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ITC India NABL Accredited Electrical Safety testing laboratory In India

Measuring UV Intensity

An Ultravoilet light is divided into three bands UVA, UVB, UVC.

  • UVA: It is long wave UV transparent wavelength, 315 nm to 400 nm UV transparent. It causes skin tan, skin elasticity and collegen fibers.

Uses: Curing Lamps in the Curing Industries.

  • UVB: It is Medium wave UV with erythema effect, wavelength 280 nm to 320 nm. It promotes Vitamin D formation in body., but exposure for long time is not recommended

Uses : In Health care Physiotherapy Lamps

  • UVC: It is short wave with bacterial effect wavelength, 200 nm to 280 nm. It is very harmful , for long term exposure causes skin Cancer.

Uses: In Hospitals Germicidal Lamps

 

There are three fundamental parameter for UV m,measurement. These are wavelength, energy density and irradiance.

  1. Wavelength: To measure the wavelength we require a Spectroradiometer (They can measure individual peaks) or spectrometer.
  2. Irradiance: Intensity is the output energy of UV source. The amount of UV falling on a surface is called irradiance. A cm2 is the area which is used to track the UV from all angles and is determined by direct measurements. It is measured in Watt/cm2 or mW/cm2.
  3. UV Energy Density: It is exposure of UV light with time factor. That is 1 watt for 1 sec equal 1 joule. It is measured in Joules /cm2 or mJ/cm2.

 

UV instrument

Now it is very important to understand your UV measuring instrument…

It will help you and the customers to better understand the readings.

 

What factors cause?

  1. Potential confusion
  2. Measurement Errors

 

Some factors which influence Irradiance Measurements are

  • Filtering
  • Solarization
  • Cosine error

UVB or UVA light sources irradiation intensity can be detected by the UV lamp intensity meter. Multi-probe UV measurement device that can be equipped with probes: No matter you want to test the UVA,UVB or UVC band. You can select a suitable probe.

UV Light Bulbs Testing

What is UV?

Ultra Violet radiations emitted by a light source such as SUN

  • Harmful effect on human : Skin Cancer or sunburns, damage eyes, weaken immune system
  • Benefits : Trigger Vitamin D, Treatment of some skin disease such as psoriasis
 Why UV Light Bulbs?
  1. Improves indoor air quality
  2. Used in Hospitals to sanitize equipment.
  3. Increased energy savings
  4. They can prevent asthma and allergies.
UV Light Bulb Testing?

Equipment required :

  1. Suitable radiometer appropriate for 254 nm UV
  2. A true Power analyzer
  3. Test Chamber
Testing steps
  1. A lab requires 25UV bulb samples for testing.
  2. Bulbs are marked clearly from 1 to 25.
  3. Randomly 12 bulbs are selected for testing.
  4. Before testing, these 12 bulbs are operated for 100 hrs at full power
  5. The testing is done using a lamp testing chamber as per the protocol
  6. All the testing is done in care of Experts and data is recorded( Temperature of the test chamber and the distance of radiometer to the lamp centre).
  7. All the testing is done by calibrated instruments ( calibration valid for 1 year only)
Result of the testing :
  1. Relevant Lamp testing Data
  2. Average UVC efficiency

Are your cables Electromagnetic Compatible?

Are your cables Electromagnetic Compatible

Cables that are used in Electronic Equipment’s play a significant role in overall EMC situation either in positive or negative way…

The electromagnetic compatibility (EMC) principle of cables is that communication signals should be kept inside the cables, and outside electromagnetic fields should not disturb the data transmission inside the cable.

Requirement for COAXIAL Cables designed for Broadcast and communication Technology  to avoid interference  problem

 

Sr. NoMetrics 
1ImpedanceLess than 5 mΩ/m from 5 to 30 MHZ
2Screening Attenuation85 dB from 30 – 1000MHZ( Screening Class A , in IEC 61196-6 )

 

Majority of Coaxial cables available in market do not full fill the above said requirement that lead to EMC and Mechanical weakness. Thus , affects the immunity of the equipment.

For EMC testing please contact ITC India Pvt Ltd www.itcindia.org or  Wrire to info@itcindia.org

CISPR 11/ EN 55011

CISPR 11/ EN 55011

Amendment 2

Industrial, scientific and medical (ISM) radio-frequency equipment – Electromagnetic disturbance characteristics – Limits and methods of measurement

CISPR 11 is a broadly used international standard for electromagnetic compatibility within Europe for electromagnetic emissions or disturbances from Industrial, Scientific, and Medical, ISM, Equipment. CISPR 11 is conserved by CISPR: the International Special Committee on Radio Interference. It has grown from a simple document to a complex document involving a number of types of products

CISPR 11 applies to a very huge variety of equipment including everything from Wi-Fi systems, microwaves through to arc welders, all of which fall into the industrial, scientific and medical category which can use the ISM license-free bands like 2.4 GHz.

CISPR 11, EN 55011 is a standard covering radiated and conducted emissions. Most products will require an assessment of immunity standards, such as EN 61326-1: Electrical equipment for measurement, control and laboratory use; or EN 61000-6-2: Generic Standards Immunity for industrial environments.

It has grown from measuring products at a larger distance (100 meters and 30 meters) for Class A Equipment to measuring them at 3 meters. Class B equipment measurement distances have seen an equivalent degradation of “far-field” radiated emission measurements. This steady erosion of the “laws of physics” is worrisome and a trend to reverse this erosion is overdue in the engineering field of EMC and the EMC Standards arena.

List of tests

Emission Tests

CISPR 11Radiated emissions
Conducted emissions input power
IEC 61000-3-2Harmonic current emissions
IEC 61000-3-3Voltage fluctuation & flicker

Immunity Tests

IEC 61000-4-2Electrostatic discharge immunity test
IEC 61000-4-3Radiated, radio-frequency, electromagnetic field immunity test
IEC 61000-4-4Immunity to Electrical Fast Transient
IEC 61000-4-5Immunity to Surges
IEC 61000-4-6Immunity to Conducted Disturbances
IEC 61000-4-8Power frequency magnetic immunity test
IEC 61000-4-9Pulse magnetic field immunity test
IEC 61000-4-11Voltage dips
IEC 61000-4-11Voltage interruptions

CISPR 32/ EN 55032

CISPR 32/ EN 55032

CISPR 32 is a discrete standard formed for Multimedia Equipment having a rated AC or DC supply voltage not exceeding 600 V, but equipment within the scope of CISPR 22 or CISPR 13 is also within the scope of this publication. It incorporates a range of functions which include those in ITE (Information technology), broadcasting, audio, and video equipment. It also includes entertainment lighting control equipment.

In this contemporary world, ITE performs many different functions, features, and capability which were assessed by different compliance standards but now CISPR 32 is a single standard which addresses the case where all different features are integrated instead of having separate compliance standards. This standard is adopted by the European Union.

Two classes of End-User Terminal Equipment Under Test EUT (Class A and Class B) are considered.

The aims of the standard are:

  • To establish requirements which provide an adequate level of protection of the radio spectrum allowing radio services to operate as intended in the frequency range 9 kHz to 400 GHz;
  • To specify procedures to ensure the reproducibility of measurement and the repeatability of results.

Conducted Emissions from the AC mains power ports

Test set up

Radiated Emission- Test set up

Radiated Emissions below 1 GHz

Radiated Emissions above 1 GHz

CISPR 15

CISPR 15

CISPR 15

LIMITS AND METHODS OF MEASUREMENT OF RADIO DISTURBANCE CHARACTERISTICS OF ELECTRICAL LIGHTING AND SIMILAR EQUIPMENT

Reference standards for Immunity test in CISPR 15

S. NTestsStandardTitle
1Electrostatic Disruption

This test simulates electrostatic events and evaluates the ability of the EUT to tolerate such events. Testing is performed in accordance with IEC/EN 61000-4-2. All accessible enclosure surfaces and ports are evaluated unless specified as a static-sensitive surface.

IEC 61000-4-2: 2008

 ESD Immunity

 

 

Electromagnetic Compatibility—Testing and measurement techniques – Electrostatic discharge immunity test
2Electromagnetic Susceptibility

The Electromagnetic Susceptibility test exposes the equipment under test to a calibrated uniform field of radiated electromagnetic energy. The EUT is continuously monitored while exposed to the required frequency range and field strength. The test chamber, radiating antennas, and calibrated fields meet the requirements of referenced standards

IEC 61000-4-3: 1996

Radio Frequency Immunity

Electromagnetic Compatibility—Testing and measurement techniques – Radiated radiofrequency electromagnetic field immunity test
3Electrical Fast Transient

This test injects a transient/burst interference onto the Mains input power supply and signal I/O lines. The EUT and peripherals are placed on a non-conductive support platform, 10cm above the test ground plane. The EUT is monitored for disturbances during the required exposure time of positive and negative bursts

IEC 61000-4-4: 1995-01 Electrical Fast Transient ImmunityElectromagnetic Compatibility—Testing and measurement techniques – Electrical fast transient/burst immunity
4Lighting Surge

This test simulates a lightning event by inducing transients onto the AC/DC power supply lines in common and differential mode. Testing is performed in accordance with IEC/EN 61000-4-5. The product-specific standard determines the minimum requirement for the exposure to surge transient levels

IEC 61000-4-5: 1995-02 Surge ImmunityElectromagnetic Compatibility—Testing and measurement techniques – Surge immunity test
5Conducted RF Immunity

This test injects a disturbance directly onto AC/DC power. Testing is performed in accordance with IEC/EN 61000-4-6. The product-specific standard sets the level, duration, and the frequency range to apply.

IEC 61000-4-6: 1996-04 RF Common Mode ImmunityElectromagnetic Compatibility—Testing and measurement techniques – Immunity to conducted disturbances, induced by radio-frequency fields
6Power Disturbance

This test subjects the EUT to power network faults and “brownouts”. Testing is performed in accordance with IEC/EN 61000-4-11. The EUT is powered up to a nominal voltage, and then software controlled voltage dips and interruptions are introduced

IEC61000-4-11: 1994-06

Voltage Dips and Short Interruptions

Electromagnetic Compatibility—Testing and measurement techniques – Voltage dips, short interruptions and voltage variations immunity tests

Device Performance Criteria for Immunity Tests

  • Criterion A – The equipment shall continue to operate as intended without operator intervention. No degradation of performance or loss of function is allowed below a performance level specified by the manufacturer when the equipment is used as intended. The performance level may be replaced by a permissible loss of performance. If the minimum performance level or the permissible performance loss is not specified by the manufacturer, then either of these may be derived from the product description and documentation, and by what the user may reasonably expect from the equipment if used as intended.
  • Criterion B – During the test, the degradation of performance is allowed. However, no change in the operating state or stored data is allowed to persist after the test. After the test, the equipment shall continue to operate as intended without operator intervention. The performance level may be replaced by a permissible loss of performance. If the manufacturer does not specify the minimum performance level (or the permissible performance loss), then either of these may be derived from the product description and documentation, or by what the user may reasonably expect from the equipment if used as intended.
  • Criterion C – Loss of function is allowed, provided the function is self-recoverable or can be restored by the operation of the controls by the user in accordance with the manufacturer’s instructions. Functions, and/or information stored in non-volatile memory, or protected by a battery backup, shall not be lost. For each test method, the test standard specifies the appropriate criterion to be met.

 

CONDUCTED EMISSION

This test measures the levels emanating from the EUT into the AC Mains, evaluating the potential for the EUT to cause radio frequency interference to other electronic devices.  The EUT is configured based upon the requirements of the applicable test standard.

RADIATED EMISSION

This test measures the levels emanating from the EUT, thus evaluating the potential for the EUT to cause radio frequency interference to other electronic devices. Measurement methods is used in accordance with the test standard(s) referenced. The antenna is positioned at several heights while the EUT is rotated 360°. At each antenna height, the receiver scans and records the maximum peak emissions. From the recorded scans, a list of discrete frequencies is developed for that antenna polarity. The antenna is then rotated in polarity and the scan repeated. For each discrete frequency, the turntable is rotated to the determined worst angle and the receive antenna is varied in height from one to four meters for the final maximum emissions. For EUT’s with auto-ranging power supplies, a pre-scan evaluation may be performed to determine “worst-case” radiated emissions.

CISPR 22

CISPR 22
CISPR 22

CISPR 22 (An EMC standard for Information Technology (IT) Equipment)

CISPR 22 for Radio Disturbance Characteristics-Limits and Methods of Measurement. Applicable for IT equipment with a rated supply voltage not exceeding 600 V.

CISPR 22

ITC India Pvt Ltd is a NABL approved lab in electronics, electrical and photometry. BIS approved for all lighting products and TEC approved for Electronics.  We are performing EMI/EMC testing on electromedical, IT equipment, lighting, Laboratory, and household product. Testing is conducted in a shielding room.

CISPR 22 is accepted by most members of the European Community.

CISPR 22 discriminates between Class A and Class B equipment and it gives figures for conducted and radiated emissions for each class. In addition, CISPR 22 requires certification over the frequency range of 0.15 MHz to 30 MHz for conducted emissions. CISPR limits are provided in dBµV

A brief of CISPR22 Limits

 CISPR 22 CLASS A CONDUCTED EMI LIMIT
Frequency of Emission(MHz)Conducted Limit (DBMV)
Quasi PeakAverage
0.15 – 0.507966
0.50-30.007360
CISPR 22 CLASS B CONDUCTED EMI LIMIT
Frequency of Emission(MHz)Conducted Limit (DBMV)
0.15-0.5066 to 5656 to 46
0.50-5.005646
5.00- 30.006050
 CISPR 22 CLASS A 10-METRE RADIATED EMI LIMIT
Frequency of Emission(MHz)Field strength limit(DBMV/M)
30- 8839
88-21643.5
216-96046.5
Above 96049.5
CISPR 22 CLASS B 3-METRE RADIATED EMI LIMIT
Frequency of Emission(MHz)Field strength limit(DBMV/M)
31- 8840
88-21643.5
216-96046.0
Above 96054.0

Efficiency Test Method IEC 60034-2-1

Efficiency Test Method IEC 60034-2-1
Efficiency Test Method IEC 60034-2-1

Efficiency test method  IEC 60034-2-1 / IS 15999 (Part 2/Sec 1)

Applicable to:

Rotating Electric Machine: IEC 60034 is introducing to establish methods of determining efficiencies from tests and also to specify methods of obtaining specific losses.

  1. C.  Machine
  2. C. Synchronous
  3. Induction Machine (All Size in scope IEC 60034)
  4. Rotary Converters
  5. AC Commutator Motors
  6. Single Phase Induction Motor

Why high efficient Motors?

  • Save energy
  • Reduce operation cost
  • Reduce harmful greenhouse gases

Order of tests   IEC 60034-2-1

Step No. Description
1First stator winding resistance measurement at ambient temperature
2Remove accessible drive end sealing elements (without dismantling the motor)
3Clause 6.4.4.1  Rated load temperature test
4Second stator winding resistance measurement (immediately after 6.4.4.1)
5Clause 6.4.4.2 and 6.4.5.3  Load curve test with torque measurement (immediately after 6.4.4.1)
6Third stator winding resistance measurement (immediately after 6.4.4.2 and 6.4.5.3)
7Clause 6.4.2  No load test (immediately after third stator winding resistance measurement)
8Fourth stator winding resistance measurement (immediately after 6.4.2)

Determination of loss components must be performed in the following order

9Clause 8.2.2.3 Constant losses (8.2.2.3.1, 8.2.2.3.2 and 8.2.2.3.3)

Constant losses to Clause 8.2.2.3.1

(Friction and windage losses: 8.2.2.3.2)

(Iron losses: 8.2.2.3.3)

10Clause 8.2.2.4 Load losses (8.2.2.4.1.2 and 8.2.2.4.1.3)

Load losses to Clause 8.2.2.4.1:

(Stator and rotor winding losses

s, including temp. correction)

(8.2.2.4.1.2 and 8.2.2.4.1.3)

11Clause 8.2.2.5 Additional load losses (8.2.2.5.1 From a load test with torque measurement)

Additional load losses to Clause 8.2.2.5.1

(Residual losses)

12Clause 8.2.2.2  Calculate total losses
13Clause 8.2.2.1 Calculate the efficiency

ISO 7175 Testing

ISO 7175 Testing
ISO 7175 Testing

Part 1 – Safety requirements of Children Cots and folding cots for domestic use 

Part 2: Test Methods of Children Cots and Folding cots for Domestic Use 

Internal Length between 900mm to 1400 mm

This standard applies to cots that are Fully assembled and are ready to use. It is possible that additional requirements be applied for cots that can be converted into other items (e.g. changing units, playpens).

This standard does not apply to carry cots, cribs, cradles, rocking and swinging cots

Clause 4 of ISO 7175 part 1 specifies the SAFETY REQUIREMENT apply both before and after testing as per ISO 7175 part 2

Safety Requirement as per ISO 7175 -1

S.NClause Test Requirement
14.2.1Material and surfaceMust meet the requirement of ISO 8124-3
24.2.2Flammability of textile coated textile and plastic coverings  The maximum rate of flame shall be 30 m/s in accordance with ISO 8124-2
34.3Initial stabilityThe cot should not overturn in accordance with ISO 7175-2 (Cl 6.2 )
44.4.1.1Edges and protruding partsEdges shall be round and free of burrs and sharp edges
54.4.1.2Self-tapping screwThis screw shall not be used to fasten components when dismantling the cot for transportation.
64.4.1.3Labels and decalsShould not be used on the internal surface of cot sides and ends
74.4.1.4Small partsIn accordance with ISO 7175-2
84.4.1.5Castor and WheelsShould not be fitted exception are there
94.4.2.2Assembly holesNo accessible hole between 7 mm dia and 12 mm dia unless depth is less than 10mm.
104.4.2.3Distance between cot base and sides and end s25 mm cone shall not pass between cot base and sides and between cot base and ends.
114.4.2.4Opening in mesh sides and ends7mm cone shall not pass through the mesh openings.
124.4.2.5Distance between slats of cot base60 mm cone should not pass between two adjacent slats of the cot base.
134.4.2.6Opening in the mesh of cot base85 mm cone shall not pass through a cot base made of mesh.
144.4.3Head Entrapment on the exterior of the cotIn accordance with ISO 7175 – 2
154.4.4Shear and squeeze pointsIn accordance with ISO 7175 – 2
164.4.5Snag pointsIn accordance with ISO 7175 – 2
174.4.6Locking SystemAll cots should be equipped with at least two locking system
184.4.7Cot baseIn accordance with ISO 7175 – 2
194.4.8Sides and endsIn accordance with ISO 7175 – 2
204.4.9Cot rimNo filing shall be removed from cot rim when testing as per 7175-2, 6.6 bite test
214.5Final StabilityThe cot should not overturn as per cl 6.12 of ISO 7175-2
224.6Mattress size  The distance between mattress and sides shall be less than 30mm
235PackagingThe plasting covering should be tested as per ISO 8124-1
246Instruction for useRead carefully and alphabet size >5mm

Part 2 Test Method : Children’s cot and folding cots for domestic use

ISO 7175 Testing 2
ISO 7175 Testing 2

This standard is designed to prevent the child from climbing out. Does not apply to swinging and rocking chair.

Test equipment

Test forces must be applied with suitable object like cones, cones of dia 7mm, 25mm, 45mm, 60mm, 65mm and 85mm made of plastic or other hard material are required for applying force.

Measurements/ Testing

1 . Before testing, Assemble and inspect the cot visually . Tight all the fittings. Determine whether exposed edges, screws, bolts, zips and other fittings are rounded off and do not have sharp edges.

  1. Measure the height of sides, holes and distance between slats of cot base, mesh width, side slats, clearance between cot base and sides and ends.
  2. Impact testing
  3. Stability tests
  4. Locking and location device
  5. Bend testing
  6. Fatigue testing
  7. Endurance testing
  8. Static loading testing
  9. Inspection
  10. Mechanical testing

 For more information please visit www.itcindia.org or write info@itcindia.org 

EN/ IEC 62262 Impact Testing

EN/ IEC 62262 Impact Testing

Degrees of Protection Provided by Enclosures for Electrical Equipment Against External Mechanical Impacts (IK Code)

The IEC/EN 62262 standard defines an IK code which gives the equipment capacity to resist to mechanical impacts, on all the electrical enclosure surfaces.

Product on which IK is applicable :

  1. Electrical Enclosures
  2. Empty Enclosures
  3. CCTV Cameras
  4. LED street, Roadway and other lighting products
  5. Light Fixtures and many other products

Reference standards :

  1. IEC 60068-1
  2. 60068-2-75

Relevant product standards

We can execute impact testing describe above to any product standard. For Example:

  1. IEC/BS/EN 61429: Low voltage switch-gear and control assemblies
  2. IEC/BS/EN 62271: High Voltage switch-gear and control-gear.
  3. IEC/BS/EN 50130-5 Alarm System (Environment Test Method)
  4. IEC/ BS/EN  60598-1 Luminaries
  5. IEC 62696: Luminaries (Application of IK code as per  IEC/EN 62262)
  6. IEC /BS/ EN 62676-1-1 Video surveillance system for use in security applications.
  7. IEC /BS/EN 62208 Empty Enclosure for Low voltage switch-gear and control-gear assemblies.

Benefits of IK testing

It caters the evidence of the suitability of the enclosure for its intended environment.

  1. More durability
  2. High in demand
  3. Beneficial for the end user
IK CodeImpact Energy in joules Impact Testing
IK 010.14 J
IK 020.2 J
IK 030.35 J
IK 040.5 J
IK 050.7 J
IK 061 J
IK 072 J
IK 085 J
IK 0910 J
IK 1020 J
IK Code IK 00IK 01 to IK 05IK 06IK 07IK 08IK 09IK 10
Impact EnergyLess than 1 J1 J2 J5 J10 J20 J
R mm (Radius striking element)  101025255050
MaterialPolyamidePolyamideSteelSteelSteelSteel
Mass in Kgs 0.20.50.51.755
Pendulum Hammer🗹🗹🗹🗹🗹🗹
Spring hammer🗹🗹🗹🗷🗷🗷
Free Fall 🗷🗷🗹🗹🗹🗹
Spring Hammer Pendulum HammerFree Fall
Spring HammerPendulum HammerFree Fall

For more details please ITC India Pvt Ltd . Email info@itcindia.org or visit www.itcindia.org