High Voltage Power Supply
absolute relativeXMPF10N5/24
SAFETY AND INSTALLATION
INSTRUCTIONS
Document Number: 81234-4.
SAFETY
DANGER
HIGH VOLTAGE
RISK OF ELECTROCUTION
Observe extreme caution when working with this equipment
High voltage power supplies must always be connected to protective earth
Do not touch connections unless equipment is turned off and the capacitance of both the load and power supply are grounded
Allow adequate time for discharge of internal capacitance of the power supply
Do not ground yourself or work under wet or damp conditions
Servicing Safety
Maintenance may require removing the Instrument cover with the power on
Servicing should only be done by qualified personnel aware of the hazards
If in doubt, return to supplier for servicing
Change History
Contents
1Unit Description (4)
2Safety (4)
3Installation (4)
4Regulatory Specifications (5)
5Environmental conditions (5)
6Mechanical (6)
7Input and Output Connections (7)
1 Unit Description
The XMPF10N5/24 unit consists of one chassis containing the high voltage power supply.
The dimensions are 170mm x 70mm x 30mm
The unit is designed for operation from 24Vdc ± 10%. The maximum rated input current is 500mA.
The unit provides an HV Cathode output rated at -10kV, 5W. With a floating filament intended to drive an X-ray tube with a grounded anode, rated at 0V to 3.5Vac referenced to the Cathode Output, 0.42A max.
All control and monitoring is accomplished via a 15 way ‘D’ connector which also provides input power to the unit.
2 Safety
The HV output of the unit is hazardous and the conditions of this manual must be complied with to maintain safety. Operating the unit in a manner not specified in this manual may impair the protection against electric shock provided by the unit.
The unit is contained in an earthed case, the system protective earth shall be provided to the chassis. The case of the unit shall be properly bonded to the main protective earth termination in the end product.
The unit has been evaluated for use in a Pollution Degree 2, Installation Category II environment. Consideration should be given to conducting the following tests with the unit installed in the end product:
•Dielectric Voltage Withstand Test, between live parts of the unit and the end product chassis.
•Permissible Limits Tests with the unit installed in the end product.
•Temperatures on power electronic components, transformer windings and accessible surfaces. There is no relevance to a risk assessment carried out as part of the CE testing on the HV unit. It is r
ecommended that a full assessment is carried out in the end application.
This symbol on the unit means “read the manual before powering the equipment”.
This symbol on the unit means “Caution; risk of electric shock”.
3 Installation
3.1 Initial Inspection
Inspect the package exterior for evidence of damage due to handling in transit. Notify the carrier and Spellman immediately if damage is evident. Do not destroy or remove any of the packing material used in a damaged shipment.
After unpacking, inspect the panel and chassis for visible damage.
Note: Failure to comply with the above could compromise the safe operation of the unit and invalidate the warranty.
3.2 Mechanical Installation
The unit should only be used in a Pollution Degree 2 Installation Category II environment.
The input and output connectors are not intended for field connections and should only be connected to internal wiring in the end product. The unit is intended for use as a component and no surface of the unit should be accessible in the end product.
3.3 Electrical Installation
The unit must be terminated safely before operation. Hazardous voltages will be exposed if the connector is removed whilst the unit is enabled.
The 24Vdc input shall be provided by a double insulated, or SELV, UL recognised power supply.
Circuits connected to the unit shall be provided with rated insulation to IEC/UL61010-1.
The unit must be switched off for at least one minute before disconnecting any of the connectors.
4 Regulatory Specifications
The unit is designed to meet the requirements of EN 61010-1, UL 61010-1 and CAN/CSA-22.2 No. 61010-1. Please consult the factory for further approval information.
As the unit is designed for incorporation within the user’s system it is not tested against any specific EMC standards. The user will need to take sensible EMC precautions when designing the unit in and verify the overall system EMC performance against any relevant standards.
5 Environmental conditions
5.1 Operating
Protection: The power supply will be designed to meet IP40 and will be
reasonably protected against dust.
Temperature:  +5o C to +40o C.
Relative Humidity: 20% to 80% (no condensation)
5.2          Storage
Temperature:  -40o C to +70o C.
Relative humidity: 5% to 95%
Absolute humidity: maximum 25 gm-³
Maximum storage period: >0.25 year (at above conditions)
Long term storage: >3 year (special packaging required)

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