance Correction value for measurement cable resistance Insulation resistance Low-value resistance (cable resistance) 1000 UN = 1000V 800 Fuse FUSE 600 “Blown fuse” message 400 200 0 Rx/MΩ 1 12 Maintenan
Note Prior to lengthy periods of rest (e. g. holiday), we recommend removing the (rechargeable) batteries. This helps to prevent excessive depletion or leakage of batteries, which, under unfavourable circumstances, may cause damage to the instrument. If leakage has occurred, the electrolyte must be carefully and completely removed with a damp cloth before installing new batteries. Replacing the Batteries See section 3.2 and section 12.3. 12.
12.2.2 Electronic Fuse This fuse protects low-resistance (Rlo) and resistance measurements (kΩ) from overloading (electronic hardware circuit). „EL.Fu“ appears when the fuse blows. Ð Eliminate the cause of overloading. This error message must be cleared by switching to OFF position. 12.3 Housing No special maintenance is required for the housing. Keep outside surfaces clean. Use a slightly dampened cloth or a plastic cleaner for cleaning. Avoid the use of cleansers, abrasives or solvents.
14 Appendix 14.
Insulation Resistance Measurement in Different Types of Systems TT TN–S • • • With or without consumer With or without consumer N – PE, separately 3-phase current (switched at all poles) TN–C • • 32 With or without consumer N – PE, together GMC-I Messtechnik GmbH
Caution: – – – – – Open the overcurrent protective device Disconnect the N conductor Jumper the L and N conductors Insulation measurement between L conductors and N to PE Device switch can be open – if single-pole In the distributor: individual and combined measurements GMC-I Messtechnik GmbH 33
14.2 Attaching the strap to the test instrument Feed the strap through from the front of the test instrument and secure it with the slotted screw (M3). 2 Slide the strap through the test probe holder. Front View Side View Strap Clasp Front 14.3 Back Attaching the Test Probe Holder to the Carrying Strap 1 Detach the strap from the instrument: Turn out the slotted screw (M3) at the bottom. Clasp Bottom Left 34 Bottom Right Eyelet for Attachment to Tester (METRISO ...
14.4 3 Feed the strap through from the front of the test instrument and secure it with the slotted screw (M3). Technical Data for Measurement Cables (scope of delivery: KS17-4 safety cable set) Electrical Safety Maximum rated voltage 600 V 1000 V Measuring category CAT IV CAT III CAT II Max. rated current: 1A 1A 16 A With safety cap attached Without safety cap 1000 V • • — — — • Ambient Conditions (EN 61010-031) Front Back Temperature Relative humidity Pollution degree –20 °C ...
Optional Accessories (not included) ISO Calibrator 1 (material no. M662A) Calibration adapter for testing the accuracy of instruments used for measuring insulation resistance and low-resistance for test voltages up to 1000 V (per VDE 0413, parts 1, 2, 4 and 10) KS-C KY95-3 (material no. Z541F) Cable set consisting of measurement cable and shielded high-resistance measurement cable for measurements in the GΩ range (material no.
15 Repair and Replacement Parts Service Calibration Center* and Rental Instrument Service If required please contact: GMC-I Service GmbH Service Center Thomas-Mann-Str. 20 90471 Nürnberg, Germany Phone: +49 911 817718-0 Fax: +49 911 817718-253 e-mail: service@gossenmetrawatt.com www.gmci-service.com This address is only valid in Germany. Please contact our representatives or subsidiaries for service in other countries.
GMC-I Messtechnik GmbH
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Edited in Germany • Subject 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.
