PSW 40-54 Programmable Switching D.C. Power Supply

Key Features

Output range 0–40 V / 0–54 A / 720 W
High-efficiency switching technology
Programmable voltage, current, and power settings
Constant Voltage (CV) and Constant Current (CC) modes
Built-in over-voltage, over-current, and over-temperature protection
Digital interface for remote control and automation
Compact design with intuitive user interface
Ideal for R&D, testing, and production environments

The PSW 40-54 Programmable Switching DC Power Supply is a high-performance, versatile power source designed to meet the demands of both laboratory and industrial applications. Offering a wide output range from 0 V to 40 V and a robust current capacity of 0 A to 54 A, this power supply can deliver up to 720 W of power, making it ideal for powering sensitive electronic devices, high-current systems, and prototyping projects. Featuring advanced switching technology, it ensures efficient energy conversion with minimal heat dissipation, while its programmable control allows precise adjustments to voltage, current, and power settings, which can be controlled via digital interfaces for automated testing or remote operation. The unit also includes comprehensive protection features such as over-voltage, over-current, and thermal overload safeguards to ensure safe and reliable operation. Perfect for R&D, battery charging, automated test setups, and production line testing, the PSW 40-54 is designed for precision, stability, and flexibility in a wide range of testing and development environments.

PSW-Series Specifications

The specifications apply when the PSW-Series is powered on for at least 30 minutes under +20°C~+30°C.

PSW-360W
Model		PSW	30-36	40-27	80-13.5	160-7.2	250-4.5	800-1.44
Rated Output Voltage		V	30	40	80	160	250	800
Rated Output Current		A	36	27	13.5	7.2	4.5	1.44
Rated Output Power		W	360	360	360	360	360	360
Power Ratio		—	3	3	3	3.2	3.125	3.2
Constant Voltage Mode		PSW	30-36	40-27	80-13.5	160-7.2	250-4.5	800-1.44
Line Regulation (*1)		mV	18	23	43	83	128	403
Load Regulation (*2)		mV	20	25	45	85	130	405
Ripple and Noise (*3)
	p-p (*4)	mV	60	60	60	60	80	150
	r.m.s (*5)	mV	7	7	7	12	15	30
Temperature coefficient		ppm/°C	100ppm/°C of rated output voltage, after a 30 minute warm-up.
Remote sense compensation voltage		V/wire	0.6	0.6	0.6	0.6	1	1
Rise Time (*6)
	Rated Load	ms	50	50	50	100	100	150
	No Load	ms	50	50	50	100	100	150
Fall Time (*7)
	Rated Load	ms	50	50	50	100	150	300
	No Load	ms	500	500	500	1000	1200	2000
Transient response time (*8)		ms	1	1	1	2	2	2
Constant Current Mode		PSW	30-36	40-27	80-13.5	160-7.2	250-4.5	800-1.44
Line regulation (*1)		mA	41	32	18.5	12.2	9.5	6.44
Load regulation (*9)		mA	41	32	18.5	12.2	9.5	6.44
Ripple and noise
	r.m.s (*5 )	mA	72	54	27	15	10	5
Temperature coefficient		ppm/°C	200ppm/°C of rated output current, after a 30 minute warm-up.
Protection Function		PSW	30-36	40-27	80-13.5	160-7.2	250-4.5	800-1.44
Over voltage protection (OVP)
	Setting range	V	3-33	4-44	8-88	16-176	20-275	20-880
	Setting accuracy		± (2% of rated output voltage)
Over current protection (OCP)
	Setting range	A	3.6-39.6	2.7-29.7	1.35-14.85	0.72-7.92	0.45-4.95	0.144-1.584
	Setting accuracy		± (2% of rated output current)
Over temperature protection (OTP)
	Operation		Turn the output off.
Low AC input protection (AC-FAIL)
	Operation		Turn the output off.
Power limit (POWER LIMIT)
	Operation		Over power limit.
	Value (fixed)		Approx. 105% of rated output power
Front Panel		PSW	30-36	40-27	80-13.5	160-7.2	250-4.5	800-1.44
Display, 4 digits
	Voltage accuracy 0.1% +	mV	20	20	20	100	200	400
	Current accuracy 0.1% +	mA	40	30	20	5	5	2
Programming and Measurement (Interface)		PSW	30-36	40-27	80-13.5	160-7.2	250-4.5	800-1.44
Voltage programming accuracy 0.1% +		mV	10	10	10	100	200	400
Current programming accuracy 0.1% +		mA	30	20	10	5	5	2
Voltage programming resolution		mV	1	1	2	3	5	14
Current programming resolution		mA	1	1	1	1	1	1
Voltage measurement accuracy 0.1% +		mV	10	10	10	100	200	400
Current measurement accuracy 0.1% +		mA	30	20	10	5	5	2
Voltage measurement resolution		mV	1	1	2	3	5	14

Current measurement resolution		mA	1	1	1	1	1	1

PSW-720W
Model		PSW	30-72	40-54	80-27	160-14.4	250-9	800-2.88
Rated Output Voltage		V	30	40	80	160	250	800
Rated Output Current		A	72	54	27	14.4	9	2.88
Rated Output Power		W	720	720	720	720	720	720
Power Ratio		—	3	3	3	3.2	3.125	3.2
Constant Voltage Mode		PSW	30-72	40-54	80-27	160-14.4	250-9	800-2.88
Line Regulation (*1)		mV	18	23	43	83	128	403
Load Regulation (*2)		mV	20	25	45	85	130	405
Ripple and Noise (*3)
	p-p (*4)	mV	80	80	80	80	100	200
	r.m.s (*5)	mV	11	11	11	15	15	30
Temperature coefficient		ppm/°C	100ppm/°C of rated output voltage, after a 30 minute warm-up.
Remote sense compensation voltage		V/wire	0.6	0.6	0.6	0.6	1	1
Rise Time (*6)
	Rated Load	ms	50	50	50	100	100	150
	No Load	ms	50	50	50	100	100	150
Fall Time (*7)
	Rated Load	ms	50	50	50	100	150	300
	No Load	ms	500	500	500	1000	1200	2000
Transient response time (*8)		ms	1	1	1	2	2	2
Constant Current Mode		PSW	30-72	40-54	80-27	160-14.4	250-9	800-2.88
Line regulation (*1)		mA	77	59	32	19.4	14	7.88
Load regulation (*9)		mA	77	59	32	19.4	14	7.88
Ripple and noise
	r.m.s (*5 )	mA	144	108	54	30	20	10
Temperature coefficient		ppm/°C	200ppm/°C of rated output current, after a 30 minute warm -up.
Protection Function		PSW	30-72	40-54	80-27	160-14.4	250-9	800-2.88
Over voltage protection (OVP)
	Setting range	V	3-33	4-44	8-88	16-176	20-275	20-880
	Setting accuracy		± (2% of rated output voltage)
Over current protection (OCP)
	Setting range	A	5-79.2	5-59.4	2.7-29.7	1.44-15.84	0.9-9.9	0.288-3.168
	Setting accuracy		± (2% of rated output current)
Over temperature protection (OTP)
	Operation		Turn the output off.
Low AC input protection (AC-FAIL)
	Operation		Turn the output off.
Power limit (POWER LIMIT)
	Operation		Over power limit.
	Value (fixed)		Approx. 105% of rated output power
Front Panel		PSW	30-72	40-54	80-27	160-14.4	250-9	800-2.88
Display, 4 digits
	Voltage accuracy 0.1% +	mV	20	20	20	100	200	400
	Current accuracy 0.1% +	mA	70	60	40	30	10	4
Programming and Measurement (Interface)		PSW	30-72	40-54	80-27	160-14.4	250-9	800-2.88
Voltage programming accuracy 0.1% +		mV	10	10	10	100	200	400
Current programming accuracy 0.1% +		mA	60	50	30	15	10	4
Voltage programming resolution		mV	1	1	2	3	5	14
Current programming resolution		mA	2	2	2	2	1	1
Voltage measurement accuracy 0.1% +		mV	10	10	10	100	200	400

Current measurement accuracy 0.1% +		mA	60	50	30	15	10	4
Voltage measurement resolution		mV	1	1	2	3	5	14
Current measurement resolution		mA	2	2	2	2	1	1

PSW-1080W
Model		PSW	30-108	40-81	80-40.5	160-21.6	250-13.5	800-4.32
Rated Output Voltage		V	30	40	80	160	250	800
Rated Output Current		A	108	81	40.5	21.6	13.5	4.32
Rated Output Power		W	1080	1080	1080	1080	1080	1080
Power Ratio		—	3	3	3	3.2	3.125	3.2
Constant Voltage Mode		PSW	30-108	40-81	80-40.5	160-21.6	250-13.5	800-4.32
Line Regulation (*1)		mV	18	23	43	83	128	403
Load Regulation (*2)		mV	20	25	45	85	130	405
Ripple and Noise (*3)
	p-p (*4)	mV	100	100	100	100	120	200
	r.m.s (*5)	mV	14	14	14	20	15	30
Temperature coefficient		ppm/°C	100ppm/°C of ra ted output voltage, after a 30 minute warm-up.
Remote sense compensation voltage		V/wire	0.6	0.6	0.6	0.6	1	1
Rise Time (*6)
	Rated Load	ms	50	50	50	100	100	150
	No Load	ms	50	50	50	100	100	150
Fall Time (*7)
	Rated Load	ms	50	50	50	100	150	300
	No Load	ms	500	500	500	1000	1200	2000
Transient response time (*8)		ms	1	1	1	2	2	2
Constant Current Mode		PSW	30-108	40-81	80-40.5	160-21.6	250-13.5	800-4.32
Line regulation (*1)		mA	113	86	45.5	26.6	18.5	9.32
Load regulation (*9)		mA	113	86	45.5	26.6	18.5	9.32
Ripple and noise
	r.m.s (*5 )	mA	216	162	81	45	30	15
Temperature coefficient		ppm/°C	200ppm/°C of rated output current, after a 30 minute warm-up.
Protection Function		PSW	30-108	40-81	80-40.5	160-21.6	250-13.5	800-4.32
Over voltage protection (OVP)
	Setting range	V	3-33	4-44	8-88	16-176	20-275	20-880
	Setting accuracy		± (2% of rated output voltage)
Over current protection (OCP)
	Setting range	A	5-118.8	5-89.1	4.05-44.55	2.16-23.76	1.35-14.85	0.432-4.752
	Setting accuracy		± (2% of rated output current)
Over temperature protection (OTP)
	Operation		Turn the output off.
Low AC input protection (AC-FAIL)
	Operation		Turn the output off.
Power limit (POWER LIMIT)
	Operation		Over power limit.
	Value (fixed)		Approx. 105% of rated output power
Front Panel		PSW	30-108	40-81	80-40.5	160-21.6	250-13.5	800-4.32
Display, 4 digits
	Voltage accuracy 0.1% +	mV	20	20	20	100	200	400
	Current accuracy 0.1% +	mA	100	80	50	30	20	6
Programming and Measurement (Interface)		PSW	30-108	40-81	80-40.5	160-21.6	250-13.5	800-4.32
Voltage programming accuracy 0.1% +		mV	10	10	10	100	200	400
Current programming accuracy 0.1% +		mA	100	80	40	20	15	6
Voltage programming resolution		mV	1	1	2	3	5	14

Current programming resolution		mA	3	3	3	3	1	1
Voltage measurement accuracy 0.1% +		mV	10	10	10	100	200	400
Current measurement accuracy 0.1% +		mA	100	80	40	20	15	6
Voltage measurement resolution		mV	1	1	2	3	5	14
Current measurement resolution		mA	3	3	3	3	1	1

Common Specification
Input Characteristics		PSW	30V	40V	80V	160V	250V	800V
Nominal input rating			100Vac to 240Vac, 50Hz to 60Hz, single phase
Input voltage range			85Vac ~ 265Vac
Input voltage range			47Hz ~ 63Hz
Maximum input current
	100Vac	A	360W: 5A, 720W: 10A, 1080W: 15A
	200Vac	A	360W: 2.5A, 720W: 5A, 1080W: 7.5A
Inrush current		A	< 25A for 360W, < 50A for 720W, < 75A for 1080W
Maximum input power		VA	360W: 500VA, 720W: 1000VA, 1080W: 1500VA
Power factor
	100Vac		0.99
	200Vac		0.97
Efficiency
	100Vac	%	77	78	78	79	79	80
	200Vac	%	79	80	80	81	81	82
Hold-up time			20ms or greater
Analog Programming and Monitoring		PSW	30V	40V	80V	160V	250V	800V
External voltage control output voltage			Accuracy and linearity: ±0.5% of rated output voltage.
External voltage control output current			Accuracy and linearity: ±1% of rated output current.
External resistor control output voltage			Accuracy and linearity: ±1.5% of rated output voltage.
External resistor control output current			Accuracy and linearity: ±1.5% of rated output current.
Output voltage monitor
	Accuracy	%	±1	±1	±1	±1	±2	±2
Output current monitor
	Accuracy	%	±1	±1	±1	±1	±2	±2
Shutdown control			Turns the output off with a LOW (0V to 0.5V) or short-circuit.
Output on/off control			Possible logic selections: Turn the output on using a LOW (0V to 0.5V) or short-circuit, turn the output off using a HIGH (4.5V to 5V) or open-circuit. Turn the output on using a HIGH (4.5V to 5V) or open-circuit, turn the output off using a LOW (0V to 0.5V) or short-circuit.
CV/CC/ALM/PWR ON/OUT ON indicator			Photocoupler open collector output; Maximum voltage 30V, maximum sink current 8mA.
Series and Parallel Capability		PSW	30V	40V	80V	160V	250V	800V
Parallel number		Units	3	3	3	3	3	3
Series Number		Units	2	2	2	2	None	None
Front Panel
Indications			GREEN LED’s: CV, CC, VSR, ISR, DLY, RMT, 20, 40, 60, 80, 100, %W, W, V, A RED LED’s: ALM
Buttons			Function, OVP/OCP, Set, Test, Lock/Local, PWR DSPL, Output
Knobs			Voltage, Current
USB port			Type A USB connector
Interface Capabilities
USB			TypeA: Host, TypeB: Slave, Speed: 1.1/2.0, USB Class: CDC(Communications Device Class)
LAN			MAC Address, DNS IP Address, User Password, Gateway IP Address, Instrument IP Address, Subnet Mask

GPIB		Optional: GUG-001 (GPIB to USB Adapter)
Environmental Conditions
Operating temperature		0˚C to 50˚C
Storage temperature		-25˚C to 70˚C
Operating humidity		20% to 85% RH; No condensation
Storage humidity		90% RH or less; No condensation
Altitude		Maximum 2000m
General Specifications
Weight (main unit only)	kg	Approx. 3kg for 360W, Approx. 5.3kg for 720W, Approx. 7.5kg for 1080W
Dimensions (WxHxD)	mm	360W: 71×124×350mm, 720W: 142×124×350mm, 1080W: 214×124×350mm
Cooling		Forced air cooling by internal fan.
EMC		Complies with the European EMC directive 2004/108 /EC for Class A test and measurement products.
Safety		Complies with the European Low Voltage Directive 2006 /95/EC and carries the CE-marking.
Withstand voltage		Between input and chassis: No abnormalities at 1500 Vac for 1 minute.
		Between input and output: No abnormalities at 3000 Vac for 1 minute.
		Between output and chassis: No abnormalities at 500 Vdc for 1 minute for 30V, 40V, 80V, 160V models.
		No abnormalities at 1500 Vdc for 1 minute for 250V, 800V models.
Insulation resistance		Between input and chassis: 500 Vdc, 100MΩ or more
		Between input and output: 500 Vdc, 100MΩ or more
		Between output and chassis: 500 Vdc, 100MΩ or more for 30V, 40V, 80V, 160V and 250V models.
		1000Vdc, 100MΩ or more for 800V models.

Notes

*1: At 85 ~ 132Vac or 170 ~ 265Vac, constant load.

*2: From No-load to Full-load, constant input voltage. Measured at the sensing point in Remote Sense.

*3: Measure with JEITA RC-9131B (1:1) probe

*4: Measurement frequency bandwidth is 10Hz to 20MHz.

*5: Measurement frequency bandwidth is 5Hz to 1MHz.

*6: From 10% to 90% of rated output voltage, with rated resistive load.

*7: From 90% to 10% of rated output voltage, with rated resistive load.

*8: Time for output voltage to recover within 0.1% + 10mV of its rated output for a load change from 50 to 100% of its rated output current.

*9: For load voltage change, equal to the unit voltage rating, constant input voltage.

Accessories

CD-ROM	x 1 (Programming Manual, User Manual)
Power Cord	x 1 (Region dependent)
GTL-123	Test Lead x 1 (for PSW 30 V / 40 V / 80 V / 160 V models)
GTL-240	USB Cable ”L” Type x 1
PSW-004	Basic Accessories Kit x 1 (for PSW 30 V / 40 V / 80 V / 160 V models)
PSW-008	Basic Accessories Kit x 1 (for PSW 250 V / 800 V models)
PSW-009	Output terminal cover (for PSW 30 V / 40 V / 80 V / 160 V models)
PSW-011	Output terminal cover (for PSW 250 V / 800 V models)
PSW-012	High voltage output terminal (for PSW 250 V / 800 V models)

Optional Accessories

PSW-001	Accessory Kit
PSW-002	Simple IDC Tool
PSW-003	Contact Removal Tool
PSW-005	Cable for 2 Units of PSW-Series in series mode connection (for PSW 30 V / 40 V / 80 V / 160 V models)
PSW-006	Cable for 2 Units of PSW-Series in parallel mode connection
PSW-007	Cable for 3 Units of PSW-Series in parallel mode connection
PSW-010	Large filter (for PSW 720 W / 1080 W models)
GUG-001	GPIB to USB Adaptor
GRA-410-J	Rack Mount Kit (JIS)
GRA-410-E	Rack Mount Kit (KIA)
GET-001	Extended Terminal with max. 30 A (for PSW 30 V / 40 V / 80 V / 160 V models)
GET-002	Extended Terminal with max. 10 A (for PSW 250 V / 800 V models)
GET-005	Extended European Terminal with max. 20 A (for PSW 30 V / 40 V / 80 V / 160 V models)
GTL-130	Test Lea: 2 x red, 2 x black (for PSW 250 V / 800 V models)
GTL-248	GPIB Cable, 2000 mm
GUR-001A	USB TO RS-232 Cable (M3), 3000 mm
GUR-001B	USB TO RS-232 Cable (#4-40 UNC), 3000 mm

PSW 40-54 Programmable Switching D.C. Power Supply