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. 192-5869
FabrikantnummerRSVIPDLOK150
FabrikantMartindale
€ 377,96
Each
Aantal stuks
3.5mA - LED AA RSCAL Battery, Mains - - - - +55°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. 895-9433
FabrikantnummerRSVT25/PD
FabrikantMartindale
€ 347,40
Each
Aantal stuks
3.5mA 700V - 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. 181-5014
Fabrikantnummer1001-561
FabrikantMegger
€ 133,00
Each
Aantal stuks
- 50 → 690V LED AA - Battery 130 x 48 x 68mm 346g 68mm 130mm +40°C -10°C Mpu690 -
RS-stocknr. 375-5337
FabrikantnummerP240
FabrikantBlack Star
€ 126,00
Each
Aantal stuks
2mA 240V - - RSCAL Battery - - - - - - 59180-8020 -
RS-stocknr. 706-8586
FabrikantnummerMTL10/PD
FabrikantJohn Drummond
€ 188,00
Each
Aantal stuks
3.5mA 50 V ac/dc, 100 V ac/dc, 200 V ac/dc, 400 V ac/dc - - - Mains 213 x 112 x 72mm 320g 72mm 213mm +55°C -10°C - -
RS-stocknr. 242-4111
FabrikantnummerP240
FabrikantBlack Star
€ 78,00
Each
Aantal stuks
2mA 240V - - - Battery - - - - - - 59180-8020 -
RS-stocknr. 193-5335
FabrikantnummerMARPD440SX
FabrikantMartindale
€ 128,00
Each
Aantal stuks
200mA 440V ac LED AA - Battery 150 x 80 x 35mm 350g 35mm 150mm +40°C -10°C PD440SX -
RS-stocknr. 181-5041
Fabrikantnummer1001-561
FabrikantMegger
€ 181,00
Each
Aantal stuks
- 50 → 690V LED AA RSCAL Battery 130 x 48 x 68mm 346g 68mm 130mm +40°C -10°C Mpu690 -
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. 193-5334
FabrikantnummerMARPD440S
FabrikantMartindale
€ 106,00
Each
Aantal stuks
200mA 440V ac LED AA - Battery 150 x 80 x 35mm 350g 35mm 150mm +40°C -10°C PD440S -
RS-stocknr. 706-8713
FabrikantnummerMTL20/PD
FabrikantJohn Drummond
€ 252,00
Each
Aantal stuks
28mA 50 V ac/dc, 100 V ac/dc, 200 V ac/dc, 400 V ac/dc - - RSCAL Mains 213 x 112 x 72mm 350g 72mm 213mm +55°C -10°C - -
RS-stocknr. 706-8719
FabrikantnummerMTL10/PD
FabrikantJohn Drummond
€ 236,00
Each
Aantal stuks
3.5mA 50 V ac/dc, 100 V ac/dc, 200 V ac/dc, 400 V ac/dc - - RSCAL Mains 213 x 112 x 72mm 320g 72mm 213mm +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. 193-5358
FabrikantnummerMARPD690SX
FabrikantMartindale
€ 181,00
Each
Aantal stuks
200mA 690V ac LED AA RSCAL Battery 150 x 80 x 35mm 350g 35mm 150mm +40°C -10°C PD690SX -
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 -