Operating Instructions METRALINE RCDCHECK RCD Test Instrument 3-349-694-03 3/6.
Contents Page 1 Introduction ...................................................................... 2 1.1 1.2 1.3 1.4 1.5 1.6 Scope of Delivery ...........................................................................2 Optional accessories ......................................................................2 Safety Precautions .........................................................................2 Applications ..................................................................................
Exclusion of Liability When testing systems with RCCBs, the latter may switch off. This may occur even though the test does not normally provide for it. Leakage currents may be present which, in combination with the test current of the test instrument, exceed the shutdown threshold value of the RCCB. PCs which are operated in proximity to such RCCB systems may switch off as a consequence. This may result in inadvertent loss of data.
2.2 Operation and OLED Display 3.2 1 Graphic OLED display 2 START key: – Switch on: Press and hold until the display lights up. – Start measurement: 1 Press and hold until measurement starts. Briefly pressing starts measurement if voltage is applied to the test probes (exception for Uc: is displayed immediately after voltage is 2 applied). – Measurement point illumina3 tion: Press briefly to switch illumination on and off. 4 – Switch off: Press twice briefly to switch the instrument off.
Performing the Measurement Securely contact the device under test with the test probes before triggering the measurement by pressing the START key. Afterwards, check to see whether or not the displayed line voltage value is stable. Do not remove the test probes from the device under test during measurement. Measurement results might otherwise be distorted. Figure 3.5: Touch Voltage > 50 V Figure 3.
3.4 Measuring the Individual Parameters of an RCD RL … fault loop impedance; RL = Uc*/ IN, where Uc* is actually measured touch voltage, i.e. without a safety coefficient from the table at the beginning of this section. 3.4.1 Touch Voltage Uc The displayed touch voltage refers to nominal residual current. For safety reasons, it is multiplied by the following coefficients: R C D ty p e C o n ta c t v o lta g e is p r o p o r t io n a l to : 1 ,0 5 I 2 3.4.
3.5 Further Device Functions Phase Detection If the symbol shown at the right appears in the lower righthand corner of the display, and if a phase is contacted with the fixed test probe, the symbol is changed: X L Figure 3.18: Example: Waiting Time for Measuring Selective RCDs The other test probe may not be connected anywhere or make any contact at all! 3.4.3 Tripping Current I ➭ Select the I function by pressing the FUNC key. ➭ Set residual current with the IN key.
4 Technical Data 4.1 Measuring Functions Tripping Current I Range per EN 61557-6 Measuring Range Resolution for I Residual Current Devices (RCD) – General Specifications 0.4 to 1.1 IN (type: AC) Nom. residual current 10, 30, 100, 300, 500 mA Deviation from nominal residual current (–0/+0.1)I; I= IN, 2x IN, 5x IN Waveform of the nom.
5 Maintenance 5.1 Device Power Supply 5.1.2 Recharging the Batteries ! Caution: Dangerous Voltage! Dangerous voltage in battery compartment! Before Opening the Battery Compartment Lid Remove the test probes from the device under test and switch the instrument off before opening the battery compartment lid. Operate Only With Inserted Battery Compartment Lid The instrument may not be placed into service if the battery compartment lid has not been inserted and secured with the screws.
5.3 6 Recalibration The measuring tasks performed with your instrument, and the stressing it’s subjected to, influence aging of its components and may result in deviation from the specified levels of accuracy. In the case of strict measuring accuracy requirements, as well as in the event of use at construction sites with frequent stress due to transport and considerable temperature fluctuation, we recommend a relatively short calibration interval of once per year.
