Highway DC Remote Power Supply System (Local and Remote)

NegotiableUpdate on 05/07

Model

Nature of the Manufacturer: Producers

Product Category

Place of Origin

Online Consult

Overview

1. System Introduction: The NHD series DC remote power supply system is designed by Jinan Nenghua Electromechanical Equipment Co., Ltd. for monitoring and ETC toll collection equipment on highways, such as cameras, flashing lights, monitoring video transmission equipment, meteorological monitoring, toll collection systems, and information boards ..

Product Details

1. System Introduction:
The NHD series DC remote power supply system is developed by Jinan Nenghua Electromechanical Equipment Co., Ltd. to meet the special requirements of scattered distribution and high stability requirements of monitoring and ETC toll collection equipment (such as cameras, flashing lights, monitoring video transmission equipment, meteorological monitoring, toll systems, and information boards) on highways. It has the characteristics of high efficiency, high safety and reliability, and strong anti-interference ability.

This system mainly consists of three parts: NHDS series local end machine (power generator), NHDX series remote end machine (isolation converter), and transmission cable. The local end machine is installed in the power supply room of toll stations or service areas along the highway, the remote end machine is installed next to various outdoor monitoring equipment along the highway, and the transmission cable is installed along the highway between the local end machine and the remote end machine.

2. NHDS series central office computer (alias: power generator or upper computer)

System cabinet

Embedded parallel module

2-1. Product Introduction:
The NHDS series DC remote power supply station terminal machine is an intelligent station terminal boosting system developed by our company based on years of power development and operation experience to meet the remote power supply needs of communication products. This system is the core of the remote power supply system, capable of isolating and boosting the 220VAC/380VVAC local power supply to 0-1000VDC (AC/DC). It adopts advanced pulse width modulation (PWM) IGBT inverter technology, and adopts an AC-DC-AC circuit design structure internally. It is also equipped with a dedicated high-frequency isolation transformer to completely eliminate power grid interference. The output waveform is pure, with stable voltage and current functions, high accuracy, intelligence, high reliability, high efficiency, high power density, low electromagnetic interference and other characteristics.
2-2 Product Features:
--Adopting PWM power electronic conversion regulation technology;
--Protection functions such as input and output overvoltage, overheating, short circuit, power overlap, and strong current intrusion;
--Modular hot swappable structure, high power density, and support for N+M redundant parallel design;
--Both software and hardware adopt anti-interference design to improve anti-interference ability;
--Provide equipment self diagnostic function to facilitate equipment maintenance;
--Automatic power on function, no need to restart when receiving a call;
--Input/output configuration with lightning protection and surge protection;
--DC output suspension safety design ensures the safety of remote power supply effectively;
--Equipped with intelligent monitoring and management functions, fully Chinese LCD display, and user-friendly human-computer interaction interface;
--Equipped with remote control and communication interfaces for easy connection with computer control systems;

2-3. Technical parameters:

model	NHDS-5K	NHDS-7.5K	NHDS-10K	NHDS-15K	NHDS-20K	NHDS-25K	NHDS-30K	NHDS-50K
power	5KVA	7.5KVA	10KVA	15KVA	20KVA	25KVA	30KVA	50KVA
input voltage	220VAC 或380 VAC； 50/60HZ
output power	3KW-100KW
output voltage	0-1000VDC(可定制电压）
efficiency	95%
power factor	>0.95
display function	LCD/LED
protection function	Protection functions such as input overvoltage/undervoltage, output overvoltage, overtemperature, short circuit, no-load, leakage, power overlap, strong current intrusion, etc., and output undervoltage alarm
Working temperature (℃)	-40~75℃
Operating Humidity	0-95%, no condensation
noise	<50db
altitude	0～4500m
monitoring alarm	Provide fault dry contact, 485 communication port, with three remote functions
cooling method	Smart Air Cooling
Lightning protection performance	Lightning protection zone 1-2, nominal discharge current (8/20uS) 50kA; The response time is less than 1 μ S.
Monitoring function	Built in intelligent power distribution instruments enable real-time monitoring of equipment operation status.
communication function	RS485 or LAN optional

3. NHDX series remote machine (alias: isolation converter or lower computer)

floor-standing

Pole type

3-1 Product Introduction:
The NHDX series remote unit is a load side voltage reduction and stabilization device that converts high-voltage direct current into stable direct current (DC/DC) or alternating current (DC/AC). It has high reliability, high power density, small size, light weight, strong heat dissipation and anti-interference ability, and is suitable for various installation environments.
3-2 Performance Characteristics:
--Adopting SPWM/PWM power electronic conversion regulation technology;
--Equipped with lightning protection, overcurrent, overvoltage and overload protection functions;
--Both software and hardware adopt anti-interference design to improve anti-interference ability;
--Automatic power on function, no need to restart when receiving a call;
--Equipped with zero crossing start function when powered on;
--LED displays current and voltage;
--Equipped with remote control and communication interfaces for easy connection with computer control systems;
--All lines have undergone moisture-proof treatment, suitable for use in humid areas.
3-3 Technical indicators

model	NHDX-1K	NHDX-2K	NHDX-3K	NHDX-5K	NHDX-7.5K	NHDX-10K	NHDX-15K	NHDX-20K
power	1KVA	2KVA	3KVA	5KVA	7.5KVA	1KVA	15KVA	20KVA
input voltage	400~800VDC (suitable for local terminal voltage, customizable) and AC bypass (optional)
output voltage	220VAC/380VAC±1%（可选）
Output waveform	Communication sine wave, distortion<2%
output frequency	（50±0.2）Hz。
overload capacity	125% rated load, 10 minutes.
power factor	Output power factor:<0.9
efficiency	>95%
Measurement and control accuracy	≤1%
display	LED/LCD
protection function	Protection against overvoltage, overcurrent, short circuit, overheating, etc
Working temperature (℃)	-40-75℃
Operating Humidity	≤95%
cooling method	Self cooling or air-cooled
altitude	≤4500m
noise	<50db
Lightning protection performance	Lightning protection zone 1-2, nominal discharge current (8/20uS) 50kA; The response time is less than 1uS.
real-time monitoring	Built in intelligent power distribution instruments enable real-time monitoring of equipment operation status.
monitoring alarm	Alarm dry contact/RS485