Proving Units

A proving unit is a portable device that’s designed to be used as a two-pole tester, to verify the safe operation of voltage testers such as Multimeters and clamp meters and the accuracy is maintained. As we strongly advise to calibrate such products, when used in combination with a proving unit peace of mind will be made to ensure accuracy is maintained between calibration intervals. Proving units can test voltages from AC and DC instruments, whilst reducing the risk of a shock or arc flash by validating the testing equipment.

What are the different types of Proving Unit?

As we know the proving units are portable making them easy to transport and use in many environments, however, there are many varieties of proving units to accommodate the vast voltage ranges of electrical equipment. For example, low voltage proving units such as the Martindale PD240 can test voltages up to 240V, great for residential appliances. If you need something capable of testing high voltage testers, then the Martindale PD690 kit is a great option by testing voltages from 12V to 700V and with a proving unit accompanied by a voltage tester in a neat carry pouch.

Proving unit can supply a range of voltages to the two-pole voltage testers to ensure a thorough test at the applied voltages. An LED light is the sign that the two-pole voltage tester is functioning correctly, allowing you to proceed with your job. Like most devices in a toolbox or bag they can be susceptible to dust, water and general knocks, that’s why it’s important to maintain a testing schedule of your voltage testers. As these aspects can affect the accuracy of voltage testers and if inaccuracies aren’t noticed then this is when safety is in doubt. RS Components offers an in-house calibration service (RSCAL) prior to delivery, but also offers a yearly service for these products.

Why Choose RS Components for a Proving Unit?

Whether you’re an electrician or another professional, then RS Components has a comprehensive range of Proving Units and Proving Unit Kits to choose from leading brands such as Martindale, Fluke, Black Star and Megger. On hand advice from our technical experts to aid your decisions and our inhouse calibration service. See more about our calibration services here.


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Omschrijving Prijs Test Current Rating Output Voltage Display Type Battery Type Calibrated Power Source Dimensions Weight Height Length Maximum Operating Temperature Minimum Operating Temperature Model Number p Plug Type
RS-stocknr. 782-4437
FabrikantnummerRSVIDP138
FabrikantMartindale
€ 188,00
Each
Aantal stuks
3.5mA 440V LED AA - Mains 205 x 67 x 27mm 130g 27mm 205mm +55°C -10°C - -
RS-stocknr. 781-8760
FabrikantnummerRSVIDP138
FabrikantMartindale
€ 236,00
Each
Aantal stuks
3.5mA 440V LED AA RSCAL Mains 205 x 67 x 27mm 130g 27mm 205mm +55°C -10°C - -
RS-stocknr. 735-6091
FabrikantnummerPD440
FabrikantMartindale
€ 171,00
Each
Aantal stuks
- 440V - AA RSCAL Battery 143 x 84 x 50mm 400g 50mm 143mm +40°C -10°C PD440 -
RS-stocknr. 740-1479
FabrikantnummerPD440
FabrikantMartindale
€ 101,00
Each
Aantal stuks
- 440V - AA - Battery 143 x 84 x 50mm 400g 50mm 143mm +40°C -10°C PD440 -
RS-stocknr. 192-5869
FabrikantnummerRSVIPDLOK150
FabrikantMartindale
€ 377,96
Each
Aantal stuks
3.5mA - LED AA RSCAL Battery, Mains - - - - +55°C -10°C - -
RS-stocknr. 897-7131
FabrikantnummerRSVT25/PD
FabrikantMartindale
€ 185,00
Each
Aantal stuks
3.5mA 700V - AAA - Battery 143 x 84 x 50 (Proving Unit) mm, 205 x 67 x 27 (Indicator) mm - 50mm 143mm +40°C -10°C - -
RS-stocknr. 865-4756
FabrikantnummerRSVIPD150
FabrikantMartindale
€ 222,00
Each
Aantal stuks
3.5mA 700V LED AA - Battery, Mains 205 x 67 x 27mm 130g 27mm 205mm +40°C -10°C - -
RS-stocknr. 192-5870
FabrikantnummerRSVIPD150
FabrikantMartindale
€ 293,96
Each
Aantal stuks
- 700V LED AA RSCAL Battery, Mains 205 x 67 x 27mm 130g 27mm 205mm +40°C -10°C - -
RS-stocknr. 895-9446
FabrikantnummerRSVT28/PD
FabrikantMartindale
€ 371,40
Each
Aantal stuks
3.5mA 700V LCD AAA UKAS Battery 143 x 84 x 50 (Proving Unit) mm, 205 x 67 x 27 (Indicator) mm - 50mm 143mm +40°C -10°C - -
RS-stocknr. 914-4714
FabrikantnummerPD240
FabrikantMartindale
€ 77,00
Each
Aantal stuks
2mA 240V dc - 9V - Battery 144 x 63 x 31mm 180g 31mm 144mm +40°C -10°C PD240 -
RS-stocknr. 782-4430
FabrikantnummerVIPDLOK138
FabrikantMartindale
€ 266,00
Each
Aantal stuks
3.5mA 50 → 600V ac/dc LED - - Mains 205 x 67 x 27mm 130g 27mm 205mm +55°C -10°C - -
RS-stocknr. 897-7135
FabrikantnummerRSVT28/PD
FabrikantMartindale
€ 209,00
Each
Aantal stuks
3.5mA 700V LCD AAA - Battery 143 x 84 x 50 (Proving Unit) mm, 205 x 67 x 27 (Indicator) mm - 50mm 143mm +40°C -10°C - -
RS-stocknr. 193-5355
FabrikantnummerMARPD440S
FabrikantMartindale
€ 154,00
Each
Aantal stuks
200mA 440V ac LED AA RSCAL Battery 150 x 80 x 35mm 350g 35mm 150mm +40°C -10°C PD440S -
RS-stocknr. 193-5356
FabrikantnummerMARPD440SX
FabrikantMartindale
€ 176,00
Each
Aantal stuks
200mA 440V ac LED AA RSCAL Battery 150 x 80 x 35mm 350g 35mm 150mm +40°C -10°C PD440SX -
RS-stocknr. 144-5454
FabrikantnummerRSVIPDLOKPRO138
FabrikantMartindale
€ 356,11
Each
Aantal stuks
- 400V - - - Mains - - - - - - - UK GS38
RS-stocknr. 188-2931
FabrikantnummerTB118KIT1
FabrikantMartindale
€ 351,00
Each
Aantal stuks
3.5mA 600V ac/dc - AA - Battery, Mains 205 x 67 x 27mm 130g 27mm 205mm +40°C -10°C - -
RS-stocknr. 865-4759
FabrikantnummerRSVIPDLOK150
FabrikantMartindale
€ 306,00
Each
Aantal stuks
3.5mA - LED AA - Battery, Mains - - - - +55°C -10°C - -
RS-stocknr. 913-7031
FabrikantnummerPD240
FabrikantMartindale
€ 123,00
Each
Aantal stuks
2mA 240V dc - 9V RSCAL Battery 144 x 63 x 31mm 180g 31mm 144mm +40°C -10°C PD240 -
RS-stocknr. 144-5455
FabrikantnummerRSVIPDLOKPRO150
FabrikantMartindale
€ 394,87
Each
Aantal stuks
- 690V LED - - Mains - - - - - - - UK GS38
RS-stocknr. 188-2941
FabrikantnummerTB118KIT1
FabrikantMartindale
€ 476,00
Each
Aantal stuks
3.5mA 600V ac/dc - AA RSCAL Battery, Mains 205 x 67 x 27mm 130g 27mm 205mm +40°C -10°C - -