DC270V aviation DC power supply

Brief introduction
This series of products is a high-voltage DC power supply designed and manufactured by our company for the new generation of fighter jets and onboard equipment, based on a 28.5V DC power supply. Adopting module parallel redundancy design, high reliability, with
Strong load-bearing capacity, suitable for various loads.
2、 Applicable occasions
Mainly used for 270V power supply requirements in new generation fighter jets and onboard equipment, aircraft and equipment, etc., it can be used for DC power supply and modeling for aircraft start-up power supply, ground equipment maintenance, testing, production inspection, etc
Proposed testing scenario. The main users are aviation research institutes, military factories, military units, civil aviation companies, aviation maintenance companies and other customer groups.
3、 Execution standards
GJB181A-2003 Aircraft Power Supply Characteristics
GJB572A-2006 Aircraft External Power Supply Characteristics and General Requirements
QJ988-86 General Technical Conditions for Ground DC Power Supply
GJB150-2009 Military Equipment Laboratory Environmental Test Methods
GJB571A-1997 Requirements for Electromagnetic Emission and Sensitivity of Military Equipment and Subsystems
GJB572A-1997 Electromagnetic emission and sensitivity measurement of military equipment and subsystems
4、 Technical parameters
1. Improve protection functions to ensure the safety and stability of backend load operation;
2. Improve communication interfaces, connect in real-time with the upper computer, and achieve remote control and status monitoring;
3. Automatic compensation function for cable voltage drop;
4. High brightness LCD display, optimized human-machine dialogue interface, easy to operate;
5. Output cutoff function, which can adapt to the start-up requirements of impact loads;
6. Superior overload capacity design that can meet the working requirements of different loads;
7. Improved air duct design maximizes the potential of the air cooling system, improves power dissipation capacity, reduces heat loss, and extends product lifespan.
5、 Technical parameters

model		NHZDY270-10	NHZDY270-30	NHZDY270-50	NHZDY270-100
current level		10A	30A	50A	100A
volume	Width * Depth * Height (mm)	482*500*132	482*500*176	482*500*274	550 * 600 * 800 (including casters)
Input Technology indicator	phase number	Single phase+PE	Three phase three wire+PE
	voltage	220V±10％	380V±15％
	frequency	50Hz±5％
Output Technology indicator	rated voltage	270V
	Regulating Range	5-400V continuously adjustable
	Stable voltage stability	≤±0.5％FS
	Load stability	≤±0.5％
	Ripple (Vrms)	≤150mv（Vrms）	≤300mv（Vrms）
	overload capacity	105% ≤ I ≤ 125% 5S protection; I>125% immediate protection
	dynamic characteristics	The overshoot and recovery time meet the requirements of GJB572
	efficiency	≥85％
Protection	protection function	Input overvoltage, undervoltage, phase loss, output overvoltage, overload, short circuit, current interruption, internal overheating
Operation display	display mode	LCD panel, touch button operation
	Display content	Display voltage/current/operating status/fault information/control mode (local control/remote control)
	display precision	Voltage ± 1% FS, current ± 2% FS
Comprehensive characteristic	Impact resistance characteristics	Anti power grid has strong instantaneous fluctuation ability and can effectively simulate various interferences such as surges, subsidence, and spikes from the power grid
	noise	＜60dB
	Entry and exit methods	Back entry and exit line
environment	Temperature rating	Civilian grade: -5 ℃~40 ℃, Industrial grade: -25 ℃~50 ℃, Military grade: -40 ℃~55 ℃
	cooling system	Forced fan cooling
	Humidity during work and storage	30% RH-90% RH (no condensation)/10% RH-95% RH (no condensation)
Control Method	local control	LCD panel, touch button operation
	remote control	RS-232、RS-485、GPIB(可选其一)
reliability	MTBF	1.0×105h
	MTTR	0.5h
safety	Insulation reactance	500Vdc、20MΩ 以上
	耐压绝缘	1800Vdc/5mA/1min

The above products can be customized according to customer requirements.