ZY_2 Needle Flame Test Apparatus compares with IEC60695_5_11

1. Application scope

The IEC60695-5-11 specifies a needle test to simulate the effect a small flame which may result from fault conditions, in order to assess by a simulation technique the fire hazard. It is applicable to electro-technical equipment, its sub-assemblies and components and solid electrical insulating materials or other combustible materials.  

2. Description of the test apparatus

1) Burner: the burner to produce the test flame shall consist of a tub at least 35mm long with a bore of 0.5mm±0.1mm and an outer diameter not exceeding 0.9mm.The burner is supplied with butane or propane gas having gas having a purity of at least 95%.  

ZY-2: The burner is made by stainless steel, the size is Φ 0.5mm ± 0.1mm, outer dia.: ≤Φ 0.9mm, Length: 35mm.  

2) Flame: With the axis of the burner in the vertical position, the gas supply is adjusted so that the length of the flame is 12mm±1mm, when viewed in subbdued light against a dark background. The test time for the temperature to increase from 100℃±5℃ to 700℃±3℃ shall be 23.5s±1.0s.  

ZY-2: The burner angle can be adjusted at 450 or 900. The flame height is 12mm ± 1mm (with height gauge), the background is black, the flame requirement is rising time from 100℃±2℃ to 700℃±3℃ should within 23.5s±1s.  

3) Lab chamber: the lab chamber shall have an inside volume of at least 0.5m3. The chamber shall provide a draught-free environment, whilst allowing normal thermal circulation of air pass the test specimen. The chamber shall permit observation of the test in progress. The inside surfaces of the wall shall be a dark color.  

ZY-2: The working dimension is 0.5CBM and made by stainless steel. The equipment with a view-window made by stalinite.  

4) Thermocouple

A sheathed fine wire type K (NiCr/NiAl) with an outer sheath diameter of 0.5mm.

ZY-2: Thermocouple: Φ0.5mm K type

5) Severities

Preferred values of duration of application of test flame are as following:

5s, 10s, 20s, 30s, 60s, 120s

ZY-2：Burning duration: 0-999.9s±0.1s auto record, manual pause

4. Evaluation of test results

The test specimen is considered to have satisfactorily withstood the needle flame test if one of the following situation applies:

a. There is no flame and no glowing of the test specimen and no ignition of the specified layer or wrapping tissue.

b. Flames or glowing of the test specimen and surrounding parts extinguish within 30s after the removal of the needle flame. Also the surrounding parts have not burnt away completely and there has been no ignition of the specified layer or wrapping tissue.  

See from the comparison, ZY-2 needle flame test apparatus completely meets the requirement of IEC60695-5-11. Meanwhile, Pego provides the third-Lab Calibration Certificate authorized by CNAS. Welcome to contact us to get more information. 

The list of IEC60061_3 E14 lamp cap and lampholder gauges

1) Go Gauge for E14 caps on finished lamps (7006-27F-1)

Purpose: To check the maximum dimensions of the screw thread and dimension T1 minimum of E14 caps on finished lamps.

Testing: when the cap on a finished lamp has been screwed into gauge as far as it will go,  the centre contact shall be co-planar with, or project beyond surface X.

7006-27F-1

2) Not go gauge for E14 caps on finished lamps (7006-28B-1)

Purpose: to check the minimum outside(major) diameter of the screw thread, dimension d, of E14 caps on finished lamps.

Testing: when the gauge is placed over the thread of the cap on a finished lamp, held cap uppermost, the centre contact shall not project beyond surface X.

7006-28B-1

3) Gauge for finished lamps fitted with E14 caps for testing protection against accidental contact (7006-55-2)

Purpose: to check protection against accidental contact

Testing: The shape of the lamp with regard to protection against accidental contact is assumed to be correct if the test sample being pushed as far as possible into the gauge, plane W does not protrude beyond plane V.

Note: The application of this gauge is restricted to the lamps (candle lamps, round bulb lamps, domestic tubular lamps, pygmy lamps) when they are fitted with E14 caps, in according with sheet 7004-23.

7006-55-2

4) Gauge for finished lamps fitted with E14 caps for testing contact making (7006-54-2)

Purpose: to check lamp dimension for contact making in IEC holders

Testing: the shape of the lamp with regard to the fit in the lampholder is assumed to be correct if the lamp can be pushed into the gauge till plane W reaches plane V or projects beyond it.

5) Go gauge for dimension “S1” of E14 caps on finished lamps (7006-27G-1)

Purpose: To check the dimensions S1 minimum and S1 maximum of E14 caps on finished lamps.

Testing: When the cap on a finished lamp has been pushed into the gauge as far as it will go, the plunger surface W shall be co-planar with or project beyond surface X but it shall not project beyond surface Y.

7006-27G-1

6) Go gauges for screw threads of E14 lampholders (7006-25-7)

Purpose: to check the minimum dimensions of the lampholder screw thread and dimension X shown on sheet 7005-20

Testing: it shall be possible to screw the gauge into the lampholder without using undue force.

7) Not go gauges for screw threads of E14 lamp holders (7006-26-4)

Purpose: to check the maximum minor diameter of the screw thread, dimension D2 of lampholder E14.

Testing: the screw thread of the lampholder shall be assumed to be correct if the gauge does not enter by its own weight so far that the thread protrudes beyond surface T.

7006-26-4

8) Plug gauge for E14 lampholder for testing contact making ( 7006-30-2)

Note: the application of this gauge is restricted to lampholders for lighting fittings equipped with the lamps (candle lamps, round bulb lamps, domestic tubular lamps, pygmy lamps) when these are fitted with E14 caps, in accordance with sheet 7004-23

9) Plug gauge for lampholder E14 with candle sharped shaft for candle lamps for testing contact making (7006-30A-1)

This gauge is to be used for testing contact making in lampholders with candle sharped shafts designed especially to make candle lamps only.

7006-30A-1

10) Guage for testing contact-making and protection against accidental contact during insertion of lamps E14 lampholder (figure number: 7006-31-4)

Note: the application of this gauge is restricted to lampholders for lighting fitting equipped with lamps (candle lamps, round bulb lamps, tubular lamps, pygmy lamps) when these are fitted with E14 caps, in accordance with sheet 7004-23

IEC60335_1 clause 25.14 Requirement for Flexing Test of Supply Cord

Appliances provided with a supply cord which are moved while in operation, shall be constructed so that the cord is adequately, protected against excessive flexing where it enters the appliance.  

The part of appliance comprising the cord entry, the cord guard if any and the supply cord, is fixed to the oscillating member so that when the latter is at the middle of its travel, the axis of the cord where it enters the cord guard or inlet is vertical and passes through the axis of oscillation. The major of the section of flat cords shall be parallel to the axis of oscillating.  

The cord is loaded so that the force applied is:

1) 10N for cords having a nominal cross-sectional area exceeding 0.75mm2.

2) 5N for other cords.  

The distance A between the axis of oscillation and the point where the cord or cord guard enters the appliance, is adjusted so that when the oscillating member moves over its full range, the cord and load make the minimum lateral movement.  

The oscillating member is moved through an angle of 900 (450 on either side of the vertical), the number of flexing for type Z attachments being 20000 times and for other attachments 10000 times, the rate of flexing is 60 per min.  

A flexing is one movement at 900, the cord and its associated parts are turned through with the rated current of the appliance at rated voltage. The test shall not result in:

1. Short circuit between the conductors

2. Breakage of more than 10% of the strands of any conductor

3. Separation of the conductor from its terminal

4. Loosening of any cord guard

5. Damage to the cord or cord guard which could impair compliance with this standard.  

6. Broken strands piercing the insulation and becoming accessible. 

The List of Testing Equipment for Plugs and Socket Outlets According to IEC60884_1

1. Test Probe B (jointed test finger) refers to IEC60884-1 clause 10
2. Test probe 11 (unjointed test finger) refers to IEC60884-1 clause 10
3. Ball Pressure test apparatus refers to IEC60884-1 clause 25
4. Ground resistance tester refers to IEC60884-1 clause 11
5. Insulation resistance tester refers to IEC60884-1 clause 17
6. Withstand voltage tester refers to IEC60884-1 clause 17
7. Plug socket breaking endurance test system refers to IEC60884-1 clause 21 and figure 16
8. Verification force plug socket test apparatus refers to IEC60885-1 clause 23.2 figure 20
9. Apparatus for testing cord retention refers to IEC60884-1 clause 23.2 figure 21
10. Tumbling barrel test machine refers to IEC60884-1 clause 23.4 figure 21
11. IK01-IK06 Pendulum impact hammer apparatus refers to IEC60884-1 clause 24.1 and figure 22, 23, 24, 25
12. Low temperature impact test device refers to IEC60884-1 clause 24.4 and figure 27, 42
13. Glow-wire test apparatus refers to IEC60884-1 clause 28.1.1
14. Tracking index test apparatus refers to IEC60884-1 clause 28.2
15. Salt spray test chamber refers to IEC60884-1 clause 29
16. Plug-pin temperature rising tester refers to IEC60884-1 clause 23.3
17. Creepage distance caliper refers to IEC60884-1 clause 27

List of test probes - Pego Tester

List of probes:

Probes and application	Probe code	Short description	Force to be applied
Access probes of IEC60529 (IP code)	Probe A	Sphere:Φ50 with handle	50
	Probe B	Jointed test finger	10
	Probe C	Rod: Φ2.5-length 100	3
	Probe D	Wire: Φ1.0-length 100	1
Object probes of IEC60529 (IP code)	Probe 1	Sphere: Φ50	50
	Probe 2	Sphere: Φ12.5	30
Other access probesPersons against access to_ hazardous live parts or_ hazardous mechanical parts	Probe 11	Unjointed test finger	50
	Probe 12	Cylindrical pin: Φ4-length 50
	Probe 13	Conincal pin: Φ3 to 4-length 15
	Probe 14	Bar: 3*1	20
	Probe 15	Deleted
	Probe 16	Deleted
	Probe 17	Wire: Φ0.5
	Probe 18	Small finger probe: Φ8.6-length 57.9	10
	Probe 19	Small finger probe: Φ5.6-length 44	10
Other access probesPersons against access_ to hazardous mechanical parts	Probe 31	Cone: Φ110/60	50
	Probe 32	Rod: Φ 25	30
	Probe 33	Delected
Other access probesPersons against access_ to hot or glowing parts	Probe 41	Probe: Φ 30
	Probe 42	Deleted
	Probe 43	Bar: 50*5

Pego Tester has the full sets of test probes, please contact the sales to get more information.

Thermocouple - Pego Tester

Thermocouple is a commonly used temperature measuring component in temperature measuring instruments. It directly measures the temperature and converts the temperature signal into a thermoelectric potential signal, which is converted into the temperature of the measured medium by an electric meter (secondary meter). The shape of various thermocouples is often very different due to needs, but their basic structure is roughly the same, usually composed of hot electrode, insulating sleeve, protection tube, junction box and etc., and often equip with display instrument, recording instrument and electronic regulator, like multiplex temperature meter, black test corner and etc.

According to the seeback effect, when two different metals are connected together, there is a contact voltage between the two contact points, which depends on the temperature. The connection of thermocouple materials is standard, and the different properties of the thermocouple materials determine their different applications.

Type	Material		Temperature range
	+	-
T	Cu	CuNi	-270℃-400℃
K	NiCr	NiSi	-270℃~1372℃
B	PtRh (30)	tRh	270℃~1820℃
N	NiCrSi	NiSi	-270℃~1300℃
E	NiCr	CuNi	-270℃~1300℃
R	PtRh (10)	Pt	-50℃~1769℃
S	PtRh (13)	Pt	50℃~1769℃
J	Fe	NiCu	-210℃~1200℃

The technical advantages of thermocouple: 1). thermocouple temperature measurement range is wide, performance is stable; 2). measurement accuracy is high, thermocouple is in direct contact with the object to be tested, and is not affected by intermediate medium; 3). thermal response time is fast, and thermocouple has flexible response to temperature change; 4). The measuring range is large, and the thermocouple can be continuously measured from -40 to + 1600 °C; 5). the thermocouple has reliable performance and good mechanical strength. 6). The service life is long and the device is convenient.

About Flicker - Pego Tester

As we all know, LED lights are more and more popular with the advantages of energy saving and environmental protection, but if the quality of LED lights is not good, there is a serious strobe. This strobe is undetectable to the naked eye and can easily be ignored by parents and children. LED lights on the market, there may be serious strobe!

1. Where does LED flicker comes from?

Strobe is the depth at which the luminous flux of an electric source fluctuates. The greater the fluctuation of the luminous flux, the more severe the stroboscopic. The depth of the fluctuation of the luminous flux of the electric light source is directly related to the technical quality of the electric light source. Conventional luminaires are powered by alternating current, and their brightness varies with the periodic variation of the alternating current. The strobe of the luminaire is formed by the change of darkness of the light. It is usually divided into two types: one is that the frequency of change is below 100 Hz, and the stroboscopic light can be captured by the human eye; the other is that the frequency of change is above 100 Hz. This strobe will not be seen.

2. What are the potential hazards of stroboscopic effects on the human body?

There are related biological and medical research on the possible damage to the human body caused by stroboscopic:

1). May cause brain cell damage. Some researchers say that by observing EEG, even if the stroboscopic light in the environment is so fast that it is undetectable, the retina of the organism can still resolve and respond to light with a frequency of 100-160 Hz or even 200 Hz. In the animal experiment represented by cats, 100-120 Hz light has caused cell burns in the brain, and the burnt cells belong to the lateral geniculate tissue, which plays a role in controlling the eyeball.

2). May affect reading and vision. Studies have shown that the bright stroboscopic of fluorescent lamps and CRT displays can affect the trajectory of eye movement when people read text. In addition, in some health check reports, visual impairment is caused by stroboscopic fluorescent lamps.

3). Long-term use can cause visual fatigue, and even headaches, especially students, children are more vulnerable. This strobe is undetectable to the naked eye and can easily be ignored by parents and children.

3. How can ordinary people determine whether there is strobe in LED products?

The OHSP-350F Flicker photometer is a portable equipment can carry for site test, it can test scintillation Index, flicker percentage, scintillation depth, flicker frequency, illumination, IES EVE illumination, FFT frequency spectrum, CCT, CRI and etc. And the equipment will prompt risk of flick. However, it focuses on the analysis of stroboscopic data. It can be connected to the PC source to display measurement of flicker frequency, frequency and stroboscopic area waveform.