Adjustable DC constant current and constant voltage switching power supply

Product Introduction
The NH series adjustable voltage and constant current switching power supply adopts the technology of switching power supply without power frequency transformer, advanced switching power supply control technology and components, and careful design. The whole machine is small in size, light in weight, and high in efficiency, ensuring stable and reliable long-term full load operation.
This product is widely used in power DC screen systems, industrial control, communication, scientific research, aging testing, electroplating electrolysis, battery charging and other equipment.
Main Features
☆ Wide range of AC input voltage, can be used for 220Vac or 380Vac input, and can be customized for DC input.
The voltage regulation value and constant current value are continuously adjustable within the range of (0-100)% of the maximum value.
The digital display head shows voltage and current.
☆ Temperature controlled fan, automatic overheating protection; Output overvoltage, overcurrent, and short-circuit protection; Power on delay soft start to avoid output voltage overshoot during startup.
☆ Can provide 2 sets of 0-5V (or 0-10V, 4-20mA) analog signal interfaces to regulate the output voltage and constant current values.(Optional)
☆ Can provide 1 set of 0V/5V switch signal interface to control output and standby.(Optional)
☆ It can provide two sets of 0-5V (or 0-10V) analog signal interfaces to read back the output voltage and constant current values.(Optional)
Multiple current sharing machines can be used in parallel.(Optional)
Technical Specifications

test project	performance parameters
Range of input voltage for communication	Single phase AC220V ± 15%, 50/60Hz (can be customized with three-phase AC380V ± 10% or DC230-330V input)
Adjustable output range	Voltage regulation value (0-100)% Vdc; Constant current value (0-100)% A
Source voltage regulation rate	Voltage stabilization ≤ 0.5%
Load Regulation	Voltage stabilization ≤ 1%; Constant current ≤ 2%
Ripple	≤3%
Ambient Temperature	(-5～45)℃
overall efficiency	≥86%
digital display	Output voltage display accuracy ± 1.5%; Output current display accuracy ± 2.0%
adjustment method	Knob potentiometer adjustment (optional analog signal external control)
insulation resistance	Input output: ≥ 20M Ω
	Input - chassis: ≥ 20M Ω
	Output - chassis: ≥ 80M Ω
Dielectric Strength	Input output: AC1500V, 10mA, 1 minute
	Input - Chassis: AC1500V, 10mA, 1 minute
	Output - Chassis: AC1500V, 10mA, 1 minute
Overheating protection temperature threshold	(70～80)℃
cooling method	Fan cooling