
Introduction
Glow wire test is a simulation experiment project using non-flame
ignition source in accordance to standard requirements of
IEC60695-2-10,UL 746A ,GB/T5169.10,GB4706.1.It makes required
material(Ni80/Cr20) and heating wire in required
shape(Φ4mm-chromel-filament)heated up to test temperature( 550 ℃ ~
960 ℃) for 1min and then broil the specimen using required pressure
(0.95N) for 30s at vertical direction;to check whether the specimen
and bedding material ignite and lasting ignition time to test the
ignition fatalness of electrical and electronic finished devices
Test the ignition performance,ignition temperature (GWIT),solid
insulating material and other solid combustible
material,combustibility and flammability index(GWFI) .
It can be applied to research,production and quality testing
department of electrical and electronic devices and component parts
like lighting equipment,low voltage apparatus,eletrotechnical
instrument,etc.
Technical Parameter
1, glow wire temp.:100~1000℃±2℃ constantly adjustable
2, broil time:0-999.9s±0.1s adjustable (generally choose 30s)
3, ignition time:0-999.9s±0.1s,automatic record,suspension by wire
4, smother time:0-999.9s±0.1s,automatic record,suspension by wire
5, thermocouple:Φ1.0mm imported armour(K type)
6, glow wire:Φ4 mm chromel-filament(Ni80/Cr20)
7, broil into depth:7mm±0.5mm
8, specimen pressure:0.95N±0.1N
9, test speed:10 mm/s to 25 mm/s.
10, U head standard:IEC60695-2-10.
11, test procedure:automatic control,independent exhaust system
12, Reference Standard: IEC60695-2-10:2000,UL746A
13, studio volume:bigger than 0.5 cubic meter,(can be customized as
0.75 or 1cubic meter )
14, external dimension:1100mmW×700mmD×1300mm
15, control:single chip Microcomputer touch screen+button type
double control system,high accuracy temperature gauge,independent
electrical control system,strong anti-interference.
16, operation with high efficiency:One-touch operation ,fast and
highly effectively
17, standard integration:program test procedures in accordance with
actual test procedures.
Glow wire | diameter 4mm±0.07mmNi/Cr(80/20), standard |
Temp Range | 100-1000°C ±2°C continus adjustable |
Thermocouple | diameter 1.0mm Type K (Ni/Cr~Ni/Al),armored sheath can withstand temperature -40~ 1100°C |
Searing Time | 30s±0.1s (OMRON H5CN-XAN-Z digital timer, 0-9999s, presettable) |
Light-off Time | 0-999.9 s ± 0.1 s, automatic recording, manual timeout |
Fireouttime | 0-999.9 s ± 0.1 s, automatic recording, manual timeout |
Ironing into depth | 7mm ± 0.5 mm |
Sample pressure | 0.95N ± 0.1 N |
Test speed | 10 mm/s to 25 mm/s |
Control | Using single chip microcomputer + touch screen control |
Power Supply | 220V, 48-60Hz |
Consult standard | IEC60695-2-10:2013,UL746A |
Chamber | ≥0.5m |
Test procedure
Installation
* This tester should be placed on a level table
* table size no less than 1400W * 900D * (600-800)H mm
* Distance to the wall: > 200mm
* Exhaust pipe: diameter of 100mm
* The test room should be independent room equipped with exhaust system and firefighting device
1.1) install the exhaust pipe, tighten the fitting
1.2) checks the power supply wiring, ensures it’s correct and grounded
1.3) connect thermocouple as below:
1.4) connect wire control box as below
Debugging
Before debugging, please check:
2.1) turn power switch on, the sample carrier come to the left end, left proximity switch light up
2.2) adjust current to minimum, press heating button, and run, sample carrier come to right end, and come back 30s later.
2.3) test sample fixing. Fix the sample tight inside fixture, ensure 7mm spacing in the tolerance. And close the viewing window.
Test
Left: sample carrier small car go left
Right: sample carrier small car go right
Exhaust: exhausting
Light: lighting
Heating: Adjust the current, reach to required temperature. Wait 5min to let the temperature be steady.
Start: Sample carrier automatically moves forward, timers (glow time, Ti, Te) start working, carrier returns when set glow time (30s) reached.
Glow time: 30s
Ti: the duration from the beginning of tip application up to the time at which the test specimen or the wrapping tissue placed below it ignites;
Te: the duration from the beginning of tip application up to the time when flames extinguish during or after the period of application.
Control box: when the sample start burning, press the button on control box, get ignite time Ti; when flame dies, presses the button on control box, get flame extinguish time Te.
When test finished, do not open the viewing window until exhaust for at least 2min.
Test procedure
KingPo Technology Development Limited
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