January 15, 2024

High Power low noise 48V Power Supply, 960 Watts

1340 watt power supply for marine and commercial audio use

line drawing of the high power low noise audio power supplies

Summary:Closed frame power supply, 48 volts, 960 Watts. Designed for low audio noise.

Suggested Applications: Wherever a high power 48 volt power supply is needed. These can also be placed in parallel for more power.

These power supplies feature regulated and filtered outputs which allow for clean audio demonstrations without the slightest hint of noise.
Their low profile design allows for convenient mounting under a display vehicle or behind a display board.
Virtually Silent Operation. All PST-DLS power supplies utilize an advanced switching design. There is no low frequency transformer hum. Every unit is equipped with a cooling fan that is virtually silent.
The PST-DLS power supplies feature thermal control circuitry that engages the fan only when internal temperatures require it (typically 75% of full load). They have small compact sizes compared to the transformer based power chargers. The switch mode technology utilized in DLS power supplies has up to 86% efficiency. This superior design results in cooler operating temperatures and compact size.

Summary table high power 48 volt Power supplies (full specifications are listed in the next table).
Model number	Continuous Amps	Input Voltage	Output Voltage	Output Watts	Weight	Dimensions	Mounting Drawing	AC Service Required	Price Quantity 1-9
PST-DLS-48-20 48V power supply	20A	108-132 VAC 47-63 Hz	48V ± 0.5%	960W	7.8 lbs	13 x 6.5 x 3.5 inches		1900VA	No longer available, sorry. For more 48V power supplies

* These are designed to exceed UL requirements.

Specifications:

Specifications
Parameter	Value
Output voltage 48 power supply	48V	48VDC
Output voltage tolerance	±0.5%	no load
Maximum ripple and noise	100 mV RMS
Input voltage rage	108-132 VAC
Input frequency	47-63Hz
Typical efficiency	>80%
Short circuit protection	Yes
Overload protection	Yes
Line regulation	<1%
Load regulation	<1%	at output terminals
Recommended output wire gauge	4 AWG
Output terminals	4 AWG screw terminals
Fan control	Proportional--	Fan only comes on when needed
Fan type	Special ultra low audio noise fan
Over temperature protection	80°C	Turns off
Ambient temperature	0°C to 40°C
Storage temperature	-20°C to 80°C
Warranty	2 Years

Usage Note: Typical AC outlets are 1540VA, 14 amp service. To run the higher power units you will need higher power service than is typically available in a wall plug. Please consult competent technical authorities to determine the total load on the circuit you intend to supply the power with, including other things plugged into the same circuit.

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