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XL020, XL025, XL030, XL035
40kV to 70kV 100W X-RAY
Power Supplies with Floating Heater
High Voltage Section in OIL
Features
- Bipolar High Voltage Section
- High Voltage Section mounts next to X-ray tube
- Heater isolated to 35 kV 5V at 3 Amp
- Short circuit and flashover proof
- High efficiency, 24 hour burn in
- Safety assessed to EN61010-1
- Beam Current Control, stabilised by heater current.
- Controlled turn-on. Minimises turn-on stress to tube and filament.
- Stand-by Heater Current, set by internal potentiometer. 0-100%
- Maximum Heater Current, set by internal potentiometer. 0-100%
- Please contact the factory for special versions of this power supply.
- LED Fault Diagnostics
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The XL series is based on the HW, and XF series. It includes a 100W bipolar acceleration supply, and an isolated filament supply whose power is controlled to stabilise the beam current . It is intended to operated an X-ray tube in bipolar mode which minimises the voltage potentials with respect to Ground. The High Voltage section being mounted in the oil tank adjacent to the X-ray tube, eliminates the need for high voltage connectors. Control of the output voltage & current is by internal potentiometers or by external 10 volt analogue control voltages. All units are short circuit proof and use high frequency pulse width modulated switching techniques, in conjunction with a ferrite step-up transformer to control the output voltage.
Electrical Specification
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UNIT TYPE
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OUTPUT VOLTAGE
Bipolar - +ve & -ve
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O/P RIPPLE
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FILAMENT |
| XL020BIP404 |
2.5kV to 20kV at 2.5mA |
<1%
peak to peak |
4A @ 4V AC
Connected to HV -ve |
| XL025BIP404 |
3kV to 25kV at 2mA |
| XL030BIP404 |
3.5kV to 30kV at 1.6mA |
| XL035BIP404 |
4kV to 35kV at 1.4mA |
We manufacture a large number of customized OEM versions of this PSU, and would be pleased to discuss your application with you.
| INPUT VOLTAGE: |
24 volt d.c. ±10% at 8A.
Negative input terminal common to HV earth return. |
| HV LINE REGULATION: |
Less than 0.1% for input changes of 1 volt. |
| VOLTAGE CONTROL: |
INTERNAL potentiometer or 10V analogue signal.
(0 to +10V gives zero to max kV output ±5%.).
Input impedance > 10 kohm. |
| BEAM CURRENT CONTROL: (BEAM CURRENT STABILISED.) |
INTERNAL potentiometer or 10V analogue signal.
(0 to +10V gives 0 to full o/p.
Input impedance > 10 kohm. |
| MONITORS:than 0.1% for load changes from |
Voltage 0 to +10V represents zero to max kV
(Accuracy ±3%, source resistance 10 kohm.)
Current 0 to +10V represents zero to max o/p current
(Accuracy ±5%, source resistance 10 kohm.)
Filament 0 to +10V represents zero to 3 Amps
(Accuracy ±10%, source resistance 10 kohm.) |
| LOAD REGULATION: |
Less than 0.1% for load changes from 10% to maximum.
(Measured at maximum voltage). |
| ON/OFF: |
Output voltage and heater slow rise to set levels when control pin is low (<1.5V).
This also resets the trips. |
| OVERLOAD PROTECTION: |
Flashover and short circuit proof.
Trip on over current (both HV & heater turn off) reset by on/off. |
| TEMPERATURE CO-EFFICIENT: |
300ppm per °C. |
| OPERATING TEMPERATURE: |
0°C to +45°C. Over temperature cut out. |
| STORAGE TEMPERATURE: |
-35°C to +85°C. |
| R.F.I.: |
Choke input filter. Steel case for low radiated magnetic field. |
| SAFETY: |
Meets or exceeds requirements of EN61010-1. |
Mechanical Specification
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| SIZE: |
HV In Oil Tank |
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Low Voltage Plate |
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| 260 x 125 x 80 mm. |
| 300 x 120 x 48 mm. |
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OUTPUT:
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By three 200mm 60kV cables. |
| POWER INPUT CONNECTOR: |
| PCB Mounted Straight Header: Molex Part no 43160-2102 |
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Mates with Molex Part no 44441-2002 - RS part no 363-9875 |
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Fitted with crimped terminals 43375-1001 - RS part no 364-0055 |
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| CONTROL INPUT CONNECTOR: |
CONNECTORKITXF |
LED Status Indication
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| UNIT ENABLED: |
Green |
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LOW KV [<75% of demand]
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| LOW ma [<75% of demand] |
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| OVERCURRENT [>110% of Max] |
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| OVER TEMPERATURE |
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