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GW Instek PSW 40-27 - Multi-Range Programmable Switching D.C. Power Supply (0~40V/0~27A/360W)

Multi-Range Programmable Switching D.C. Power Supply (0~40V/0~27A/360W)

GW Instek

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Category : Power Supplies

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Brochure Datasheet

Overview
Features
Specifications
Calibration

The PSW 40-27 is a single output multi-range programmable switching DC Power Supply covering a power range up to 360W. The multi-range feature allows the flexible and efficient configuration of voltage and current within the rated power range. As the PSW 40-27 can be connected in parallel for maximum 3 units, the capability of connecting multiple PSW units for higher voltage or higher current output provides a broad coverage of applications. With the flexibility of multi-range power utilization and parallel connection, the PSW 40-27 significantly reduces the user’s investment for various power supply products to accommodate the projects with different power requirements.

The CV/CC priority selection of the PSW-Series is a very useful feature for DUT protection. The conventional power supply normally operates under CV mode when the power output is turned on. This could bring a high inrush current to the capacitive load or current-intensive load at the power output-on stage. Taking the I-V curve verification of LED as an example, it becomes a very challenging task to perform this measurement using a conventional power supply. With the LED connected to a power supply under CV mode as the initial setting, when the power output is turned on and the voltage rises to the LED forward voltage, the current will suddenly peak up and exceed the preset value of current limit. Upon detecting this high current, the power supply starts the transition from CV mode to CC mode. Though the current becomes stable after the CC mode is activated, the current spike occurred at the CV and CC crossover point may possibly damage the DUT. At the power output-on stage, the PSW-Series is able to run under CC priority to limit the current spike occurred at the threshold voltage and therefore protect DUT from the inrush current damage.

The PSW 250-4.5 provides USB Host / Device and LAN interfaces as standard and GPIB-USB optional. The LabView driver and the Data Logging PC software are supported on all the interfaces available. An analog control / monitoring connector is also available at the rear panel for external control of power on / off and external monitoring of power output Voltage and Current.

The adjustable slew rate of the PSW 250-4.5 allows the user to set for either output voltage or output current a specific rise time at the low to high level transition, and a specific fall time at the high to low level transition. This facilitates the characteristic verification of a DUT during voltage or current level changes with controllable slew rates. The manufacturing tests of lighting device or large capacitance capacitor during power output-on are mostly associated with the occurrence of high surge current, which can greatly reduce the lifetime of the DUT. To prevent inrush current from damaging current-intensive devices, a smooth and slow voltage transition during power on-off can significantly reduce the spike current and protect the device from high current damage.

The output on/off delay feature enables the setting of a specific time delay for output on and off. This is especially useful when multiple PSW units are used to generate various outputs with specific on/off time relations. This multiple-output control can be done through the Analog Control terminal at the rear panel or through the PC programming with standard commands.

PARALLEL OPERATION (3 UNITS)
MODEL SINGLE UNIT 2 UNITS 3 UNITS
PSW 30-36  30V/36A  30V/72A  30V/108A 
PSW 30-72  30V/72A  30V/144A  30V/216A 
PSW 30-108  30V/108A  30V/216A  30V/324A 
PSW 40-27  40V/27A  40V/54A  40V/81A 
PSW 40-54  40V/54A  40V/108A  40V/162A 
PSW 40-81  40V/81A  40V/162A  40V/243A 
PSW 80-13.5  80V/13.5A  80V/27A  80V/40.5A 
PSW 80-27  80V/27A  80V/54A  80V/81A 
PSW 80-40.5  80V/40.5A  80V/81A  80V/121.5A 
PSW 160-7.2  160V/7.2A  160V/14.4A  160V/21.6A 
PSW 160-14.4  160V/14.4A  160V/28.8A  160V/43.2A 
PSW 160-21.6  160V/21.6A  160V/43.2A  160V/64.8A 
PSW 250-4.5  250V/4.5A  250V/9A  250V/13.5A 
PSW 250-9  250V/9A  250V/18A  250V/27A 
PSW 250-13.5  250V/13.5A  250V/27A  250V/40.5A 
PSW 800-1.44  800V/1.44A  800V/2.88A  800V/4.32A 
PSW 800-2.88  800V/2.88A  800V/5.76A  800V/8.64A 
PSW 800-4.32  800V/4.32A  800V/8.64A  800V/12.96A 

 

SERIES OPERATION ( 2 UNITS )
MODEL SINGLE UNIT 2 UNITS
PSW 30-36  30V/36A  60V/36A 
PSW 30-72  30V/72A  60V/72A 
PSW 30-108  30V/108A  60V/108A 
PSW 40-27  40V/27A  80V/27A 
PSW 40-54  40V/54A  80V/54A 
PSW 40-81  40V/81A  80V/81A 
PSW 80-13.5  80V/13.5A  160V/13.5A 
PSW 80-27  80V/27A  160V/27A 
PSW 80-40.5  80V/40.5A  160V/40.5A 
PSW 160-7.2  160V/7.2A  320V/7.2A 
PSW 160-14.4  160V/14.4A  320V/14.4A 
PSW 160-21.6  160V/21.6A  320V/21.6A 
PSW 250-4.5  N/A  N/A 
PSW 250-9  N/A  N/A 
PSW 250-13.5  N/A  N/A 
PSW 800-1.44  N/A  N/A 
PSW 800-2.88  N/A  N/A 
PSW 800-4.32  N/A  N/A 
  • Voltage Rating: 40, Output Power: 360W
  • Constant Power Output for Multiple Range (V&I) Operation
  • CV/CC Priority; Particularly Suitable for the Battery and LED Industry
  • Adjustable Slew Rate
  • Parallel Operation (3 units in Parallel Maximum)
  • High Efficiency and High Power Density
  • 1/6 Rack Mount Size Design (EIA/JIS Standard)
  • Standard Interface: LAN,USB,Analog Control Interface, GPIB-USB
  • Adaptor(Optional)
  • Labview Driver

 

Model

Rated Output Voltage40V
Rated Output Current27A
Rated Output Power360W
Power Ratio3

 

Constant Voltage Mode

Line Regulation (*1)23mV
Load Regulation25mV
Ripple and Noise (*3)
p-p (*4)60mV
r.m.s (*5)7mV
Temperature coefficient100ppm/°C of rated output voltage, after a 30 minute warm-up.
Remote sense compensation voltage0.6 V/wire
Rise Time (*6)
Rated Load50ms
No Load50ms
Fall Time (*7)
Rated Load50ms
No Load500ms
Transient response time (*8)1ms

 

Constant Current Mode

Line regulation (*1) 32mA
Load regulation (*9) 32mA
Ripple and noise
r.m.s (*5 ) 54mA

 

Protection Function

Over voltage protection (OVP)
Setting range4-44
Setting accuracy ± (2% of rated output voltage)
Over current protection (OCP)
Setting range 2.7-29.7 A
Setting accuracy± (2% of rated output current)
Over temperature protection (OTP)
OperationTurn the output off.
Low AC input protection (AC-FAIL)
OperationTurn the output off.
Power limit (POWER LIMIT)
OperationOver power limit.
Value (fixed) Approx. 105% of rated output power

 

Front Panel

Display, 4 digits
Voltage accuracy 0.1% +20mV
Current accuracy 0.1% +30mA

 

Programming and Measurement (Interface)

Voltage programming accuracy 0.1% +10mV
Current programming accuracy 0.1% +20mA
Voltage programming resolution 1mV
Current programming resolution1mA
Voltage measurement accuracy 0.1% + 10mV
Current measurement accuracy 0.1% +20mA
Voltage measurement resolution1mV
Current measurement resolution1mA

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