10KV, 25KV & 50 KV DC Hi-Pot Tester

Model 3010HP, 3025HP & 3050HPThe latest DC Hi-Pot tester provides a cost-effective solution to perform Hi-Pot testing of cables, generators, motors & other electrical products.

JABBALS

The DC Hi-Pot test is extremely important to identify the deterioration in the insulation as early as possible to take corrective measures.

Hi-pot Tester for Electrical Safety

The latest 3000 series DC Hi-Pot tester is highly reliable, accurate and rugged tool to

check the quality of dielectric strength of the insulation.

Applications

The DC Hi-Pot test is an important part and parcel of the electrical safety tests

mandated by standards organization world-wide. More than 80 per cent of faults in

electrical and electronic systems are due to weak insulation caused by environmental

factors such as dirt, grease, temperature stress, humidity, etc that affect the dielectric

strength of the insulation material.

The DC Hi-Pot testers are most commonly used to test the following:-

• Transformers • Switchgear & Relays

• Motors • Coils & Chokes

• Generators • Capacitors

• Wires & Cables • Other electrical apparatus

JABBALSPlot No. 20A/14-15 Industrial Area, N.I.T Faridabad -121001, INDIAPhone: +91 129 4021189, 4021190 • FAX: +91 129 2233295Email: jabbals2000@yahoo.com • Web: www.jabbals.com

Principle of DC Hi-Pot Test

The DC Hi-Pot test is extremely important to identify the deterioration in the insulation as early as possible to take corrective measures. The high potential is applied between isolated parts of a circuit or a product, the behaviour of electrical parameters such as Leakage current helps identify broken or poor insulation, stray wire strands or braided shielding, spacing problem between terminals, tolerance errors, etc.

During the Hi-Pot test, a high voltage is applied to the device under test (DUT) that causes a small leakage current (microamperes) to flow from the conductor and insulation. This small leakage current depends on three main factors i.e. (i) test voltage (ii) system capacitance and (iii) temperature of the material

The leakage current is also a combination of three sub-currents :

I) Conductive leakage current. Conductive current is a small current that normally flows through insulation, between conductors or from a conductor to ground. This current increases as insulation deteriorates and becomes predominant after the absorption current vanishes.

II) Capacitive charging leakage current. When two or more conductors are run together in a raceway, these act as a capacitor. Due to this capacitive effect, a leakage current flows through conductor insulation.

III) Polarisation absorption leakage current. Absorption current is caused by polarisation of molecules within the dielectric material.

The Hi-pot test therefore helps in making informed decision on the safety and quality of electrical circuits and eliminates the possibility of having a life-threatening short-circuit or short-to-ground faults.

Benefits

User friendly front panel controls

High fault detection capability

Non-destructive to insulation

Zero start lock for operator safety

Insulated Test Probe to allow easy application of the high voltage to the device under the test

Shielded output test leads

Test leads energized warning indicator

Auto/Manual test mode option for the user

Adjustable test time in the Auto mode

Continuously adjustable output test voltage

Accurate 3½ Digits LED Display for DC Hi-Pot test voltage and Leakage current

Go/No-Go Leakage current trip indicator and buzzer

Max Output Voltage 10,000V 25,000V 50,000V Max Leakage Current 2000 μA 2000 μA 2000 μA Max Trip Current 2000 μA 2000 μA 2000 μA Display 3½ Digits LED Display 3½ Digits LED Display 3½ Digits LED Display

Max Test Time 180 secs 180 secs 180 secs

Operating Voltage 230V ± 10% 230V ± 10% 230V ± 10%

Operating Frequency 50Hz ± 3% 50Hz ± 3% 50Hz ± 3%

Power Consumption 120W 300W 440W

Weight 50lbs 70lbs 80lbs

Physical Dimensions (W X H X D) 380 X 210 X 485 (mm) 435 X 250 X 540 (mm) 475 X 320 X 570 (mm)

Test Specifications 3010HP 3025HP 3050HP