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The CPX series is a new type of bench power supply designed to meet the need for flexibility in the choice of voltage and current. Today’s engineers often need a wide voltage range capability and a high current capability. Normally, however, the maximum voltage and maximum current are not required simultaneously. A conventional bench PSU has a fixed current limit giving a power capability that reduces directly with the output voltage.
The TTi PowerFlex design of the CPX series enables higher cur- rents to be generated at lower voltages within an overall power limit envelope. Each output can provide twice as much current as a conventional PSU of the same maximum voltage and power. This is achieved by using the latest switch-mode technology. Advanced techniques are used to achieve noise and RFI figures comparable with linear PSUs. As a result the CPX series can be used with confidence in sensitive environments.
The CPX series are dual output power supplies with two completely independent and isolated outputs. The outputs operate in constant voltage or constant current mode with automatic crossover and mode indication. Each out- put has its own on-off switch. If required, the outputs can be wired in series or parallel to achieve up to double the maximum voltage or double the maximum current.
The CPX series incorporates separate high resolution voltage and current meters for each output using large bright LED displays. Coarse and fine controls permit the output voltage to be set within 10mV. The current limit control is logarithmic to give good resolution at low current settings. When each output switch is set to ‘OFF’, the meters display the set levels. This enables voltage and current levels to be set accurately before connection to the load. Switchable remote sense terminals are provided to allow the effects of connection lead resistance to be eliminated.
Key Features |
PowerFlex design gives variable voltage and current combinations within a maximum power envelope |
PowerFlex or fixed-range operation plus custom limits |
Low output noise and good transient response |
True analogue controls with digital settings locking |
Constant voltage or constant current operation |
Independent outputs or isolated voltage tracking (dual) |
Safety binding-post terminals |
Duplicate terminals at rear on CPX400SA, SP & DP |
Selectable remote sensing |
4 digit fixed resolution meters |
Specifications | ||
CPX Series Dual Output DC Power Supply | ||
Model Overview | ||
Model | CPX400A | CPX200 |
Voltage Range | 0V to 60V | 0V to 35V |
Current Range | 0A to 20A | 0A to 10A |
Power Range | Up to 420W | Up to 175W - see PowerFlex power envelope graph |
Operating Mode | Constant voltage or constant current with automatic cross-over and mode indication | Constant voltage or constant current with automatic cross-over and mode indication |
OVP range | 10% to 110% of maximum output voltage | 10% to 110% of maximum output voltage |
Output impedance | Typically <5mW in constant voltage mode. Typically >5kW in constant current mode, (voltage limit at max.) | Typically <5mW in constant voltage mode. Typically >5kW in constant current mode, (voltage limit at max.) |
Temp. Coefficient | Typically <100ppm/oC | Typically <100ppm/oC |
AC Input | 110 to 240 volts ±10% 50/60Hz by factory option Installation Category II | 220 to 240 volts ±10% or 110 to 120 volts ±10% 50/60Hz, Installation Category II |
Power Consumption | 1200VA max | 600VA max |
Cooling | Rear discharge 'smart' fan | Fan-free convection cooling |
Operating Range . | +5oC to +40oC, 20% to 80% RH | +5oC to +40oC, 20% to 80% RH |
Storage Range | -40oC to + 70oC | -40oC to + 70oC |
Environmental | Indoor use at altitudes to 2000m, Pollution Degree 2. | Indoor use at altitudes to 2000m, Pollution Degree 2 |
Safety | Complies with EN61010-1 | Complies with EN61010-1 |
EMC | Complies with EN61326 | Complies with EN61326 |
Size | 210 x 130 x 350mm (WxHxD) half rack width x 3U height | 210 x 130 x 350mm (WxHxD) half rack width x 3U height |
Weight | 7kg (15lb) | 5kg (11lb) |