 
electrical equipment
MESIT QM ELECTRIC EQUIPMENTS
LABORATORY
DIVISION 4 - MESIT QM ELECTRIC EQUIPMENTS LABORATORY
Accredited testing laboratory No. 1004.3 accredited by the Czech Accreditation Institute
Division 4 - MESIT QM examine the electrical and electrotechnical products from view of:
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usage in a civil and military aviation (device and deck equipments device and dashboard equipment of airplanes). The laboratory is authorised for these activities along with AUTHORISATION ? emitted by Office of Civil Aviation of Czech Republic. |
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issue of a Test Report as background for conformity assesment - along with Act No. 22/1997 Coll. in force and GO No. 168/1997 Coll. , GO No. 169/1997 Coll. in force |
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special requests of a customer |
ELECTROMAGNETIC COMPATIBILITY (EMC) ( GO No. 169/1997 Coll. ):
Testing laboratories of the division 4 - MESIT QM conduct tests of products concerning their interference radiation and radiation interference resistance of products along with GO No. 169/97 Coll - Technical requests on products concerning their electromagnetic compatibility.
Test range:
Emission measurement:
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terminal interference voltage - CSN EN 55011, CSN EN 55013, CSN EN 55014, CSN EN 55015,
CSN EN 55022 |
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radiated interference field strength - CSN EN 55011, CSN EN 55013, CSNEN 55015, CSN EN 55022 |
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interference power - CSN EN 55013, CSN EN 55014 |
Electromagnetic immunity tests:
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electrostatic discharge - CSN EN 61000-4-2 |
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eleetromagnetic field - CSN EN 61000-4-3 |
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fast transients/burst - CSN EN 61000-4-4 |
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surge - CSN EN 61000-4-5 |
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conducted disturbances - CSN EN 61000-4-6 |
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power frequency magnetic field - CSN EN 61000-4-8 |
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voltage dips, short interruptions and variations - CSN EN 61000-4-11 |
ELECTROMAGNETIC SAFETY
Testing laboratory conducts tests on products concerning their electrical safety along with NNV No. 168/97 Coll. - Technical requests on electrical low voltage appliances.
The most commonly controlled groups of products:
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information technology appliances including electrical office appliances |
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safety protection transformers - CSN EN 60742, CSN EN 61558-1 |
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electric household and similar purpose appliances - CSN EN 60335-1 |
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electric metering devices - CSN EN 61010-1 |
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electric toys - CSN EN 50088 |
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electronic instruments - CSN EN 60065 |
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medical electric equipments- CSN EN 60601-1 |
CLIMATIC TESTS
Testing discipline |
Technical parameters of testing appliances |
Dust test |
Volume of testing room 0,2 m 3 |
Cold chamber test |
Temperature max. ?60 °C, size of testing room (1360 x 1280 x 1150) mm, volume of testing room 2000 dm 3 |
Dry heat test |
Temperature max. +180 °C, size of testing room (1250 x 640 x 1240) mm |
Moist heat test |
Temperature max. +90 °C, size of testing room (900 x 880 x 820) mm, moisture range (30 until 100) % RV |
Saline mist test |
Temperature max. (+20 until +50) °C, size of testing room (775 x 685 x 1005) mm, volume of testing room 530 l |
Low pressure test |
Pressure from 4 kPa, size of testing room (1360 x 1280 x 1150) mm, volume of testing room 2000 dm 3 |
Temperature
change test |
Temperature in a testing room max (-60 until +150) °C, heating speed 10 °C/min, cooling rate 10 °C/min, size of testing room (850 x 850 x 700) mm |
Combined test
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cold, low pressure |
Temperature max. -60 °C, pressure from 4 kPa, size of testing room (1360 x 1280 x 1150) mm, volume of testing room 2000 dm 3 |
Combined test
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dry heat, low pressure |
Temperature in a testing room max. (+20 until +200) °C, pressure min. 4kPa, size of testing room (365 x 270 x 480) mm |
MECHANICAL TESTS
Part of electric apparatus testing is stabilization of electric properties in vibration and surge action. The range of providing tests is given by technical parameters of testing equipments:
Testing discipline |
Technical parameters of testing appliances |
Vibrating test |
Vibration acceleration of table max. 300 m/s 2 , table amplitude max. 20 mm (tip ? tip), frequency range of frequency generator f(1 until 2 000) Hz, wobbulation in frequency coverage max. 10 okt./min, fixative range of vibratory table desktop max. (250 x 400) mm, mass of testing sample max .50 kg |
Surge test |
Acceleration of surge max. 2500 m/s 2 , width of surge (1 until 30) ms, mass of testing sample max. 100 kg, surge frequency 2 surges/s, proportion of vibratory table desktop (500 x 400) mm |
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