Laboratory Power Supply Products from TTi - Thurlby Thandar Instruments

 QPX1200 - Description and Specifications
  QPX1200 - 60 volts, 50 amps, 1200 watts

Bench or System, RS232 and USB interfaces

  Up to 60 volts and up to 50 amps maximum
  PowerFlex design gives variable voltage & current 
     combinations within a maximum power range.
  Higher current capability at lower voltages
  Linear final regulation provides very low output noise
  Setting by direct numeric entry or by spin wheel
  High setting resolution of 1mV in up to 60 volts
  Bench or rack mounting with front and rear terminals
  Analog, RS232, & USB interfaces standard

QPX1200  - 0 to 60V,  0 to 50A *

[* PowerFlex - max. voltage and current not available together - see graph]

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Unrivalled Flexibility

The QPX1200 offers users a level of flexibility that can not be achieved with conventional laboratory power supplies.

With a current capability of 20 amps at the maximum output of 60 volts, its PowerFlex design offers increasing output current with reducing output voltage. The QPX1200 can therefore perform the task of many different power supplies.

Example voltage/current combinations include 60V/20A, 48V/25A, 37.5V/30A, 26V/40A, and 20V/50A.

High precision

With setting controlled by an instrumentation quality 16 bit DAC, the QPX1200 offers high accuracy and stability.

Local setting can be done using either the numeric keypad or the spin-wheel, and setting resolution is 1mV in up to 60 volts.

Linear output stage for low noise

Mixed mode regulation with a linear output stage gives the QPX1200 exceptionally low output noise for a unit of this power, and ensures good transient response.

A wide range of interfaces

The QPX1200 has analog, RS-232 and USB interfaces as standard. An optional LAN (LXI) interfaces will be available later.

Bench or rack mounting

Unlike most higher power laboratory PSUs, the QPX1200 is equally suited to bench or rack-mount applications.

Output and sense terminals are provided on both the front and rear panels. The case has integral tilt feet, and a 3U rack mount is available as an option.

OUTPUT SPECIFICATIONS

Voltage Range:

0V to 60V.

Current Range:

0A to 50A.

Power Range:

Up to 1200W - see PowerFlex power envelope graph.

Operating Mode:

Constant voltage or constant current with automatic cross-over and mode indication.

Voltage Setting:

By floating point numeric entry or rotary jog wheel; resolution 1mV.

Current Setting:

By floating point numeric entry or rotary jog wheel; resolution 10mA.

Setting Accuracy:

Voltage - 0.1% ± 2mV. Current 0.3% ± 20mA

Setting Stores:

Up to 10 set-ups can be saved and recalled via the keyboard or remote interfaces.

Load regulation:

<0.01% + 5mV for a 90% load change.

Line regulation:

<0.01% + 5mV for a 10% line voltage change.

Ripple & Noise (20MHz bandwidth):

Typically <3mV rms, <20mV pk-pk, (Full power).

Transient Response:

<250µs to within 50mV of set level for 90% load change.

Temp. Coefficient:

Typically <100ppm/oC.

Output Protection:

Forward protection by OVP trip; maximum voltage 70V. Reverse protection by diode clamp for reverse currents up to 3A.

Protection Functions:



 

Power Limiter, over-voltage, over-current and temperature trips.
Over Voltage (OVP): Settable 2V to 65V in 0.1V steps
Over Current (OCP): Settable 2A to 55A in 0.1A steps
Over Temperature: Monitors internal temperature rise
Sense Error:Monitors the voltage between the remote sense terminals and output terminals

Status Indication:

Display indication of Output On, CV, CI, Power Limit, Over-voltage trip.

Output Switch:

Push switch operating electronic power control. LED indication of On state

Output Terminals:

Front and rear output and sense terminals. Safety terminals accepting 6mm wire diameter, 6mm plugs or 8mm spades at 50 Amps max, or 4mm plugs at 30 Amps max.

Sensing:

Selectable local or remote sensing.

METERING

Display Type:

 

Large dot-matrix black-on-white backlit LCD. 5 digit voltage meter and 4 digit current meter. Display of limits values, memory contents etc. Wide range of alpha-numeric messages. Limits settings can be displayed simultaneously with measurements.

Meter Resolutions:

Voltage: 1mV. Current: 10mA

Meter Accuracies:

Voltage: 0.1% of reading ± 2 digits Current: 0.3% of reading ± 2 digits

INTERFACES

Analog:

Quasi-analog (digitised). Voltage or current, 0 - 5V or 0 - 10V.

Digital:
 

All digital bus interfaces incorporate full control, readback and status reporting.
Bus Type Selection:From front panel (RS232/USB/LAN).

Setting Resolution:

Voltage - 1mV, Current 1mA.

Readback Resolution:

Voltage - 10mV, Current 10mA.

USB:

Standard USB harware connection.

RS-232:

Variable baud rate 19,200 max.

LAN (option):

Conforming to Ethernet standard and LXI-C

GENERAL

AC Input:

110V to 240V AC ±10%, 50/60Hz. Installation Category II.

Power Consumption:

1600VA max.

Cooling:

Silent convection cooling.

Operating Range:

+5oC to +40oC, 20% to 80%

RH. Storage Range:

-40oC to + 70oC.

Environmental:

Indoor use at <2000m, Pollution Degree 1.

Safety:

Complies with EN61010-1.

EMC:

Complies with EN50081-1 and EN50082-1.

Size:

350 x 130 x 413mm (WxHxD) (3U height) . (optional rack mounting kit available).

Weight:

9.2kg (20lb).
 Thurlby Thandar Instruments Ltd. operates a policy of continuous development and reserves the right to alter specifications 
 without prior notice.

Thurlby Thandar Instruments Limited
Glebe Road, Huntingdon, Cambridgeshire PE29 7DR United Kingdom
Tel: +44 1480 412451  Fax: +44 1480 450409  Web: www.tti-test.com  Email: sales@tti-test.com