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Vox Power Limited | Unit 2, Red Cow Interchange Estate, Ballymount, Dublin 22, D22 Y8H2, Ireland | T +353 1 4591161 |

www.vox-power.com

DOC-MN-008-03, VCCS300 User Manual

Installation Guidelines for optimum EMC performance

•

VCCS300 units should be mounted within a metal enclosure using the mounting fixtures provided.

(See “Mechanical Dimensions & Mounting” section)

•

If the application enclosure is not metal, then a metal ground plate should be used to mount both the power supply and the load.

•

Both input and output cables should be fixed as close as possible to the ground plate or metal enclosure.

•

Input and output cables should be separated as much as possible from each other or a shield/screen used to isolate RF currents

•

All cables lengths and loop areas should be minimised.

•

Where cables must enter or exit the enclosure, good high frequency 100nF decoupling capacitors of sufficient voltage rating should be connected to the
cables as close to the entry/exit point as possible.

For further details or assistance contact Vox Power.

Содержание VCCS300 Series

Страница 1: ...sion before using the product and refer to the latest relevant user manual for further information relating to the use of the product Unless specifically otherwise agreed in writing by Vox Power products sold by Vox Power are not intended for use in connection with life support systems human implantations nuclear facilities or systems aircraft spacecraft military or naval missile ground support or...

Страница 2: ...0 Series Overview 1 Contents 2 Part Numbers and Ordering Information 3 Important installation information 4 Product Operation 5 Output Performance 12V 24V 48V Models 7 Efficiency Performance 9 Power Ratings 10 Component Temperatures 11 Mechanical Dimensions and Mounting 12 Connector details 13 Safety 14 EMC Compliance 15 Reliability 17 Installing your VCCS300 Product 18 Accessories 22 ...

Страница 3: ...A 300W 2 180mV 50mV 0 1 VNOM 15V VCCS300X 24 1 24V 12 5A 300W 2 240mV 50mV 0 1 VNOM 30V VCCS300X 48 1 48V 6 25A 300W 2 480mV 50mV 0 1 VNOM 60V 1 X S for ITE M for Medical 2 Subject to appropriate deratings PART NUMBERING SYSTEM SERIES VCCS300 S 12 0 0 0 Factory use Product Family Output Voltage S Industrial Standard M Medical 12 24 48 Industrial unit has ITE approvals IEC62368 Medical unit has med...

Страница 4: ...supply contains no user serviceable parts Repairs must be carried out by authorised personnel only Contact Vox Power for further information COOLING For proper operation of the power supply the user must ensure all component temperatures are within specifications A thorough review of the user manual should be carried out for details of thermal performance EARTH TERMINAL MARKING Class I installatio...

Страница 5: ... inrush specification in the datasheet is given at 25 C cold start Inrush current will increase for temperatures above 25 C and re application of AC mains Active Power Factor Correction PFC is used to ensure an accurate input current waveform with extremely low harmonic content exceeding the requirements of EN61000 3 2 This stage also provides active input current limiting which prevents overloadi...

Страница 6: ...mption of 1W To achieve this the unit enters burst mode when the output power is below 6W When in burst mode the ripple frequency will reduce significantly The unit returns to normal operation when the output load goes above 12W Input Over Current Protection OCP The input circuitry is protected from excessive input current by means of an over current protection circuit which limits the input curre...

Страница 7: ... This process repeats until the overload condition is removed at which point normal operation resumes Reverse Current Protection RCP The output rectifier uses synchronous rectification to achieve high efficiency Typically synchronously rectified outputs can both source and sink current The VCCS300 series outputs have internal protection to prevent any reverse current flowing into the unit Start up...

Страница 8: ...p The diagram below shows details of the setup and sources of noise pickup The output ripple frequency can vary from 100kHz to 300kHz but is typically 180kHz Under light load conditions 6W the unit may enter burst mode and the ripple frequency will reduce significantly but will remain within specification Transient Response The VCCS300 series uses the latest current mode control algorithms to achi...

Страница 9: ...C MN 008 03 VCCS300 User Manual Efficiency Performance The efficiency of the VCCS300 product is dependent on parameters such as mains voltage output power and on the model The plots below show typical efficiencies of a VCCS300 product for the standard output voltages The plots cover the full load and line voltage range TYPICAL EFFICIENCIES ...

Страница 10: ...ction Cooled 3 4 Thermal Derating Table Convection Ambient Temperature 85VRMS 2 120VRMS 220VRMS 40 100 100 100 5 100 100 100 5 100 92 100 10 100 88 94 20 90 80 85 30 80 70 75 40 67 59 65 50 50 47 53 60 25 33 40 70 18 18 25 The convection cooled rating applies under the following conditions No forced airflow or conduction cooling The VCCS300 is mounted horizontally Mains voltage deratings apply at ...

Страница 11: ...ns listed below using glue to hold the thermocouples in place 3 Power the system and monitor the temperatures until they reach steady state 4 Ensure that all temperatures remain below recommended temperatures under normal conditions and do not exceed maximum temperatures under worst case conditions It is good practice to leave some margin in the design Description Reference Measurement Position Re...

Страница 12: ...ew from top side N1 N4 1 M3 Hex Socket Head Cap Screw 3mm Head height 0 50NM Baseplate Mount Screw from bottom side N1 N4 M4 Customer Preference 6mm from bottom of Baseplate 0 55NM Output Terminal M4 SEM POZI M4 SEM screw 8mm max length 0 55NM Notes 1 Top Side mounting screws are obstructed by components in some areas M3 Hex socket screws should be used to allow angled access for tightening with a...

Страница 13: ...s Manufacturer Housing Terminal J1 Mains Input 1 Live 2 Neutral 2 Pin 7A 250VAC 7 92mm Locking 1 JST VAR 2 SVA 41T P1 1 J2 Protective Earth FASTON PIDG series Positive lock 0 25EX TE Connectivity 165536 1 J3 Positive Output Power J4 Negative Output Power M4 terminal 0 55Nm KST SNBS5 4 Notes 1 Cable 18 20AWG 300V 7A 105 C 2 Direct equivalents may be used for any connector parts 3 All cables must be...

Страница 14: ...s Input to Output 2 MOPP 1 4000 VAC Input to Chassis 1 MOPP 2000 VAC Output to Chassis 1 MOPP 1500 Vac Earth Leakage Current NC SFC Class I 264Vac 63Hz 25 C 200 400 µA Touch Enclosure Leakage Current NC Class I Class II 264Vac 63Hz 25 C SFC Class I Class II 264Vac 63Hz 25 C 0 200 200 500 µA Patient Leakage Current NC Class I Class II 264Vac 63Hz 25 C SFC Class I Class II 264Vac 63Hz 25 C 100 100 1...

Страница 15: ...turbances induced by RF fields IEC61000 4 6 Test Level 3 10V 0 15 to 80MHz sine wave AM 80 1kHz Power Frequency Magnetic Fields IEC61000 4 8 Test level 4 30A m 50Hz Voltage Dips IEC61000 4 11 2 0 10ms Criterion A 0 20ms Criterion B 3 70 0 5s 40 0 2s Criterion A at 240V and Criterion B at 100V Voltage interruptions IEC61000 4 11 0 250 300 cycle as per IEC60601 1 2 2014 Criterion B Voltage Sag Immun...

Страница 16: ...al ground plate should be used to mount both the power supply and the load Both input and output cables should be fixed as close as possible to the ground plate or metal enclosure Input and output cables should be separated as much as possible from each other or a shield screen used to isolate RF currents All cables lengths and loop areas should be minimised Where cables must enter or exit the enc...

Страница 17: ...aluating competing MTBF figures it is important that only the same techniques are compared The quoted VCCS300 reliability figures use Method I Case 3 Ground Fixed controlled which specifies an ambient temperature of 30 C and an upper confidence level of 90 It is also assumed that the product is operated at 100 duty cycle has an input voltage of 120VRMS an output power of 300W and that the baseplat...

Страница 18: ...an illustration of how to series connect three units to give 900W of output power When mounting multiple units ensure to maintain sufficient safety clearances between units See installation clearances section for more details Isolation to Ground Care must be taken not to exceed the output isolation to chassis ground when series connecting units Each output is rated for 2200 Volts maximum between e...

Страница 19: ...em and increase system reliability In share mode the output voltage of each unit has an artificial voltage drop added that reduces the output voltage as the current increases At 0 load the voltage is typically VNOM 2 5 at 50 load it is VNOM and at 100 load it is VNOM 2 5 Normal Mode For normal parallel mode SW1 should be set to normal position In this mode the highest set output will supply all th...

Страница 20: ...ex Socket Head Cap Screws or from the bottom side with 4x M4 screws The diagrams below show a VCCS300 unit attachment to a heatsink from top side and bottom side Before assembly ensure both the baseplate and heatsink surfaces are clean and free from debris TOP SIDE MOUNTING BOTTOM SIDE MOUNTING Top Side mounting screws are obstructed by components in some areas M3 Hex socket screws should be used ...

Страница 21: ...ieved in a variety of ways such as a plastic enclosure insulating sheet or insulating mounting pillars Plastic enclosure Insulator Insulating Spacers Must meet safety agency requirements No accessible conductive parts Must meet safety agency requirements Recommend 5mm creepage from all edges M4 thread Male Male or Male Female Nylon 6 6 Mount baseplate directly to Enclosure or Heatsink Enclosure or...

Страница 22: ...D22 Y8H2 Ireland T 353 1 4591161 www vox power com DOC MN 008 03 VCCS300 User Manual Accessories Description Photo Drawing Order code VCCS300 Cable Set 1x Input connector housing 2x Input crimp connectors 1x Earth crimp connector 2x Output crimp connector CAB V3 VCCS300 Cover Kit CKIT V3 ...

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