• 10/4 channels in one design
• 10 sets of sync output and measurement
• AC/DC/IR 3 in 1 EST test
• Master/Slave link – 10 units max.
• Flashover detection
• 1MΩ~50GΩ insulation resistance test

High Efficiency Hipot Test Solution

Hipot test is one of the major test items in electrical safety test. All electrical components and products including transformers, capacitors, power supplies, chargers and home appliances all require Hipot test.

With more than 25 years of experience in developing the instruments for test and measurement, Chroma creates the 19020 multi- channel Hipot tester with a brand new architecture. It can measure the Hipot leakage current of all channels at the same time and conduct tests on 100 DUTs maximum simultaneously.

There is no need to purchase various Hipot testers to save the production line space. Its one time multi-channel test can increase the efficiency of electrical regulatory test. It improves the productivity and reduces the risk of test for the products that require Hipot test only.

Chroma 19020 also has powerful functions in Flashover detection and Open/Short Check. It contains several international patents and is the best tool for electrical regulatory Hipot test as not only reliable quality can be obtained, but highly efficient test platform can also be created.

World's First Sync Hipot Test

(Patent Registered)

Chroma 19020 has equipped with the world's first sync Hipot test function that one single unit can perform 10 channels sync output and measurements simultaneously. Maximum 10 units (master & slave) can be controlled to have 100 channels in total. They can be grouped for output to avoid creating voltage difference due to adjacent tests as well as to improve the productivity.

Applications

Chroma 19020 can be applied to various electrical products for time consuming tests such as quality assurance sampling test and production line test.

• Power cord
• Capacitor
• Resistance
• Switch
• Connector
• Transformer
• Charger
• Adapter

FLASHOVER DETECTION

Same as other Chroma EST Series, 19020 has Flashover detection function. Flashover is the electrical discharge generated by high electric field inside or on the surface of insulation material that makes the DUT to lose its insulation characteristic and form a transient or discontinuous discharge. It can cause a carbonized conductive path or damage the product under test. Flashover cannot be detected by monitoring leakage current only. The change rates of test voltage or leakage current are monitored to detect flashover as its detection is one of the most indispensable test items for electrical safety test.

OPEN / SHORT CHECK (OSC)

OSC function can check if there is any Open (bad connection) or Short (DUT short circuited) occurred during test. If a DUT is open circuit during test, the unit might be misjudged as a good one. If a DUT has short circuit, OSC function can filter it out to diminish the damage to fixture and save the test cost.

In general, products under Hi-pot test have capacitance (C X ). C X could be tens of pF to several µF in normal condition. When the circuit connection is interrupted, a small capacitance (Cc in Figure 6) will be formed on the broken interface that is usually lower than 10pF. It makes the entire capacitance of the product lower than normal value. The capacitance of a product may be higher than normal when the product is short-circuited or near short circuit. Thus the high/low limit of capacitance variation can be used to identify the short circuit problem.

APPLICATION

Chroma 19020 can be applied to test various electrical parts and products. The multi-channel Hipot tester can test multiple DUTs at once. The applications include:

• Automation of power cord and related cable material
• Automation of capacitor and resistance
• Insulation test of switch and connector
• One time test for transformer with multiple pins or multiple units
• Production planning for charger and adapter

With 190201 3-CH scanner, 19020 can finish 3 Hipot tests at once. Taking a two winding transformer as an example, the following three Hipot tests can be done at one time within a DUT loading time.

• Primary to Secondary Hipot test.
• Primary to Core Hipot test
• Secondary to Core Hipot test.

This application can be applied to transformer, power adapter, common mode choke and so forth.

For different test solutions, Chroma has accessories and fixtures available for use. Please contact local service for further information.

• Power Switch
• LCD Display
• Function Keys
• Cursor and Enter Keys
• PASS/FAIL LED Indicator
• Danger LED indicator
• Test Key
• Main Index
• System Key
• STOP Key
• START Key
• GPIB Interface (optional)
• RS232 Interface
• Internal Communication Interface
• Master/Slave selector
• Interlock
• Handler Interface
• Internal Control Interface
• Fuse and Earth Terminal
• AC Input
• HV Output Module
• High Voltage Terminal
• Return/Low Terminal