GW-GSP550W-27 550W AC-DC Power Supply

CORE ADVANTAGES

550W 27V Enclosed AC-DC Power Supply for RF Systems, Broadcast Equipment, Microwave Links, and Specialized Control Platforms

The GW-GSP550W-27 provides a regulated 27V / 20.37A output with up to 550W of rated power , supporting RF amplifiers, broadcast transmitters, microwave communication equipment, specialized control systems, and other platforms requiring a stable high-current 27V DC rail.

550W High-Power 27V Output

Compact Enclosed Mechanical Design

Built in a durable 230 × 127 × 40.5 mm metal enclosure , the power supply can be integrated into communication racks, transmitter cabinets, industrial equipment, test systems, and custom electronic platforms where space efficiency and mechanical protection are important.

Universal 90–264Vac Input

The wide 90–264Vac input range allows the unit to operate across common international AC power systems without manual voltage selection, simplifying deployment in global equipment installations.

Stable 27V / 20.37A Power Delivery

The regulated 27V output supports communication modules, RF power stages, signal-processing equipment, microwave radios, broadcast electronics, and other loads that require consistent voltage under continuous operation.

Active PFC with Half-Bridge LLC Topology

Built-in active PFC with PF greater than 0.97 improves input power utilization, while the half-bridge LLC conversion architecture supports efficient power conversion, stable regulation, and reliable high-load operation.

Forced-Air Cooling and Remote Functions

An integrated DC fan supports sustained output under demanding thermal conditions. Remote ON/OFF, remote sensing, adjustable output voltage, low-ripple output, and short-circuit, overcurrent, overvoltage, and overtemperature protection enhance system-level reliability.

MODEL SELECTION

Compare Greatwall industrial power options.

Review nearby Greatwall models and select the output voltage, power level, and integration profile that best match the target system.

Model	Output Voltage	Rated Current	Rated Power	Best-Fit Application
GW-GSP550W-5	5Vdc	70A	350W	Semiconductor testing, embedded computing, LED processing, processor boards, and high-current 5V systems
GW-GSP550W-12	12Vdc	45.84A	550W	Industrial computers, surveillance equipment, robotic controllers, and high-power 12V platforms
GW-GSP550W-15	15Vdc	36.66A	550W	Laboratory instruments, imaging systems, automated test equipment, and dedicated 15V electronics
GW-GSP550W-24	24Vdc	22.92A	550W	PLC cabinets, industrial automation, process control, actuators, and machinery interfaces
GW-GSP550W-27	27Vdc	20.37A	550W	RF equipment, broadcast systems, microwave communication, and specialized 27V platforms
GW-GSP550W-48	48Vdc	11.46A	550W	Telecom equipment, industrial networking, edge communication, and distributed 48V systems

DEPLOYMENT SCENARIOS

Where GW-GSP550W-27 fits best.

The GW-GSP550W-27 is suitable for equipment built around a regulated 27V power architecture. Its high-current capability, active PFC, LLC conversion, remote sensing, and forced-air cooling support continuous operation in communication, broadcast, and specialized electronic systems.

Deployment Scenario	Application Description
RF Amplifier Systems	Powers RF power stages, signal-amplification modules, driver electronics, and supporting control circuits
Broadcast Transmitters	Supports transmitter control sections, modulation equipment, signal-processing modules, and auxiliary electronics
Microwave Communication Links	Supplies microwave radios, point-to-point communication equipment, outdoor link controllers, and interface modules
Specialized Control Platforms	Powers custom industrial controllers, communication control units, test systems, and proprietary 27V electronics
Communication Test Equipment	Supports RF test benches, signal generators, measurement platforms, and communication validation systems
Custom Electronic Systems	Integrates into equipment specifically designed around a high-current regulated 27V DC rail

POWER DESIGN

Reliability notes for continuous operation.

The GW-GSP550W-27 combines an active-PFC input stage with a half-bridge LLC conversion topology to produce a regulated 27V output from a universal AC source. At the maximum rated current of 20.37A, cable resistance, terminal contact quality, PCB copper capacity, connector selection, and load-side voltage drop should be evaluated carefully.

Remote sensing can compensate for voltage loss between the power supply and the connected load. The sensing wires should be routed separately from high-current conductors and noisy switching paths to maintain stable regulation.
Key reliability features include:
· Active PFC with PF greater than 0.97 and half-bridge LLC conversion
· Universal 90–264Vac input compatibility
· Up to 92.5% typical conversion efficiency
· Built-in DC fan for forced-air cooling
· Remote ON/OFF control with remote voltage sensing
· Low-ripple and low-noise regulated 27V output
· Adjustable output voltage with LED status indication
· Comprehensive SCP, OCP, OVP, and OTP protection
· 100% high-temperature burn-in, conformal-coated PCB, and operation support up to 5,000 meters

INSTALLATION

Installation and operating guidance.

Confirm electrical compatibility, thermal clearance, mechanical fit, and system load before integration.

Item	Installation Recommendation
AC Input	Confirm the live, neutral, and protective-earth terminals before applying power
Output Polarity	Verify the positive and negative 27V terminals before connecting the load
Cable Selection	Use short, low-resistance conductors rated for the full 20.37A output current
Terminal Tightening	Secure all terminals firmly to minimize contact resistance and localized heating
Voltage Drop	Measure the voltage directly at the load under normal operating current
Remote Sensing	Connect the sense lines correctly and route them away from high-noise wiring
Grounding	Connect the protective-earth terminal to a reliable equipment ground
Fan Clearance	Keep the fan intake and exhaust areas free from cables and structural obstructions
Installation Clearance	Maintain sufficient space around the enclosure for forced-air circulation
Output Adjustment	Use a calibrated multimeter and make only small voltage adjustments
Load Capacity	Keep the continuous load within the rated 550W and 20.37A limits
Maintenance	Disconnect AC power and allow stored energy to discharge before inspection

FAQ

Frequently asked questions about GW-GSP550W-27.

Key answers for specification matching, installation planning, and system integration.

What type of power supply is the GW-GSP550W-27?

The GW-GSP550W-27 is an enclosed AC-DC switching power supply with active PFC, half-bridge LLC conversion, built-in forced-air cooling, remote-control functions, and a regulated 27V output.

What are the dimensions of the GW-GSP550W-27?

Its external dimensions are approximately 230 × 127 × 40.5 mm.

What input-voltage range does it support?

It supports a universal AC input range of 90–264Vac.

What are its rated output voltage, current, and power?

The unit provides 27V DC, a maximum output current of 20.37A, and a rated output power of 550W.

Does the GW-GSP550W-27 support remote sensing?

Yes. Remote sensing helps compensate for voltage loss between the power supply and the connected load, which is especially useful in high-current installations.

Does it include remote ON/OFF control?

Yes. The output can be enabled or disabled through an external remote-control signal.

Does the power supply require forced-air cooling?

Yes. It includes a built-in DC fan, and the air intake and exhaust areas must remain unobstructed during operation.

What protection functions are included?

The GW-GSP550W-27 includes short-circuit, overcurrent, overvoltage, and overtemperature protection.

GW-GSP550W-27

Built for reliable, continuous power delivery.