Vertical Flammability Chamber

UL444 Vertical Combustion Chamber for Wire Cable Flammability Test

Compliance with the standard:

Strictly according to UL1581 sect 1080.1 ~ 1080.14 standard production, and approved by Guangzhou Meihua UL company, in line with VW-1 (V-ertical-specimen) Flame Test burning test standards. It applies to VW-1 of UL1581.UL13.UL444.UL1655 and FT-1, FT-2 test standard requirements of CSA. It is economical and widely used by the wire and cable industry.

Test method: Adjust the flame height, place the top of the flame under the test piece, burn for 15 seconds, extinguish for 15 seconds, check the test piece burned after 5 times, set the burning time, extinguishing time and repetition number, and automatically operating.

Parameter details: The entire test was performed in a sealed laboratory with a volume of 4.32 cubic meters.

Combustion chamber:

1. Effective space: 2.4m (length) * 1m (width) * 1.8m (height)

2. Dimensions: 2.4m (Length) * 1m (W) * 2.5m (H)

3. Material:

External: Square steel frame structure, thickened 1.5mm steel plate for electric baking dark green paint;

Internal: Electrostatic black paint.

4. Observation window:

Two push-pull windows are left and right; the observation window is tempered glass;

Surrounded with SUS304 stainless steel;

Size: 730mm (height) * 420mm (width).

5. Operation window: a total of 4

Inner space size: ф150mm;

Peripheral: 3.0mm stainless steel edging;

Sealed for long arm leather gloves, length: 600mm;

Total peripheral size: ф220mm.

6. Exhaust system:

Two spiral exhaust fans;

The sealing push-pull plate is 2.0mm stainless steel;

There are slide grooves on both sides;

A set of remote control devices: a. Using steel puller type b. Two sets of pulleys

7, air inlet: a total of 4

Size: ф160mm;

The sealing push-pull plate is 2.0mm stainless steel plate;

There are sliding slots on both sides.

8. Bottom holder:

Size: 2.4m (length) * 1m (width) * 0.7m (high);

Using 60mm*60mm*4mm angle iron, electrostatically baked dark green paint;

Foot pulleys: six of which have 4 lock pulleys.

9. Lighting equipment: A fog-proof smoke round light

Control part:

1. Burning instructions 1

2. Burn setting: 0-99.99 seconds arbitrarily set

3. 1 stop indication

4. Stop setting: 0-99.99 seconds set arbitrarily

5. Burning count: 0-999999 times arbitrarily set

6. With automatic, combustion, stop burning, counting function

7. With vertical / horizontal conversion

8. With automatic ignition function

9. With manual/automatic conversion

10. Ignition is high pressure ignition

11. The test part is connected with the control and the air plug is used. The contact is very tight.

Test part:

1. Nozzle:

1. The angle is 20 degrees

2. Inner flame control valve 1

3. Outer flame control valve 1

4. Inner flame contact point marking rule 1

5. Low flag marking rule 1

6. Test length rule 1

7. Flame measuring device 1

8. Test Fixture: a. Material: After the steel plate is processed and painted b. Color: Pure black

9. The test box is made of SUS304 stainless steel

10. The bottom of the test frame: a. 2.0mm steel plate b. Size: 700mm (length) × 450mm (width) c. Color: black paint for electrostatic baking

11. Vertical and horizontal test independent design

12. Test box plus long arm push rod

13. Horizontal burning flag is 3

Fourth, gas source control:

1. Gas: Methane is recommended (user-supplied)

2. Flowmeter: 1 (US Dwyer VA20430 type)

3. U-tube pressure gauge: 1 (US Dwyer Corporation Model 1230-36)

4. Gas Tee One

5. Trachea: high pressure air tube