January 15, 2024

48 Volt 150 Watt DIN Rail Backup Power Supplies

48 volt 150 watt power supply with battery backup

The PST-SP48-150 series of battery back up power supplies consist of a universal input (90 to 265 volts AC, 47 to 63 Hz, or 130 to 375VDC) 48 volt power supply with a DC Battery Backup feature and switch. It can charge any 48 volt SLA, gel cell, VRLA, or AGM lead acid battery and instantly switch over to battery power upon power failure with zero crossover time. These power supplies can be used with or without the battery as convenient DIN rail mount power supplies. The charge rate depends on the exact voltage that the power supply is set for, but can be up to 3A minus the load current.

12 volt and 24 volt DC UPS battery back up switching power supply

12V and 24V Volt Battery Backup Power Supply and DC UPS

24V 150w Din rail mount battery backup power supply

150 Watt 24V version

The battery voltage is not regulated, and the output during AC operation is the same as the battery charge voltage so the 48 volt system will vary from about 55 to 40 volts during battery operation. If battery back-up is not required there is pot for adjusting the power which is accessible from the front panel.

These units can also be used as high voltage input DC/DC converters with battery backup. The input voltage can be DC instead of AC if the supply voltage is between 130 to 375 VDC.

PST-SP48-150

48 volt, 150 Watt

Quantity	1-9	10-99	100-199	200
	$147	$128	$110	$98

MODEL	PST-SP48-150
VOLTAGE	48V adjustable between 43.2 Volts and 56 Volts
VOLTAGE WHEN USED WITH BATTERY BACKUP FUNCTION	User must adjust the output voltage to 52 to 55.2 volts to ensure battery charging
VOLTAGE DURING BATTERY OPERATION	52 volts to 40volts
Low Voltage Battery Cutoff?	No
CURRENT	3A
CROSSOVER TIME	zero crossover time
Connections	Screw terminals, output on the top and input on the bottom
Screw terminal torque values	0.4-0.5 N-m
DIMENSIONS	71mm x 132mm x 117mm
WEIGHT	1000 grams, 2.2 lbs
INPUT VOLTAGE	90-265VAC or 130 - 375 VDC
SUPPLY FREQUENCY	47-63HZ
OUTPUT VOLTAGE TOLERANCE	±1%
MAX RIPPLE&NOISE	<80mV PP
SWITCHING FREQUENCY	~130kHz
OPERATION TEMP	-15~+70°C, derate 50% over 45°C
PROTECTIONS	Short circuit, over temperature, output overvoltage,
EFFICIENCY	>91% typical
POWER FACTOR	99% typical
BATTERY CHARGE CURRENT	See table below
Certificates	None at present
Use DIN-rails according to EN60715 or EN50022 with a height of 7.5 or 15mm
ROHS	ROHS available on special order
Overcurrent protection	The power supply will continue to supply power up to 140% of rated current and then will go into "hiccough" mode, turning on briefly to check if the current is too high, then turn off again. During the "off" phase of the hiccough battery power is present.
LED Indicator	LED is on when DC output is present

Universal input AC/DC switching power supply with DC UPS
DC Battery Backup, charges 48 volt lead acid battery and switches over to battery power upon power failure with zero crossover time
During Power Failure the battery voltage passes through without regulation
Output Voltage adjustment
Over Temperature Protection
Natural convection cooling, no fan
Over Current protection
High efficiency switching power supply with universal input and battery back up
The battery is external and can be sized to meet your backup needs
The battery is not included in the price, but can be obtained from PowerStream
Soft start

Mounting drawing of the PST-SP48-150 48V battery backup power supply

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2 volt battery back up DC UPS, 24 volt battery back up DC UPS. Battery back up, Battery backup switchmode AC/DC power supply with universal input.

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