GB/T 3048.7—2008 Electric Cables and Wires Tracking Resistance Testing Equipment

Scope:

Test the ability of wires and cables to withstand damage caused by electrical traces caused by surface leakage in filthy conditions.

Standard :

Testing apparatus for GB/T 3048.7—2008,GB14049-2008.

Specification:

Test sprinkler:

- three positions, independent stainless steel nozzle, nozzle hole: 16, aperture: 0.5mm;

Test liquid:

- 1L sodium chloride water (about 0.2%) Surfactant 0.1% Para-octyl phenyl polyoxylene  (distribution of a bottle)

liquid conductivity:

- (3000-400) uS/ cm, Conductivity meter for customer's own use, conductivity meter measurement

Spray pressure:

- vacuum pump pressure control, constant pressure adjustable;

Spray stroke:

- ≥ 1m;

Spray height:

- 600mm ±10mm adjustable;

Spraying speed:

- (3±0.01) m/ s;

Spray flow rate:

- (0.5±0.1) mm/ min. within 2 seconds

Spray cycle:

- 30 seconds; spray 10s; intermittent 20s

Sample base height:

- 100 mm±5 mm; angle: 45

Observation window:

- explosion-proof toughened glass, size:580 mm * 380 mm

Test exhaust:

- equipped with automatic exhaust system, wind speed: 0.2m / s

Shape size:

- 1120mm × 650mm × 1350mm

Test power supply:

- 220V / 50-60Hz

Applied voltage:

- power frequency test high voltage 0 ~ 5kV ±5% (continuously adjustable);

Voltage and current measuring instruments:

- accuracy≥1.0;Measured value error≤±3%;