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  • 07/04/2018

    works wel. type ZC25-4 is deliverd, the -1 is 100V, -2 is 250V and -3 = 500V. Checked ist with AVO and scope with 1:100 probe. Output voltage is 1000 VDC at 1000 VDC range of AVO; de measured value is 20 MOhm, just the internal resistance of the AVO. At 3000 VDC the measured value is 60 Mohm. With the Philips PM3065B I measured 1000VDC with 1000Vtt AC ripple. Frequency 345 C/s.

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  • 03/07/2019

    Item as ordered. Tested meter and works great. Would recommend this item,Electronic Engineer.

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  • 01/08/2016

    A nicely finished and presented Insulation tester. I was initially doubtful that the hand-cranked magneto would generate 1000 V but connecting it to my old Avo and turning the crank fast gave a full scale deflection on the 1000 Volt DC range so it works fine. This is an economical alternative to an Evershed & Vignolles Megger Tester and is suitable for the home and professional electrician to check house wiring, motor winding insulation, 'leaky' elements in kettles, immersion heaters etc. My only negative comment is that the markings on the instrument and the instructions are all in Chinese characters, but if you've used one of these before you shouldn't have a problem.

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  • 20/11/2017

    Good tester, but full plastic. Manual: Insulation tester 1. Turn the handle icreasing the speed until the clutch slip at 120 R.P.M approx. to get an accurate & steady reading. 2. For an insulation test between conductors: Connect to terminals "Line" & "Earth" separately. 3. For an Earth test: Connect the "Line" terminal to the circuit & the "Earth" terminal to a good Earth. 4. For high resistance test: The "guard" sould be connected to the inner insulation between the terminals to prevent from innacurate reading due to line leakage.

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  • 09/01/2018

    Both testers were used to test and solve problem with a 3 phase motor with intermittend shorts. Fault isolated and engine back in service

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  • 24/03/2016

    parfait, correspond parfaitement à l'annonce, bien en ordre

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  • 15/01/2020

    El dispositivo perfecto, nuevo y sin embargo fuera de la caja vieja. Me recuerda a mis años de juventud. Te daré una "A" por ello.

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  • 16/11/2017

    GOOD CONSTRUTION METALIC

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  • 07/12/2016

    Item as ordered. Tested meter and works great. Would recommend this item. JR Electronic Engineer.

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  • 31/08/2016

    Used this multiple times always given accurate readings, great value for money.

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