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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

 

Important installation information 

The VCCS300 series of open frame power supplies are intended for use within end customer applications which restrict access to un-authorized personnel. The 

instructions in this manual and all warning labels on the product must be adhered to carefully. 
 

SAFETY 
The VCCS300S and VCCS300M series are designed in accordance with the relevant safety requirements of IEC/EN/UL/CSA 62368-1, IEC/EN/UL/CSA 60601-1, Low 

voltage Directive LVD 2014/35/EU and EMC directive EMC 2014/30/EU. 
All VCCS300 series power supplies must be installed correctly in a controlled environment which restricts access to any un-authorised personnel. Equipment and 
system manufacturers must protect service personnel against unintentional contact with the output terminals. 

 
HAZZARDS 

Dangerous voltages are present within the power supply. It should only be handled by qualified personnel when the power supply has been disconnected from the 
mains supply voltage for more than 3 minutes. 

External surfaces of the power supply may become extremely hot during and after operation. Appropriate care should be taken.  
If series and/or parallel combinations of outputs exceed safe voltage and/or energy levels, the final equipment manufacturer must provide the appropriate protection 

for both users and service personnel.  
 

DE-RATINGS 

Mains Voltage 

The output power must be de-rated by 2.5W/V

RMS

 below 120 V

RMS

 to 85V

RMS

 minimum. (300W @ 120 V

RMS

, 225W @ 90 V

RMS

Thermal 

The output power must be de-rated as outlined in the “Power Ratings” section of the user manual. 

 

Remember to take the appropriate de-rating into consideration before specifying any VCCS300 power supply for an application. If in any doubt, please contact Vox 
Power directly or your local Vox Power representative. 
 

HEALTH AND SAFETY  
To comply with section 6 of the health and safety at work act, a label that is clearly visible to service personnel must be placed on the final equipment. These labels 

warn that surfaces of the power supply may be hot and should not be touched when the product is operating.  
 

FUSING 
The power supply has internal dual pole fusing. One fuse in each line. 

Fuses are not replaceable. Damaged units should be returned to Vox Power for analysis and repair.  
DC operation is not covered by safety approvals. Contact Vox Power for details.

 

 

SERVICING 
The power 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 installations only) 

To comply with the requirements of IEC/EN/UL/CSA 62368-1, & IEC/EN/UL/CSA 60601-1, where the incoming wiring earth is intended for connection as the main 
protective earth conductor and where the terminals for such a connection is not supplied on a component or subassembly, the user shall add an appropriate label 
displaying a protective earth symbol in accordance with IEC60417-5019 (2006-08) directly adjacent to the terminal. The label should be durable and legible and should 

comply with IEC62368-1 clause F.3.10 Test for durability of Markings and IEC60601-1 clause 7.1.3 Durability of Markings. 
 

CLASS II INSTALLATIONS 
To ensure end equipment complies  with  safety certifciations, the user should carry out a  thorough review of the VCCS300  safety certification reports and any 

engineering conditions of acceptability contained therein. 
A review of the “

Installing your VCCS300 product” section in the user manual should also be carried out. 

 
WARRANTY 

Contact your sales agent or Vox Power for product repairs. See Vox Power standard terms and conditions for warranty conditions.  
 

PRODUCT LABELS 
The external product label contains information relevant to the power system. The label contains input voltage, maximum input current, input frequency, maximum 

output power, fuse rating and type, serial number, approvals and product part number in form VCCS300X-YYYY-ZZZ. 
 
OTHER 

 

A label warning that external surfaces are hot during operation and that the unit should be allowed to cool down properly should be placed on the unit 
where such a label is clearly visible. 

 

The VCCS300 series is designed to comply with EMC standards but it does not imply that the end system will be compliant.  

 

To prolong the life of the unit, use in a dust free environment. 

 

Units can sometimes be damaged during transit. In the event of transit damage, DO NOT connect power to the unit.  Contact your sales agent or Vox 

Power. 

 

Always use adequately sized cables and ensure good crimp connections. Use cable supports to minimise stress on connectors. 

 

Avoid excessive shock or vibration. 

 

Ensure to adhere to maximum pentration depth for mounting screws. See the 

Mechanical Dimensions and Mounting section in the user manual.  

 

Ensure to adhere to minimum installation clearances. See the 

Installing your VCCS300 product section in the user manual. 

 

 

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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