Operating Instructions METRALINE RCDCHECK RCD Test Instrument 3-349-694-03 1/7.
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 ..................................................................................
! • • • 1.4 Use original accessories only. Maximum permissible voltage between test probe and ground is 300 V! Maximum permissible (externally applied) voltage between the test probes is 600 V! For transport purposes, the movable test probe can be attached to the housing and retained by a magnet such that both metal tips are simultaneously recessed and protected.
2.3 Initial Start-Up Prerequisites for RCD Measurement After inserting the batteries in accordance with section 5.1 on page 9, the measuring instrument is ready for operation. 3 Performing Measurements 3.1 Switching the Instrument On and Off The instrument is switched on by pressing and holding the START key.
Overheating 3.3 If several measurements with high IN values are performed one after the other, the red field indicates internal warming of the instrument. As temperature increases, the red field is gradually filled in and becomes wider. An inversely displayed STOP symbol appears when the maximum permissible temperature is exceeded. If the START key is pressed, the overheating symbol appears for about 1 second and further measurements are disabled.
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 tio 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 Recharging of the batteries begins as soon as the charger is connected to the mains and to the charging socket (see figure 2.1). Charging takes approximately 5 hours and 30 minutes (integrated safety timer) if the batteries have been fully depleted.
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.
