Category: Resistance Instruments

Resistance Instruments

  • Dielectric Oil Breakdown Voltage Flash Point Tester | PORTATEST A-2

    Oil Dielectric Breakdown Voltage Tester - Overview

    The PORTATEST A-2 Oil tester is a fully automatic tester for the determination of the dielectric breakdown voltage of the insulating liquid. Otherwise known as a flashpoint tester. It has been designed for laboratory use as well as field use for servicing and commissioning. The PORTATEST A-2 is very comfortable and easy to use. The requested testing standard may be selected via the menu. The corresponding electrode type as well as the electrode spacing will be displayed for confirmation before starting the test. After placing the test vessel with the oil sample into the test chamber, the protection lid needs to be closed. For maximum operator security, the protection lid is equipped with a security interlock key switching off the HV when opened during testing. When starting the test, sample temperature as well as a customer-specific sample number may be entered and will then be integrated into the test report printout. The testing sequence according to the selected testing standard is performed fully automatically.

    Oil dielectric breakdown voltage tester - Features

    • Fully automatic Oil tester for laboratory and field use during service and commissioning
    • Testing voltage up to 100 kV
    • Pre-Programmed for common national and international testing standards
    • Up to ten free programmable user testing sequences
    • Short switch-off time <1ms avoiding carbonization of the sample
    • Indication of individual breakdown values, average value, and standard deviation
    • Graphic-Display with backlight
    • Clear operator guiding via four soft keys F1 - F4
    • Input dialogue for sample temperature and sample number if required
    • Multi-language menu, language selected via the Setup menu
    • PC-data storage via serial interface RS232
    • Glass test vessel with a lid and magnetic stirrer
    • Different electrodes available (mushroom, sphere, or disc)
    • Electrode spacing adjustable
    • Integrated printer
    • Rugged aluminium housing with shielded test chamber
  • Standard Programmable Resistor SRP-10G0-10T0

    Standard Programmable Resistor SRP-10G0-10T0

    Standard Programmable Resistor - Overview 

    The SRP-10G0-10T0 calibrator, which has a range from 10GΩ to 10TΩ,  is a source of high resistance which is used as a standard in calibration and testing of analogue and digital insulation resistance meters. The selected resistance can be maintained for a long time under external direct voltage up to 10 000 V, provided that the current in the measuring circuit does not exceed 3 mA. The required resistance is set by the user using the calibrator's touch keypad or via an external PC application. The required value is set automatically thanks to the switching of a precise resistance matrix. The controlling processor calculates the required combination of resistors, ensuring adequate resistance precision.

  • Short Circuit Loop Impedance Meter MZC-305

    Safety Rating Cat IV at 600V labelSafety Rating Cat III at 1000V label

    Short Circuit Loop Impedance Meter - Overview

    The MZC-305 meter is a modern, easy-to-use, safety measuring device.  It is used to make measurements which help determine the electrical installation safety level. These tests help verify that if a fault occurs in an electrical installation, enough current will flow to operate the circuit breaker or fuse protecting the faulty circuit in the adequate, predetermined time.

    Short Circuit Loop Impedance Meter - Features

    • Loop impedance measurement resolution 0,01 Ω
    • Loop impedance measurement without tripping the circuit breaker > 30 mA with resolution 0,01 Ω (100...440 V)
    • Measurements possible in installations 110/190 V, 115/200 V, 127/220 V, 220/380V, 230/400 V, 240/415 V, 290/500 V and 400/690 V (range 100...750 V)
    • Short circuit current indication
    • Voltage measurement up to 750 V and up to 250 V with resolution 0,1 V
    • Measurements using Uni-Schuko adapter or test wires 1,2; 5; 10 and 20 m
    • Memory of 990 records
    • USB connection with PC
    • Powered by disposable or rechargeable (4xAA)
  • DO7 Plus Micro Ohmmeter

    DO7 Plus Micro Ohmmeter

    Micro Ohmmeter - DO7 plus - Overview

    The DO7Plus is a 10A micro ohmmeter, suitable for applications within aerospace, utilities, cable or machine manufacturers or where a cooling curve is required to plot peak resistance. Sealed in an IP67 case, it is ruggedly constructed to ensure durability. This micro ohmmeter has a display length of 60,000 counts and auto averaging of forward and reverse measurement removes thermal emf differences. The DO7Plus micro ohmmeter has built in rechargeable batteries which will provide up to 1 hour of continuous use at 10A, and up to 20 hours at all other ranges. The data log memory using FRAM technology offers unlimited read/write cycles and over 10 years of data retention, without relying on internal batteries.

    DO7 Plus Micro Ohmmeter - Features

    • Backlit LCD graphic panel with programmable timer for battery conservation
    • Qwerty Keyboard
    • Temperature compensation via PT100
    • Coefficients for Copper and Aluminum
    • Display length of 60,000 counts
    • Auto Averaging with a forward reverse measurement (removes thermal emf diff)
    • Log Memory can be plotted to calculate peak resistance value at t=0
    • Memory 1000 time stamped readings
    • Software included to view data via download with USB, RS232
    • Ruggedly constructed case IP 67 when lid is closed a d IP53 when lid is open.
    • On-screen, real-time graphical plotting cooling curve facilities with peak resistance value calculator
    • Reading rate of 2 readings per second
    • Measuring ranges from 6mΩ - 6kΩ
    • Resolution 100nΩ on 6mΩ range
    • Single pulse measurement for fast resistance tests
    • Continuous measurement current for inductive tests
    • Full test lead continuity testing and diagnostic display
    • Multilingual - display available in English, French, German, Spanish or Italian

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