Operation Manual for Horizontal and Vertical Combustion Tester

I. Overview

This experimental equipment complies withANSI/UL94TheIEC60950-1TheGB5169.16-2017Standard requirements; Used for conducting horizontal and vertical flammability tests on plastic components of electrical equipment and appliances. The outer shell of the product box is made of steel structure and equipped with a transparent observation window. The digital timer records the flame application, residual flame, and residual burning time. This device has a beautiful appearance, is easy to use, and has reliable performance.

■ IITechnical Specifications

Working power supply: 220V AC 50HZ

Flame application time: 0～999.9S(Adjustable)

Remaining Flame Time: 0～999.9S(Adjustable)

Remaining burning time: 0～999.9S(Adjustable)

Combustion angle: 0°20°45° selectable

Flame height: 20mm±1mm

Gas flow rate: 100~200ml/Min

Gas pressure: 0~1 Mpa Differential pressure gauge ±200mmwater column

Combustion lamp: Inner diameter of lamp tube9.5±0.3mm,Length:100mm±10mm

Time device: Can be precise to0．5S.

Length measurement: millimeter

cotton Cloth: 100%Absorbent cotton fabric

Pressure gauge: Can measure200mmThe water, to5mmFor increments

Flow meter: Maximum measurement ±2%accuracy

Position adjustment: The sample holder bracket can be adjusted up and down, left and right, and the combustion seat can be adjusted back and forth.

Gas supply for combustion lamp: see the following figure

■ IIIexperimentenvironment

1. Operating Environment Requirements:temperature23±5℃ humidity60±5%..

two﹑This instrument needs to be installed and positioned horizontally.

■ 4Operating Specifications

Instrument Description:

Flame size control flowmeter

Gas interface

Power switch and emergency stop button

Operation display screen

1. Preparation matters:

1. Connect the external gas cylinder to the equipment using an explosion-proof hose to ensure that there is no gas leakage at the interface.

2. Adjust the pressure reducing valve of the gas cylinder to achieve an output gas pressure of0.1MPa(Remember not to put too much pressure)

3. Turn on the device power. After power on self-test, enter the following image1shown

image1

two.operation stepssuddenly

1.Horizontal combustion experiment

Sample taking:

1)Flake: cutting, melting, extrusion and other methods are available, with smooth edges, clean surface, and uniform density

2)Size: Long×Width:125±5mm× 13.0±0.5mmThe minimum thickness sample for testing needs to be provided3mm(-0.0, 0.2)Thickness sample, if the minimum thickness of the sample is greater than3mmOr the maximum thickness is less than3mm, then there is no need to provide it3mmsample;The maximum thickness of the sample shall not exceed13mmThe maximum width shall not exceed13.5mmThe corner radius is not greater than1.3mm

3)Series: If there are multiple models of color, density, etc., representative samples should be provided accordingly

4)Quantity: Minimum sample size2 Set, each set3 Sample pieces

Operation steps:

Experimental method：

Click on the main screen on the screen. clickSwitch to horizontal combustion,Enter as shown in the picture2shown

image2

1)Draw a line on the sample:25±1mm，100±1mm

2)Clamping: clamping close to100mmAt the end of the sample, the length direction remains horizontal, and the width direction is aligned with the horizontal plane45°±2°The wire mesh is fixed under the sample10±1mmplace

3)Tilt the blowtorch45Adjust the distance between the spray gun and the sample on the manual screen, as shown in the figure3As shown, set the speed, adjust the position of the spray gun and sample, and then click, and then return.

image3

4)Click on manual mode to switch to automatic mode, then click on the gas switch on the screen and press ignition. When the gas is turned on for a long time without testing, there may be a phenomenon of ignition failure, mainly because there is air in the trachea and you need to wait3-5STime gas exhausts the air inside the pipe. Adjust each valve to increase the flame height20±2mmThe back pressure is less than10mmwater column

5）After waiting for the flame to stabilize,

The flame burns until25±1mmPress the "residual flame" button to start timing, and when the flame goes out or burns until100mmPress the second button of the residual flame to record the time taken to stop combustion and the length of combustion.

7)calculation:V=60L/t，VIt's the combustion rate(mm/min)，LIt is the length that has been burned(mm)，tIt's the burning time(s)

Test record:

1)Is the flame burning until25±1mmor100±1mmplace

2)The flame burns until25±1mmand100±1mmBetween them, record the length burned(L)And the time taken to burn this length(t)

3)If the flame burns through100±1mm, then record from25±1mmGet here100±1mmTime spent on the premises

4)Calculated combustion rate

HBAssessment of flame level:

1)span75mmUpper thickness3.0~13mmThe sample, combustion rate≤40 mm/min

2)span75mmUpper thickness<3.0The sample, combustion rate≤75 mm/min

3)in100mmPreviously stopped burning

The samples that meet the above conditions areHBlevel

Explanation:① 3±0.2mmIf the sample can pass the flame test, then this conclusion applies to thicknesses in1.5~3mmAll samples between them;②At least samples are required2 Set, each set3 If only one sample in the first set fails, the second set of samples can be used for retesting.

VGrade fire testVerticalBurning Test, V-0 / V-1 / V-2

）

Sample collection1)

Flake: cutting, melting, extrusion and other methods are available, with smooth edges, clean surface, and uniform density2)Size: Long×125Width:±5mm 13.0×±0.5mmThe minimum and maximum thickness samples for testing need to be provided; The maximum thickness of the sample shall not exceed13mmIf the results obtained from testing the minimum thickness sample and the maximum thickness sample are inconsistent, an intermediate size sample must also be provided, with a thickness span of no more than3.2mmThe corner radius is not greater than

1.3mm3)

Series: If there are multiple models of color, density, etc., representative samples should be provided accordingly4)2 Quantity: Minimum sample size5 Set, each set

Sample pieces

Sample pretreatment:1) 23±2C50，±5%RH，

48 Hoursmin.702)Air exchange furnace,±1C，4 168 Hours

Put it back into a dryer and cool it at least at room temperature

hourExperimental method2)Clamping: Clamp in from the top3006mmThe length direction is downward, and the lower end of the sample is kept away from the upper surface of the pre-set cotton layer±10mmDistance,100%Pure cotton, weight0.08g, size50mm×50mm

3The maximum thickness shall not exceed6mm45）

4Place the blowtorch horizontally. If there is a solution dripping from the sample during combustion, consider tilting the blowtorchDegree.45）3Tilt the blowtorchAdjust the distance between the spray gun and the sample on the manual screen, as shown in the figureAs shown, set the speed, adjust the position of the spray gun and sample, and then click4

, and then return4

As shown in the pictureimage4)Click on manual mode to switch to automatic mode, then click on the gas switch on the screen and press ignition. When the gas is turned on for a long time without testing, there may be a phenomenon of ignition failure, mainly because there is air in the trachea and you need to wait203-5STime gas exhausts the air inside the pipe. Adjust each valve to increase the flame height±2mmThe back pressure is less than

510mm

water column

）After waiting for the flame to stabilize, click to start the blowtorch and it will automatically reach below the sample to start burning and calculate the burning time.1.Test Record 2.record 3.First combustion time 4.Second combustion time 5.Yu Yan for a moment

Yu Yan Second Time

Yu Zhuo TimeRecord the entire experimental process. Click the reset button in the bottom right corner to delete the last test record danger : A When using different gases, the pressure of the gas varies, which affects the ignition effect. At this time, it is necessary to adjust the control amount of the pressure regulating valve under the combustion seat, and adjust it in conjunction with the gas flow control switch and air conditioning device to obtain a standard flame. BThis device must have a reliable electrical grounding circuit protection.

CThe trachea of the machine must be inspected after one year to avoid aging, air leakage, and injury to others. If there is no replacement, the consequences of the accident shall be borne by oneself.

III. Result judgment.