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Exploring Guardian Hipot Analyzer

Guardian Hipot Analyzer

Chroma 19055

Designed for hipot tests and analysis of transformers, motors and other electronic components

Hipot Test: Output Voltage

AC: 0.05~5kV
DC: 0.05~6kV

Hipot Test: Cutoff Current

AC: 5kV/100mA (4kV/120mA)
DC: 25mA

Insulation Resistance Test

0.1MΩ~50GΩ / 5kV max

Hipot or dielectric withstand testing instruments manufactured by Chroma are used for conducting electrical safety tests on electrical components and products to make certain they are in compliance with IEC, UL, TUV, CSA, EN and other electrical safety requirements. In addition, these instruments are designed for general product or component testing as well as complex medical safety testing (60601-1) ensuring human safety and product reliability.

Discharge Level Analysis


The dielectric withstanding voltage of components depends on materials and the manufacturing processes. For improving insulation in components, discharge levels should be defined including Corona discharge, Flashover and Breakdown. The Guardian 19055 is equipped with a Discharge Level Analysis mode (DLA) for defining the programming voltage, time, counts and limits.


The Guardian 19055 Hipot Analyzer provides discharge analysis of three levels. DLA mode will indicate the withstanding voltage depending on the different level limit beginning with Corona Discharge Start Voltage (CSV), Flashover Start Voltage (FSV), and Breakdown Voltage( BDV). R&D and QC personnel are able to improve insulation by discharge data collection and analysis.

Flashover Detection


All hipot and dielectric test equipment have the ability to detect a breakdown, and some have the ability to detect flashover (ARC), but only a few have the added ability to detect CORONA DISCHARGE. Although safety agencies have not included any requirement to measure the corona discharge in the safety test requirements, by accurately measuring the leakage current dynamically in very small levels, it is possible to determine if the unit is in one of the following conditions:


Corona Discharge: an electrical discharge brought on by the ionization of a fluid surrounding a conductor, which occurs when the potential gradient (the strength of the electric field) exceeds a certain value, but conditions are insufficient to cause complete electrical breakdown or arcing. Corona discharge may be an early symptom of an impending breakdown.


Flashover: an electrical breakdown of a gas that produces an ongoing plasma discharge, resulting from a current flowing through normally nonconductive media such as air.


Breakdown: a rapid reduction in the resistance of an electrical insulator that can lead to a spark jumping around or through the insulator. This may be a momentary event (as in an electrostatic discharge), or may lead to a continuous arc discharge if protective devices fail to interrupt the current in a high power circuit.

Model Description
Guardian 19055 Hipot Analyzer (AC/DC/IR) - 500VA
Guardian 19055-C Hipot Analyzer (AC/DC/IR/DLA/CDD) - 500VA
Accessories
A190355 19" Rack Mount Kit
A190356 GPIB Interface for Model
A190301 (1930A) 8HV Scanning Box [19055x]
A190708 ARC Verification Fixture
10541 Softpanel Kit

More Features

Programmable Voltage
and Test Limit

Flashover
Detection

Key Lock
When Fail

RS-232
& Handler Interface

Media

Webinar: Electrical Safety Testing 101

Get an overview of the basic principles of electrical safety testing.

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