Homepage | Set Home | Add to Favorites

Shenzhen Bonad Instrument Co.,Ltd

  • No Category

Friends links

Proof and Comparative Tracking Index Tester
Click image to view full size image
Product: Views:107Proof and Comparative Tracking Index Tester 
Unit price: Negotiable
Delivery date: Since the payment date Days delivery
Valid until: Long-term effective
Last updated: 2018-05-19 01:42

Proof And Comparative Tracking Index Tester

(Model# BND-LD)


Tracking Index Text Apparatus BND-LD creates moist conditions by providing drops between electrodes to measure the electrical breakdown(tracking) properties of an insulating material .

Tracking is an electrical breakdown on the surface of an insulating material. A large voltage difference gradually creates a conductive leakage path across the surface of the material by forming a carbonized track.

The Comparative Tracking Index or CTI is used to measure the electrical breakdown (tracking) properties of an insulating material.

To measure the tracking, 50 drops of 0.1% ammonium chloride solution are dropped on the material, and the voltage measured for a 3 mm thickness is considered representative of the material performance. Also term PTI (Proof Tracking Index) is used: it means voltage at which during testing on five samples the samples pass the test with no failures.



IEC 60112:2003 Method for the determination of the proof and the comparative tracking indices of solid insulating materials



Comparative Tracking Index Tester is widely used for electrical safety assessment of electrical apparatus. This machine mainly tests the resistance tacking performance of  solid insulating materials, which may be exposed to moisture and dirty environment.


automation control systems; digital display.

Instruction:The Proof And Comparative Tracking Index Tester is a fully automatic instrument contained in its own cabinet to maximize the safety of the operator. Inside the well lit cabinet, a test specimen is placed on a glass plate and two platinum electrodes are lowered onto the top surface. A gauge block is supplied with the instrument to ensure the electrodes have the proper distance between them. The table height is easily adjustable to ensure the proper angle of the electrodes and height of drops. The rest of the test is controlled from outside the test chamber with the door closed. The voltage, limiting current, drip rate and number of drips are all set on the control panel. An operator should observe the test to see if a flame ignites. The instrument sounds an alarm if there is a tracking failure of at least two seconds.    


the electrode material

rectangular electrode - platinum metal

the electrode pressure

1.0 ± 0.05N

the distance between   electrodes

4.0mm ± 0.01mm, angle 60 °± 5

the electrode voltage

100 ~ 600V (48 ~ 60HZ) adjustable short-circuit current 1.0 ± 0.1A, voltage drop is less than 10%

drops of liquid height

30 ~ 40mm adjustable

the size of the drops

44 to 55 drops / 1cm3 Adjustable

drops Time

30s ± 5s,

the number of drops

0 to 9999 times   adjustable

the leakage judge

loop current greater than 0.5A and maintain the 2 seconds the relay to cut off the current, indicating that the sample failed

the test process

automatic control of test procedures, independent ventilation

reference standards

IEC60112 ,IEC60745, IEC60335-1, IEC60598-1

the studio volume

0.5 cubic

outer dimensions

1000mm wide x 650mm deep x 1300mm high

Product Show


2.What’s the shipping way?
Via air , sea or express like DHL, UPC, TNT, FedEx and so on.

3.What’s your after-sales service policy?
One year warranty and life long tech support.

4.Can I book a factory tour?

Yes. Please contact us to arrange it.

5.What’s your working hours?

8:30~12:00  13:30~18:00 (from Monday to Friday)