Martindale PD440S Proving Unit

SKU: MARTPD440S
  • 440V 50Hz constant voltage output
  • Forms part of a safe isolation procedure
  • Proves performance of voltage testers and test lamps
More Info
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Martindale PD440S Proving Unit

Martindale PD440S Proving Unit

The Martindale PD440S Proving Unit is a useful instrument that allows the user to prove the performance of a two-pole voltage tester as part of a safe isolation procedure. It provides a constant 440V, 50Hz voltage level and all the user needs to do to operate the proving unit is introduce both poles to the appropriate probe terminals. The output will last for up to 10 seconds or less if the probe tips are removed beforehand.

The Martindale PD440S has an LED low battery indication and separate LED that indicates when output is being generated. The proving unit is covered by a two-year warranty and is powered by six 1.5V AA batteries that are supplied alongside an MG3 magnetic hanger.

Martindale part number: MARPD440S

Martindale Proving Unit Comparison

  PD230SRD PD440S PD440SX PD440SRD PD440SRDX PD690S PD690SRD
Maximum Voltage Output 230V 440V 440V 440V 440V 690V 690V
LED Voltage Thresholds 230V, 120V, 50V 440V 440V, 230V,120V,50V 440V, 230V,120V,50V 440V, 230V,120V,50V 690V 690V, 440V,230V, 120V, 50V
AC Output Mode
DC Output Mode      
Low Battery LED
High/Low Z compatible
CALCHECK resistance values          
CALCHECK Insulation test resistance nominal values     0.5MΩ (max test voltage 1kV)/1.0MΩ (max test voltage 1kV)   0.5MΩ (max test voltage 1kV) 1.0MΩ (max test voltage 1kV)    
CALCHECK Continuity test resistance nominal values     0.5Ω (max test current 200mA) 1.0Ω (max test current 200mA)   0.5Ω (max test current 200mA) 1.0Ω (max test current 200mA)    
Colour Coded to match voltage indicators
Suitable for Multimeters & voltage testers (>9kΩ) Multimeters, Multifunction testers, 4-500V Voltage testers and Drummond test lamps Multimeters, Multifunction testers, 4-500V Voltage testers and Drummond test lamps Multimeters, Multifunction testers, 4-500V Voltage testers and Drummond test lamps Multimeters, Multifunction testers, 4-500V Voltage testers and Drummond test lamps Multimeters, 690V voltage testers & Drummond MTL15 test lamp Multimeters, 690V voltage testers & Drummond MTL15 test lamp

Key Features

  • Proves performance of a two-pole voltage tester
  • Part of a safe isolation procedure
  • Produces 440V 50Hz voltage level
  • Low battery and high voltage indications
  • Output continues for up to 10s
Specification

Electrical

  • Output voltage: 440V nominal 50Hz nominal
  • Voltage output times out after approximately 10s.

Environmental

  • Operating temperature: -10°C to 40°C at max. 70% R.H.
  • Altitude: up to 2000m
  • Pollution degree: 2

General

  • Power: Internal batteries
  • Internal batteries: 6 x 1.5V, AA alkaline batteries (IEC LR6, NEDA 15A)
  • Dimensions: 150 x 80 x 35mm.
  • Weight packed: 410g approx. with batteries
  • Includes: 6 x 1.5V AA alkaline batteries, instructions