Tracking Index Test Machine from SCR ELEKTRONIKS is a popular product for checking compliance of solid insulating material as per IEC 60112, UL 746A, ASTM D3638 and DIN 53480. With a high voltage applied between two platinum electrodes, the solid insulating part is placed such that there is a 4mm gap between the electrodes touching the insulating material under test. The high voltage is settable up to 600V or 1200V depending on model. Drops of contaminant are poured on to the electrodes while voltage is applied. With time, it’s evaluated on the criteria outlined in IEC 60112 or the equivalent national standard with which the insulating material is required to comply with. The tracking index test provides an accelerated simulation of conditions of surface discharges and possible resulting tracking and failure in equipment using insulating materials. This test also provides a means to compare insulating materials performances under wet and contaminated conditions. This test apparatus is covered in IEC 60112 and commonly referred for various devices in many standards such as IEC 60335 - 1, IEC 61058 - 1 , IEC 60065, IEC 60669 - 1, IEC 60884 - 1, IEC 60950 - 1, IEC 61010 - 1 , IEC 60598 - 1,IEC 60320 - 1 IEC 60898 - 1, IEC 60400, IEC 60238, IEC 60730 - 1, UL746A , ASTM D3638 and DIN53480.

The Comparative Tracking Index Tester is used in determination of the comparative tracking indices of solid insulating materials as per IEC 60112 2003-01. This test is to determine the resistance to tracking in insulating parts supporting live parts used for electrical accessories such as MCBs, switches, sockets, plugs, starter holders, connectors etc. The CTIT-01 indicates the relative behavior of solid electrical insulating material with regard to their susceptibility to surface tracking when exposed, under electric stress, to water and other environmental contaminants. This test also referred in many other standards such as IS 2824 – 1975, IEC 60335.

PLC Based Comparative Tracking Index Tester (platinum electrodes) – 1200V

Salient Features:

1. Built in electrolyte container with pump, producing drops of 20 + 3mm³ volume at precise interval of 30 seconds. The drop falling height is adjustable to 35 mm.2. 

2. Priming facility for the pump to enable removal of initial electrolyte having higher concentration.

3. Fully automatic unit with minimum of controls & adjustments.

4. PLC Based (Siemens make Logo PLC) control unit used to set the timing and to control the sequence of operations.

5. Preset load on the electrodes with a force of 1.0 N each.

6. Current limiting resistances automatically selected with test voltage

7. Adjustable platform with glass top for placing the sample.

8. Clear acrylic front cover for safety and a draught free surrounding

9. Door Interlock switch for test chamber. Test will be put OFF if the chamber door is open

10. Exhaust fans for removal fumes

Specifications :

1. Input Supply : 230 V AC , 50/60 Hz

2. Adjustable test voltage 0 V to 1200 V AC with steps of, 0-200V, 0-400V,0-600V, 0-800V, 0-1000V, 0-1200V

3. Digital voltmeter – 3 & 1/2 Digit to indicate test voltage 0 V to 1200 V.

4. Digital Ammeter - 3 1/2 Digit to indicate current. 0 to 1.999A .

5. Electrode Material : Platinum

6. Electrolyte : 0.1 % NH4CL (Ammonium Chloride) in distilled Water

7. Adjustable drop volume : 20 ±5 mm3 (+3)

8. Drop fall height : 35 mm (=<40 mm )

9. Drop interval :1 to 99 sec (preset at 30±3 sec)

10. Preset load on the electrodes, exerting a force of 1.0N each.

11. Tripping current preset at 0.5 Amps. With 2 sec lag, and short circuit current limit setting at 1Amps.

12.Short circuit release – 0.5 A for 2 Sec; Short circuit current is limited to 1A