SEW 6280 TB Professional Instrument Calibration Check Box

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The SEW 6280 TB is designed for field or workshop use and can test a wide range of instrumentation.  The control panel on the SEW 6280 TB is divided into three sections with each function having its own section. To operate the test box, the user simply plugs the power cable of the SEW 6280 TB into a standard power outlet and plugs the instrument to be tested into the SEW 6280 TB.  The image shows a “multifunction” power socket on the instrument but all instruments delivered in Australia will be fitted with the correct 3 pin Australian socket.

For RCD tester verification, the SEW 6280 TB can simulate a 10mA, 30mA and 150mA RCD with trip times of 150ms or 30ms (in the case of a 150mA simulation). Loop impedance is checked by plugging the meter being tested into the loop tester section of the test box and operating the meter being tested. The bi-directional switch on the SEW 6280 TB allows the operator to measure the local supply loop, and then by changing the switch the test box can simulate a loop impedance value (supply loop + 1 Ohm) to verify the accuracy of the loop impedance tester being checked. Finally the SEW 6280 TB can check insulation resistance testers, in both insulation resistance mode as well as continuity mode with a number of pre-set values and test voltages.

pdf_sml    SEW 6280TB Datasheet
pdf_sml    SEW 6280 TB Application Note
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The SEW 6280 TB Calibration Test Box is used for checking the integrity and calibration of insulation resistance testers, loop impedance testers and RCD testers, as well as multifunction electrical testers, which may have all three functions in one instrument. The SEW 6280 TB comes in a hard case for protection in the field.

SEW 6280 TB Check Box Features:

  • Wide range of operating voltages from AC 210V/50Hz to 250V/50Hz
  • Calibration check of: RCD Testers, Loop Testers and Insulation Testers
  • Simulate 3 RCD Test currents and Trip times
  • Wiring checks: Phase, Neutral, Earth
  • Fuse protected
  • Supplied with test leads and plugs
  • Plugs into main supply outlets for power


● For checking AC voltage.
● For checking a RCD tester’s test current & time in mA(ms).
● For checking a loop tester.
● For wiring check (Phase, Neutral, Earth).
● For checking continuity.
● For checking insulation (The maximum is 1.2kV).
● For checking UK16th edition.
  RCD Testing
  Range   10mA @ 150ms
30mA @ 150ms
150mA @ 30ms
  Insulation Testing  
  Range   1MΩ / 9.9MΩ / 99MΩ
  Accuracy  ± 1%
  Max. Testing   1.2kV
  Continuity Testing
  Range   0.5Ω / 2Ω / 10Ω
  Accuracy   ± 0.05Ω / ± 0.1Ω / ± 0.2Ω
  Max. Current   300mA
  LOOP Testing
  Range  Supply Loop / Supply Loop +1Ω
  Accuracy   0.45Ω ± 0.05Ω / 1.45Ω ± 0.05Ω
• Dimension: 330(L)x260(W)x160(D)mm
• Weight: Approx. 2570g