Operating Instructions 3-349-346-03 3/3.
1 2 10 9 8 2a 3 4 7 6 5 Figure 1 1 2 2a 3 4 5 6 7 8 9 10 2 Controls Measuring probe on housing (positive pole) Scale Adjusting screw for mechanical zero balancing Rotary switch for – Ω : Low-resistance measurement (toggle switch in Ω position) – 100 V/250 V/500 V: Toggle switch in neutral position: • Voltage measurement • Test for absence of voltage and discharge capacitive DUTs Toggle switch in MΩ position: • Insulation measurement with the selected test voltage Toggle switch for switching among
Meanings of symbols on the instrument: Indicates EC conformity Continuous, doubled or reinforced insulation ! CAT II Warning concerning a source of danger (attention: observe documentation!) Maximum allowable voltage between the test probes (1 and 8) and earth is 600 V, category II. This device may not be disposed of with the trash. Further information regarding the WEEE mark can be accessed on the Internet at www.gossenmetrawatt.com by entering the search term ’WEEE’.
1 Safety Precautions The METRISO 5024 insulation measuring instrument is manufactured and tested in accordance with the following standards: IEC 61010-1/EN 61010-1/VDE 0411-1, IEC 61557-2/EN 61557-2/VDE 0413-2 IEC 61557-4/EN 61557-4/VDE 0413-4 IEC 61326-1/EN 61326-1 IEC 61000-4-2/EN 61000-4-2 IEC 61000-4-3/EN 61000-4-3 IEC 61000-4-4/EN 61000-4-4 IEC 61000-4-5/EN 61000-4-5 IEC 61000-4-6/EN 61000-4-6 IEC 61000-4-8/EN 61000-4-8 In order to maintain flawless technical safety conditions, and to assure safe use
uppermost scale, low-resistance at the middle scale and voltage at the bottom scale. The device’s operating status and battery charge level are indicated with the 2-color LED in the scale (Figure 1). The battery compartment is located in the housing base (6). The procedure for replacing batteries is described in 3.2. All measurements are performed with two test probes: • One test probe (1) is permanently attached to the housing – positive pole.
3.4 Checking Device Functions The METRISO 5024 functions as a voltmeter when the toggle switch (4) is in the neutral position: Ð The voltmeter function can be checked by applying a voltage to both test probes (1 and 8), e.g. line voltage from a mains outlet. The rotary switch must be set to any of positions 100 V, 250 V or 500 V.
4 Operation 4.1 Voltage Measurement ! Attention! Before connecting the measuring instrument to an external source of voltage, make sure that the battery compartment has been correctly secured to the housing because the battery connector terminals are electrically connected to the measuring circuit! No auxiliary power is required for voltage measurement, i.e. no batteries need to be inserted into the battery compartment.
4.2 Insulation Resistance Measurement (VDE 0413, part 2 / EN 61557, part 2) ! Attention! Insulation resistance measurements may only be performed on voltage-free system components and devices! Adhere to the prescribed sequence: Ω Ð Set the rotary switch (3) to the desired test voltage: 500 V 100 V, 250 V or 500 V. 250 V Ð Contact the device under test with the test probes 100 V (1: positive pole and 8: negative pole).
380 kΩ at an operating voltage of 380 V. In order to assure that the MΩ Range insulation resistance limit values Limit value Min. Display * specified in the applicable 0.130 MΩ 0.10 MΩ standards are not exceeded, 0.325 MΩ 0.25 MΩ maximum measuring error of the 0.520 MΩ 0.40 MΩ 0.650 MΩ 0.50 MΩ measuring instrument must be 0.780 MΩ 0.60 MΩ taken into consideration. The 0.910 MΩ 0.70 MΩ required minimum display values 1.040 MΩ 0.80 MΩ for various limit values are listed in 1.300 MΩ 1 MΩ 2.
5 Maintenance – Recalibration 5.1 Housing No special maintenance is required for the housing. Keep outside surfaces clean. Use a slightly dampened cloth for cleaning. Avoid the use of cleansers, abrasives and solvents. 5.2 Batteries Check the batteries at short regular intervals to makes sure no leakage has occurred. If leakage occurs, electrolyte must be fully removed from the instrument and new batteries must be installed.
Ð Turn the device over so that the control panel faces up and remove the housing top (i.e. control panel). Remove the fuse from its holder with the help of an object such as a test probe, and replace it with a new fuse. (A replacement fuse is available in the carrying pouch).
We are pleased to perform DKD or factory calibrations for you in our calibration laboratory. Please visit our website at www.gossenmetrawatt.com (→ Services → DKD Calibration Center or → FAQs → Calibration questions and answers). By having your measuring instrument calibrated regularly, you fulfill the requirements of a quality management system per DIN EN ISO 9001. 5.
Reference Conditions Normal position of use Ambient temperature Relative humidity Measured quantity frequency Line voltage waveshape Battery voltage horizontal +23 °C ±2 K 40 ... 60% 45 ... 65 Hz (during voltage measurement) sinusoidal (RMS value) 5.5 V ±0.
7 Repair and Replacement Parts Service Calibration Center * and Rental Instrument Service When you need service, please contact: GMC-I Service GmbH Service Center Thomas-Mann-Strasse 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.
