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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Description Price Test Current Rating Output Voltage Display Type Battery Type Power Source Dimensions Weight Height Length Maximum Operating Temperature Minimum Operating Temperature Model Number p Plug Type Width
RS庫存編號 740-1479
製造零件編號PD440
BrandMartindale
HK$1,109.65
單位
- 440V - AA Battery 143 x 84 x 50mm 400g 50mm 143mm +40°C -10°C PD440 - 84mm
RS庫存編號 865-4759
製造零件編號RSVIPDLOK150
BrandMartindale
HK$3,331.56
單位
3.5mA - LED AA Battery, Mains - - - - +55°C -10°C - - -
RS庫存編號 782-4437
製造零件編號RSVIDP138
BrandMartindale
HK$1,974.71
單位
3.5mA 440V LED AA Mains 205 x 67 x 27mm 130g 27mm 205mm +55°C -10°C - - 67mm
RS庫存編號 897-7135
製造零件編號RSVT28/PD
BrandMartindale
HK$2,277.57
單位
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 - - 84mm
RS庫存編號 706-8589
製造零件編號MTL20/PD
HK$2,217.00
單位
28mA 50 V ac/dc, 100 V ac/dc, 200 V ac/dc, 400 V ac/dc - - Mains 213 x 112 x 72mm 350g 72mm 213mm +55°C -10°C - - 112mm
RS庫存編號 865-4756
製造零件編號RSVIPD150
BrandMartindale
HK$2,338.15
單位
3.5mA 700V LED AA Battery, Mains 205 x 67 x 27mm 130g 27mm 205mm +40°C -10°C - - 67mm
RS庫存編號 860-6735
製造零件編號RSSMKIT5
BrandMartindale
HK$2,871.20
單位
- - - - - - - - - - - - - -
RS庫存編號 193-5336
製造零件編號MARPD690S
BrandMartindale
HK$1,199.36
單位
200mA 690V ac LED AA Battery 150 x 80 x 35mm 350g 35mm 150mm +40°C -10°C PD690S - 80mm
RS庫存編號 704-7740
製造零件編號SP 200
HK$1,070.94
單位
36mA 50 → 690V - AA Battery 130 x 65 x 49mm 350g 49mm 130mm +40°C -10°C SP-200 - 65mm
RS庫存編號 242-4111
製造零件編號P240
BrandBlack Star
HK$763.23
單位
2mA 240V - - Battery - - - - - - 59180-8020 - -
RS庫存編號 719-0894
製造零件編號RSPD690
BrandMartindale
HK$1,233.27
單位
- 700V - AA Battery 143 x 84 x 50mm 400g 50mm 143mm +40°C -10°C PD690 - 84mm
RS庫存編號 782-4430
製造零件編號VIPDLOK138
BrandMartindale
HK$2,895.46
單位
3.5mA 50 → 600V ac/dc LED - Mains 205 x 67 x 27mm 130g 27mm 205mm +55°C -10°C - - 67mm
RS庫存編號 193-5337
製造零件編號MARPD690SX
BrandMartindale
HK$1,441.66
單位
200mA 690V ac LED AA Battery 150 x 80 x 35mm 350g 35mm 150mm +40°C -10°C PD690SX - 80mm
RS庫存編號 704-7756
製造零件編號VIP100 / SP200
HK$1,392.71
單位
3.5mA 50 → 690V LED AA Battery 130 x 65 x 49mm 350g 49mm 130mm +40°C -10°C - - 65mm
RS庫存編號 704-7750
製造零件編號VIP150 / SP200
HK$1,574.43
單位
3.5mA 50 → 690V LED AA Battery 130 x 65 x 49mm 350g 49mm 130mm +40°C -10°C - - 65mm
RS庫存編號 897-7131
製造零件編號RSVT25/PD
BrandMartindale
HK$2,011.05
單位
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 - - 84mm
RS庫存編號 193-5334
製造零件編號MARPD440S
BrandMartindale
HK$1,150.90
單位
200mA 440V ac LED AA Battery 150 x 80 x 35mm 350g 35mm 150mm +40°C -10°C PD440S - 80mm
RS庫存編號 180-9209
製造零件編號MTL15PD
HK$1,894.26
單位
3.5mA 700V ac LCD AA Battery 84 x 143 x 50mm 400g 50mm 84mm +40°C -10°C - - 143mm
RS庫存編號 193-8692
BrandRS PRO
HK$656.98
單位
0.03mA 12 → 1000V ac/dc LCD AAA Battery 73 x 34 x 240mm 237g 240mm 73mm +55°C -10°C - - 34mm
RS庫存編號 706-8586
製造零件編號MTL10/PD
HK$2,047.39
單位
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 - - 112mm