SAFETY WARNINGS Safety Warnings and Precautions must be read and understood before the instrument is used. They must be observed during use. Continuity of protective conductors and earthed equipotential bonding of new or modified installations must be verified before carrying out RCD tests.
CONTENTS Safety warnings: Preventive maintenance Introduction Touch voltage enable/inhibit and Reverse polarity or General description line/neutral swapping Un–packing the carton General Specification LCD Display Basic and service errors Top panel Accessories and equipment Lid open/closure Repair and Warranty Preparations for use Batteries Preliminary test lead check General operating instructions...
INTRODUCTION GENERAL DESCRIPTION Thank you for purchasing the Megger RCD Tester. The RCDT300 Series test instruments have the following features: For your own safety and to get the maximum benefit from your instrument, please ensure that you read and understand the following...
DC breakers (1/2 I, I, 5I) Please complete the pre-paid warranty card and return it to Megger 30, 100, 300, 500 mA RCDs Limited as soon as possible to help us reduce any delays in supporting 10mA/1000mA RCD you should the need arise.
FRONT PANEL LCD DISPLAY Fuse Warning – Loop test type Supply connection indicators Noise RCD range refer to indicator (tripping or L-PE, L-N, N-PE Blown select: User manual non-tripping test) 10mA (RCDT320 only) Battery 30mA status LCD Display 100mA Test lead 300mA Test connections...
Connection Panel Lid open/closure RCDT300 Series test lead connections 1. Open lid by lifting up front panel tab (1). 2. Fold-away underneath instrument (2 & 3) and push into retaining slot Neutral or 2nd Single or 3Phase Mains plug test lead...
PREPARATIONS FOR USE (ALL INSTRUMENTS) GENERAL OPERATING INSTRUCTIONS Batteries Test inhibit The Megger RCDT300 series instruments are supplied with batteries The following condition may cause the instrument to inhibit testing: fitted. When batteries become exhausted, refer to section 8, battery replacement.
Backlight operation (LT 320 only) Setup Procedure The RCDT320 LCD display may be backlit. The backlight function can be Note: Line reversal and RCD touch voltage configuration features are selected at any time while the instrument is switched on by pressing the only available on the instruments as per the relevant tables in the BACKLIGHT button.
Megger Limited. electrical instrument or appliance. The power cord supplied with the Megger testers is a test lead that forms part of the measuring circuit of the instrument. The overall length of this lead must not be altered. If the power cord plug is not suitable for your type of socket outlets, do not use an adapter.
RESIDUAL CURRENT DEVICE [RCD] TESTING LED indicators Method of measurement Three RED led indicators show circuit connection status when correctly The plug ended test lead or two wire lead should be used for this connected to a live circuit. These are for indication purposes only and measurement.
RCD type selection NOTE: If the RCD should trip while performing a 1/2I test the error message ‘ ’ will be displayed instead of the time display. To select the RCD type to be tested: 1. Set the top RCD selection knob (top knob) to the desired RCD current range.
VOLTAGE MEASUREMENT 1. Select the appropriate RCD rated current on the top range knob. NOTE: Measured voltage should not exceed 300V phase to earth. 2. Select the RAMP test on the lower range knob. To measure the voltage of the electrical supply: 3.
FREQUENCY HZ (RCDT320 ONLY) REPLACING BATTERIES AND FUSES To measure the frequency of the electrical supply: Batteries Battery type: 8 x LR6 (AA), 1.5 V Alkaline, or 8 x 1.2V NiCAD, or 1. Set the instrument to the [Hz] range. 8 x 1.2V NiMH 2.
The fuse blown symbol indicates that an internal fuse has failed. This instrument is fitted with a factory fitted fuse and should only be replaced by an authorised Megger repairer. Contact your Megger distributor or call Megger Limited on 01304 502 102.
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TOUCH VOLTAGE DISPLAY AND REVERSE POLARITY OR LINE/NEUTRAL SWAPPING This table indicates which Megger RCD300 series testers feature the RCD Testers Line reversal detection Inhibit available Touch voltage inhibit feature: Swedish language RCD Testers Line reversal detection Inhibit available RCDT310-SE-SC...
SPECIFICATION RCD Test Ranges (to EN61557-6) Safety Test Current Accuracy: Meets the requirements of EN61010-1 Cat III 300 V phase to earth. IEC61557 No Trip Test: (∆I) –8% to –2% Complies with the following parts of EN61557, Electrical safety in low Trip Test: (I, 5I) +2% to +8% voltage systems up to 1000 V a.c.
Mains plug test lead CEE 7/7 6220-741 taking into effect of battery voltage, temperature, interference, and system voltage and frequency, where applicable. Mains plug test lead (AS/NZS 3112) 6220-790 Test lead case 6220-785 Megger Certification Software Powersuite Pro-Lite 16th 6111-697...
Megger instruments, using genuine qualified personnel. The protection is likely to be impaired if for example; Megger spare parts. A list of approved companies is available from the UK it shows visible damage; fails to perform the intended measurements; has address shown on this page.
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OTHER TECHNICAL SALES OFFICES Toronto CANADA, Sydney AUSTRALIA, Mumbai INDIA, Madrid SPAIN and the Kingdom of BAHRAIN. Megger products are distributed in 146 countries worldwide. This instrument is manufactured in the United Kingdom. The company reserves the right to change the specification or design without prior notice.
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