Custom 1000A AC to DC Power Supply Manufacturers, Suppliers

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Custom 1000A AC to DC Power Supply Manufacturers, Suppliers

In modern electronic devices and energy systems, AC-to-DC power supplies play a crucial role. By converting alternating current (AC) to direct current (DC), they provide stable power for various DC loads and support charging needs in fields such as electric vehicles and energy storage systems. From smart homes to industrial automation, from medical equipment to new energy vehicles, AC-to-DC technology has become the bridge connecting the power grid to end devices, driving innovation in energy utilization methods.

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Product Description

The core function of an AC-to-DC power supply is to convert mains power (such as 380V/50Hz AC) into stable DC power required by equipment through processes including rectification, filtering, and voltage regulation.

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Input Filtering & Protection

The AC power first passes through the input filter circuit to eliminate high-frequency noise and electromagnetic interference (EMI). Simultaneously, components such as varistors and fuses provide surge protection and overcurrent protection.

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Rectifier Circuit

The rectifier stage converts alternating current into pulsating direct current. Bridge rectifier circuits have become the mainstream choice due to their high efficiency and low ripple. Both positive and negative half-cycles of the AC input are converted into unidirectional current.

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Filtering & Stabilization

Filtering circuits utilize components such as capacitors and inductors to smooth pulsating DC and reduce ripple, ensuring a clean output for sensitive electronic components.

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Control & Protection

Modern AC-to-DC power supplies integrate intelligent control chips to provide multiple protections against overvoltage, overcurrent, short circuits, and overheating.

Category	Name	Parameter
Environmental conditions	Operation temperature	-40°C ~ +75°C, derating is require when the temperature is above 55°C.
	Storage temperature	-40°C ~ +70°C
	Relative humidity	≤95%RH, without condensation
	Cooling mode	Forced air cooling
	Altitude	2,000 m a.s.l., derating is require when the altitude is above 2,000 m a.s.l.
	Atmospheric pressure	79 kPa ~ 106 kPa
AC input	Input system	Three phases + PE
	Rated voltage	380 Vac
	Voltage range	320 Vac ~ 450Vac
	Maximum current	640A
	Rated frequency	50Hz/60Hz
DC output	Voltage range	50~750V
	Current range	1~1000A
	Rated current	1000A @ 400V (750V is 533A)
	Steady voltage precision	< ±0.5%
	Steady current precision	≤ ±1% (rated range of 20% ~ 100% for output load)
	Load regulation rate	≤ ±0.5%
	Startup overshoot	≤ ±3%
	Peak-to-peak value noise	≤ 1% (50~750V, 0~20MHz)
Power factor and THD	Power factor	≥0.95 (Full-load @20%~50%)
		≥0.98 (Full-load @50%~100%)
		≥0.99 (Full-load @100% nominal voltage)
	THD	≤5% (Full-load output @50%~100%)
Efficiency	Under Rated input voltage	≥95.2% (@750V, 50%~100% load)

Frequently Asked Questions

Q1: What is the operating temperature range for this power supply?

A: The unit operates from -40°C to +75°C. Please note that derating is required when the temperature exceeds 55°C to ensure system stability.

Q2: Does this system support high-altitude installations?

A: Yes, it supports installations up to 2,000 meters above sea level. For altitudes exceeding this limit, power derating must be applied.

Q3: What protection mechanisms are included for safety?

A: The power supply integrates intelligent control for overvoltage, overcurrent, short circuit, and overheating protection, alongside input surge protection.

Q4: What is the peak efficiency of the AC-to-DC conversion?

A: Under rated input voltage and a load of 50% to 100% at 750V, the efficiency reaches ≥95.2%.

Q5: How is the unit cooled?

A: The system utilizes a forced air cooling mode to maintain optimal operating temperatures even under high-load conditions.

Q6: What is the input voltage requirement?

A: It requires a three-phase AC input with a rated voltage of 380 Vac and a frequency range of 50Hz/60Hz.