Vitrek Dielectric Tester

Model: 944i

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AC & DC Hipot plus insulation resistance and earth continuity all in one GPIB automated tester.

The Vitrek 944i combines AC dielectric strength testing (AC Hipot) with DC dielectric strength testing (DC Hipot), insulation resistance (to65 Gigohms) and earth continuity measurement all in one feature-rich automated instrument. This compact dielectric analyzer lets you measure four electrical safety test parameters from a single test connection-all with the touch of a button.

The Vitrek 944i delivers top performance and versatility for manufacturing test, product safety engineering, component evaluation, as well as research and development applications. You’ll find that the multi-function 944i is loaded with features that even the larger more expensive dedicated testers don’t offer. Powerful features including-Automatic calibration, built-in diagnostics, internal “watchdog” safety monitor, user memory for up to 100 test routines, arc detection and available interface package with IEEE-488.2, RS-232 and direct test results printout capability.

The intelligent choice for operator safety

The 944i with a high-impact injection molded front-end with no exposed metal parts to present a potential user shock hazard. We put in an internal “watchdog” safety monitor which automatically shuts down the output in the event of an inadvertent disconnect. And the Vitrek 944i boasts an impressive user programmable “Arc Detection” circuit, capable of shutting down the high voltage system within microseconds.

For added peace of mind the onboard diagnositcs of the 944i execute a complete check of all safety systems every time you power up.

World Class technology means reliability you can depend on

The Vitrek 944i provides increased performance and reliability when compared to discrete testers. Extensive use of ASIC, PAL and built-in test technologies make possible this high level of functionality with far fewer components than existing instruments.

Powerful yet easy to use

We’ve harnessed the power of the microprocessor to make this dynamic instrument simple and easy to operate. Specifically, the extensive use of menu prompting walks you through the test setup. Built-in user memory allows you to store, recall and edit up to 100 different test programs. All test parameters are fully user selectable-no hidden switches or pots to hamper operation.

The result is a clean, streamlined panel design that demands noticeable less effort to operate – and the unrivaled power to execute customized test routines at the touch of a button.

Capacity to excel

With its full 35mA sourcing capability, the Vitrek 944i possesses the horsepower required to drive today’s capacitively filtered circuits – loads which the 10mA to 25mA units just can’t handle. Yet, what sets the 944i apart from the rest is its ability to discriminate between in-phase and out-of-phase leakage currents.

This advanced feature enables you to measure the resistive current associated with insulation breakdown, the reactive component or the combination of both.

Features/Benefits

• AC & DC Hipot plus Insulation Resistance and ground continuity in a single feature rich compact instrument
• AC/DC Hipot to 5VK standard, 7 and 10 KVDC optional
• Easy to use full menu prompting, walks you through the test set-up
• Test database stores 200 test steps for easy recall
• Powerful 35mA Sourcing capability
• On-board phase detection measures “total”, “real” or “imaginary” leakage current
• Continuous Output frequencies from 50 to 100Hz
• IR measurement to 65Gig ohms
• Continuity measurement to 1 milli-ohm
• Leakage current measurement to 1 nano-amp
• Optional IF-4 Interface package includes GPIB, RS232, VICL & Printer Ports
• Separate Ramp & Dwell, Min & Max current limits
• Covers-on Automatic Calibration
• Built-in controls for HV scanner and Ground Bond Tester
• CE Mark Certified to EN61010
• Includes NIST Traceable Certification
• Three year extended warranty
• Made in the USA

Specifications
AC Dielectric Mode
AC Voltage Output

Output Frequency: 50Hz to 100Hz with 1Hz resolution independent of line power frequency.
Output Waveform: Digitally synthesized, low distortion sinewave.

AC Current Sensing (AC Leakage)

Current Sensing: Resistive current (in-phase), reactive current (out-of-phase) or total current.
Voltage Coefficient: 100pA/V

DC DIELECTRIC MODE
DC Voltage Output

AC Current Sensing (AC Leakage)

Requires option *DC-7

DC Voltage Output with option DC-10
500 to 10,000 VDC 5mA 1% of output + 50V

DC Current Sensing (DC Leakage)

Voltage Coefficient: 15pA/V

HIGH RESISTANCE MODE
(Insulation Resistance)

Accuracy: Combined uncertainty of DC Voltage Output + Current Measurement Accuracy

LOW RESISTANCE MODE
(Earth Continuity)

General Specifications