KTC positive pressure explosion-proof instrument distribution panel cabinet boxDetailed product description：

KTC positive pressure explosion-proof instrument distribution panel cabinet box (IIB, IIC) applicable scope
1. Explosive gas environment: Zone 1, Zone 2
2. Dangerous gases or vapors in the workplace: IIA, IIB, IIC
3. Temperature group: T1~T4
4. Environmental temperature: -20 ℃ to+40 ℃
5. Indoor and outdoor)

KTC positive pressure explosion-proof instrument distribution panel cabinet box (IIB, IIC) model meaning Type design

Main technical parameters
1. Explosion proof mark: Expdem II BT4 Expdem II CT6 2, protection level IP54 (up to IP56)
3. Secondary (cabinet) power supply 220VAC ± 10%, 50-60HZ, 10A
4. Input gas source: 0.4-0.8MPa, purified air or nitrogen and other protective gases
5. The air inlet is G1/2 6, and the air exchange rate is 10-20m3/h
7. Ventilation time: 10-30 minutes (determined by the explosion-proof testing unit, tp=5 × V/Q, tp: ventilation time, V: net capacity of the main chamber, Q: flow rate of protective gas)
8. The gas consumption is 2-8m3/h (depending on the volume of the panel and cabinet, the number of panel operating components, and their sealing degree)
9. Functional indicators:
a) Before supplying power to instruments and electrical appliances, press the start button to automatically ventilate the remaining air in the panel and cabinet. After the ventilation is completed, the positive pressure value will be automatically maintained at 250Pa ± 100Pa, and power can be supplied to the instruments and electrical appliances in the panel and cabinet
b) The working positive pressure value inside the panel and cabinet is 250Pa ± 100Pa
c) When the internal positive pressure value is less than 150Pa, it automatically replenishes air
d) When the internal positive pressure value is less than 80Pa, an automatic sound and light alarm will be triggered
e) When the internal positive pressure value is less than 50Pa, the power supply will be automatically cut off (please specify if this function is required for use in Zone 2 hazardous areas)

Table 1

structural form	Explanation
two hundred and twenty-one	Door opened in rear
two hundred and twenty-two	Door opened in front
two hundred and twenty-three	Door opened in front and rear
one hundred and twenty-one	Door opened in left and rear
two hundred and eleven	Door opened in right and rear
one hundred and twenty-two	Door opened in left and front
two hundred and twelve	Door opened in right and front

Outline dimensions and schematic diagram

H	B	D	Observation window size
one thousand and eight hundred two thousand two thousand and two hundred (2300)	six hundred eight hundred (900) one thousand one thousand and two hundred	six hundred eight hundred (900) one thousand	b=B-200 h: Prepare according to requirements

H	B	D	Observation window size
one thousand and three hundred	six hundred six hundred and sixty eight hundred one thousand	one thousand and three hundred	seven hundred

H	B	D	Observation window size
one thousand and eight hundred two thousand two thousand and two hundred (2300)	six hundred eight hundred (900) one thousand one thousand and two hundred	six hundred eight hundred (900) one thousand	b=B-200 h: Prepare according to requirements

KTC positive pressure explosion-proof instrument distribution panel cabinet box (IIB, IIC)