Martindale PD440SRDX 440V Advanced Proving Unit Reviews

Martindale PD440SRDX 440V Advanced Proving Unit The Martindale PD440SRDX 440V Advanced Proving Unit that safety proves the operation of voltage indicators and tests lamps ups to 440V ensuring the device is working correctly to industry standards. With four stepped voltage thresholds of 440V, 230V, 125V and 50V matched to common two pole tester thresholds. The PD440SRDX boasts AC or DC output which is selectable by push button switch. CALCHECK With the unique CALCHECK function the PD440SRDX, allows for the easy verification of the insulation and low resistance ranges of 18th edition multifunction testers, making it ideal for identifying potential calibration issues prior to certifying a new wiring installation or carrying out a condition report. The individual reference resistance pads with nominal values of 0.5Ω and 1.0Ω for continuity measurements and 0.5MΩ and 1.0MΩ for insulation resistance The PD440SRDX provides proving unit output voltages that are stepped with individual LED indicators for each voltage from 50V to 440V with the proving unit outputting the haughtiest voltage on contact, checking all the LEDs up to 440V allowing for safe isolation use and then steps down through each level automatically. At the end of a test, the PD440SRDX will show the low resistance across the terminals to verify the continuity function of two pole testers. The PD440SRDX boasts a low battery life with a low battery indicator and auto power off function preserving battery life. The unit also comes with the included MAG3 high strength magnetic hanger with a tough over moulded low profile design.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 CALCHECK insulation test resistance: 0.5MΩ (max test voltage 1kV) 1.0MΩ (max test voltage 1kV) CALCHECK continuity test resistance0.5Ω (max test current 200mA) Proving low and high impedance voltage indicators, test lamps and two pole testers Stepped voltage output matched to two pole testers thresholds LED voltage thresholds 440V, 230V, 120V and 50V AC and DC output mode High/low Z compatible MG3 high strength magnetic hanger Colour coded voltage output up to 440V Over moulded low profile design Long battery life and auto power off function AC/DC output selectable by push switch