Gossen MetraWatt AT3-III E Operating Instructions Manual
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Gossen MetraWatt AT3-III E Operating Instructions Manual

Safety tester
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Operating Instructions
AT3-III E Safety Tester
For Testing Single and 3-Phase Consumers
and Extension Cables in Combination with
3-349-155-37
SECUTEST.../SECULIFE ST Test Instruments
9/11.11

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Summary of Contents for Gossen MetraWatt AT3-III E

  • Page 1 Operating Instructions AT3-III E Safety Tester For Testing Single and 3-Phase Consumers and Extension Cables in Combination with 3-349-155-37 SECUTEST.../SECULIFE ST Test Instruments 9/11.11...
  • Page 2 SECUTEST Safety tester AT3-III E Device Plugs and Outlets Self-Test 1 CEE outlet 11 Test key for triggering I = residual current) n n 3P+N+PE, 32 A, 400 V Connectors for 2 CEE outlet SECUTEST... (as of version 3.1) Test Instrument...

  • Page 3: Table Of Contents

    SECUTEST... test instrument. 6.2 Measuring Insulation Resistance ....7 Note! 6.3 Testing for Short-Circuits, Interruptions and The AT3-III E safety tester is equipped with Reversed Conductors ........7 electronic error monitoring which disconnects the device under test from the mains in the event of Self-Test ............8...

  • Page 4: Connecting The Safety Tester To The Mains

    SECUTEST port (14) of • For REASONS OF SAFETY, the device under test the AT3-III E into sockets 2 and 3 at the must be turned off before switching to SECUTEST..“MAINS” so that dangerous devices under d) In order to test extension cables, insert the test test (e.g.

  • Page 5: Connecting A Device Under Test To The Safety Tester

    AT3-III E is used in systems protected with RCCBs rated less than 30 mA. Mains If the AT3-III E is out of use for a prolonged period signal lamps L1, L2 and L3 (9) go out. The of time, the earthing contact faces of the plug- function LED (10) blinks.

  • Page 6: Testing Of Differential Current During Automatic Testing Per Test Standard

    Safety tester AT3-III E 230/400 V 50 Hz Figure 1 Connecting Single and 3-Phase Devices to the AT3-III E and the SECUTEST... Testing of Differential Current During this test, L1, L2, L3 and N (short-circuited) during Automatic Testing per Test Standard are measured against PE with the preset high voltage (max.

  • Page 7: Measuring Protective Conductor Resistance

    230 V 50 Hz SECUTEST Figure 2 Connecting Single Phase Extension Cables to the AT3-III E with the SECUTEST... SECUTEST 230/400 V 50 Hz Figure 3 Connecting 3-Phase (or Single Phase) Extension Cables to the AT3-III E with the SECUTEST... GMC-I Messtechnik GmbH...

  • Page 8: Self-Test

    Contact protective conductor potential at the Nominal Ranges of Use mains system which is supplying power to the Line Voltage AT3-III E with the test probe at the end of the 207  253 V AC L1/L2/L3/N probe cable from the SECUTEST..., e.g. at the 49 ...

  • Page 9: Maintenance

    Mechanical Design Device Return and Environmentally Compatible Disposal Protection case: IP40 The instrument is a category 9 product terminals: IP20 (monitoring and control instrument) in accordance with ElektroG (German Electrical and Electronic Extract from table on the meaning of IP codes Device Law).
  • Page 10 Printed in Germany • Subject to change without notice • A pdf version is available on the internet Phone +49 911 8602-111 GMC-I Messtechnik GmbH +49 911 8602-777 Südwestpark 15 E-Mail info@gossenmetrawatt.com 90449 Nürnberg • Germany www.gossenmetrawatt.com...

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