Beijing Beiguang precision instrument and Equipment Co., Ltd. all products in strict accordance with the national standard production （can show the level of quality, impeccable quality certificate）.

This product: tracking, tracking, comparative tracking index, resistance testing instrument tracking index.

Model: BDH click on the link to enter the North precision instrument equipment Co., Ltd.

Tracking instrument is introduced: （the instrument in full compliance with GB/T4207, GB4706.1 ASTM D: 3638-92, IEC60112, UL746A,）

A, technical indicators:

1, air environment: 0~40 ° C;

2, the relative humidity: ≤ 80%;

3, no obvious vibration and places of corrosive gas;

4, the working voltage: AC220V ± 50HZ 2% ± 1%, 1KVA;

5, the test voltage: 100~600V continuous adjustable digital display, voltage meter display value of the maximum error: 1.5%, shows the value: r.m.s;

6, a time delay circuit: test loop in （0.5 ± 10%） A （r.m.s） or more current delay （2 ± 10%） S after action;

Electrode:

A: 5 mm x 2 mm Rectangular platinum electrode and the brass electrode of each of the;

The b: electrode with IEC60112 B.1 size requirements: （5 ± 0.1） mm × （2 ± 0.1） mm × （≥ 12） mm, wherein one end of chisel edge angle

（30 ± 2） ° （i.e. test end is 30 °± 2 ° angle）, Chisel Tip plane width of 0.01 mm ~0.1 mm;

C: between the electrodes and the angle of 60 ° ± 5 °, spacing of （4 ± 0.1 ㎜）;

The d: of sample pressure: 1.00N ± 0.05N;

7, dropping liquid system:

A: （30 ± 5） seconds （open drop time 28S+ open drop duration of automatic counting, digital display （2S） can be preset）, 50 drops

Between: （24.5 ± 2） min;

B: drops the needle nozzle to the surface of the sample height: 35 mm ± 5 ㎜ （a gauge for measuring reference）;

C: drop weight: 20 drops 50 drops of 0.997g~1.147g:: 0.380g~0.489g;

8, the short circuit current: two electrode short-circuit current can be adjusted to （1 ± 0.1） A, digital ± 1%, current meter display value of effective value （r.m.s）;

9, the instrument dimensions （w * * Deep） 1100*1150*550 mm （0.5 cubic meters）;

700*385*1000 mm （0.1 cubic meters）;

10, the tank is made of 304 stainless steel plate with 1.2 mm thick, can produce 0.75 cubic;

11, the sample support plate thickness of 4 mm glass;

12, the needle nozzle diameter: A solution: 0.9 mm ~1.2 mm

The B solution: 0.9 mm ~3.45 mm

13, the droplet size depending on the drip system;

14, wind speed: 0.2M/S.

Two, parameters:

1 power: AC220V ± 5[%], 50HZ ± 1[%], 1KVA;

2 the test voltage: 100~600V continuous adjustable digital display;

The 3 delay circuit: test loop in 0.5A or more current delay 2 seconds after the action;

The 4 electrode: 5mmX2mm rectangular platinum electrode and a pair of brass materials, pressure each electrode of specimen can be adjusted （1N ± 0.05N）;

5 two electrode distance of 4 ± 0.1mm;

6 drops of liquid interval: 30 ± 5 seconds （open drop time 28S+ open drop duration of automatic counting, digital display （2S） can be preset）;

7 short-circuit current: two electrode short-circuit current can be adjusted to 1 ± 0.1A ± 1[%], digital display;

Three, characteristics:

CTI is the judgment of insulating material comparative tracking index, meet the DIN standard EN60112. CTI simulation of track insulation material through the current between two electrodes of the drops. Insulating materials commonly used may be exposed to humid or dusty environment, if the conduction case, risk may cause a weight or fire. This part to meet the DIN EN 60112 / IEC 60112 / VDE 0303 part. KA method for testing the meet （number / dripping the creeper channel depth） and KA （voltage until fiftieth drops of liquid）. CTI and PTI will be able to identify. The number of combination allows fine-tuning test voltage, test current, switching time, drop size and drop.

Volume 8 cubic box: 0.1, 0.5 cubic meters, 0.75 cubic.

Four, use:

Used for lighting equipment, low-voltage electrical appliances, household electrical appliances, electrical tools, electric motor, electric tools, electronic instruments, electrical instruments, information technology equipment research, production and quality inspection departments, is also applicable to insulation materials, engineering plastics, electrical connectors, accessories industry, simulation test.

Five, test principle:

Tracking test is in solid insulating materials on the surface, within the specified size （2mm * 5mm） between the platinum electrode, and applied a voltage and timing （30s） constant height （35mm） regulations conductive liquid droplet volume drop （0.1%NH 4CL）, to evaluate the solid insulating materials on the surface of the electric field and wet or combined effects of pollution medium electric properties, determination of the comparative tracking index （CT1） and resistance index （PT1）.

Six, the matters needing attention:

1, tracking test instrument in the process of operation, personnel should pay attention to personal protection, avoid leakage injury or solution contamination to the mouth, eye damage, input power of 2 AC220 ± 2%.

3, the exhaust pipe should be turned out of the window.

In 4, the samples were, do not open the door, after the test is finished or when the fire smoke test failure, first open the fan out of the smoke, then open the door.

5, before the experiment to confirm whether the equipment in the measurement period, such as prolonged cannot experiment

6, the power use three-pole socket wire, ensure reliable grounding.