30KW series DC stabilized voltage and current switching power supply

NegotiableUpdate on 05/07

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Nature of the Manufacturer: Producers

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Overview

Product Introduction: The NHWY series switch type DC stabilized voltage and current power supply produced by Jinan Nenghua is a reliable and high-performance DC power supply for product research and development, product integration, product certification, production testing and aging, automated manufacturing testing, and process control applications

Product Details

Product Introduction

The NHWY series switch type DC stabilized voltage and current power supply produced by Jinan Nenghua is a reliable and high-performance DC power supply for product research and development, product integration, product certification, production testing and aging, automated manufacturing testing, and process control applications. The product adopts high-frequency PWM hardware adjustment soft switch control technology, with AC and DC compatible inputs and various protection functions. Adopting imported IGBT module power devices and full bridge conversion technology, with specific characteristics such as high efficiency, high precision, high stability, and small size, optimized for high efficiency in linear power supplies and silicon rectifier power supplies, the product can operate reliably for a long time and has strong overload capacity. alias:Adjustable switch power supply，adjustableDC regulated power supply, high powerDC regulated power supply, DCAdjustable voltage regulator power supplyDC power supply device,High power DC power supply
The NHWY series switch type DC stabilized voltage and current power supply has continuously adjustable voltage and current values from zero to the rated value, with automatic conversion between constant voltage and current. The protection points can be selected and limited within the rated range. Voltage and current are displayed digitally simultaneously. Built in temperature controlled cooling fan, which can effectively dissipate heat and extend the lifespan of the fan; The product has protection functions such as overvoltage, overcurrent, input phase loss, input undervoltage, input overvoltage, short circuit, overload, etc. Power on delay soft start to avoid output voltage overshoot during startup. The product can connect multiple units in parallel to achieve power expansion. The product control can be manually operated with knobs, buttons, computers, PLCs, and other options.
At present, the NHWY series switch type DC stabilized voltage and current power supply is widely used in industries such as power, industrial control, communication, scientific research, railways, automobiles, ships, battery charging, aerospace, surface treatment, electrochemistry, new energy, capacitors, motors, sewage treatment, electronic product production testing, LED lighting, heating, geological exploration, medical equipment (MRI), semiconductor equipment (MOCVD), vacuum coating equipment, etc. Many domestic enterprises and units have used NHWY series DC stabilized voltage and current power supplies for product testing and aging. In addition, many scientific research units, military electronics research institutes, aviation electrical appliances, non-ferrous metals and other units have used this power supply for high-precision and high-intensity scientific research work, which has been widely praised.

Product Features

1. Display: Output voltage and current LED display (LCD display can be added according to customer requirements);

2. Appearance: Adopting desktop, tower or 19 inch standardized sizes, supporting N+1 redundant expansion, can be combined and placed on various workbenches and racks;

3. Advantages: High frequency PWM hardware adjustmentsoft switchcontrol technologyMake the power supply highly efficient, with low ripple, low noise, and high reliabilitySmall size and light weight;

4. Constant voltage and constant current: Automatic switching of CC/CV constant voltage and constant current output, continuous linear adjustment of voltage and current values from zero to rated value;

5. Protection functions: Overvoltage Protection (OVP), Overcurrent Protection (OCP), Over Temperature Protection (OTP), Undervoltage Protection, Overload Protection;

6. Short circuit characteristics: can short-circuit for a long time under working conditions;

7. External compensation: Remote Sensing is optional to reduce the voltage drop of circuit cables;

8. Overvoltage protection value: The output overvoltage protection value is adjustable. After protection, the output is cut off and locked, and it can be restored after restarting;

9. Current preset function: Users can preset any current required by the load without connecting it. When the product actually has current output, the maximum actual output current can reach the preset value (optional).

10. Voltage preset function: Users can preset any voltage actually required by the load without output voltage. When the product actually has voltage output, the maximum actual output voltage can reach the pre-set value.(Optional)

11. Overvoltage preset function: The overvoltage protection value of the power supply can be preset on the panel, that is, by holding down the overvoltage preset button on the panel and adjusting the overvoltage potentiometer, the actual required overvoltage protection value can be obtained.(Optional)

12. Computer programming function: optional RS485/RS232/GPIB/LAN/CAN data interfaces, standard Modbus or Can2.0 communication protocols, configurable computer/upper computer software control and monitoring. Multiple networking controls are available, with master-slave parallel control. (Optional)

13. PLC remote sampling: optional (isolated/non isolated) 0-5V, 0-10V, 4-20mA PLC analog signal control power supply voltage and current control and feedback; Switching signal and high/lowLevel signal switch;(Optional)

14. Programming storage function: It can execute 30 sets of different voltage, current, delay time, and running time settings at once, and can cycle continuously 999999 times; 10 memory groupsparameter storageEasy to call.(Optional)

15. Timer function: optional timed power on/off function, timed operation or cyclic permission; (Optional)
16. Positive and negative commutation function: can provide output positive and negative commutation function (bipolar), commutation methods: manual, timed, computer-controlled, etc; (Optional)
17. Pulse function: Install a chopper circuit on the basic circuit of a conventional DC power supply to achieve independent and adjustable voltage, current, frequency, and duty cycle; Capable of single pulse, periodic commutation pulse, positive and negative dual pulse, etc(Optional)
18. Install an ammeter:The maximum setting range is 1-9999999 ampere minutes (if you want to use ampere hours as a unit, you can divide the setting value by 60); The accumulated value (AH) displayed is the cumulative value from the factory to the time of inspection.(Optional)

Product Application

1. Motor category: electric vehicle motors, electric vehicle controllers, DC motor testing, aging and debugging, etc
2. Electrical appliances: LED/LCD testing and aging, energy-saving bulb testing and aging, lighting fixture testing, tungsten wire gasification, etc
3. Automotive category: starter motor, automotive air conditioning, automotive motor controller, automotive lighting, cigarette lighter, automotive audio and video testing and aging, etc
4. Electronic components: capacitors, resistors, relays, transistors, sensors, etc
5. Display type: Display screen, liquid dispenser screen, touch screen, car DVD, mobile phone display, etc
6. Electrochemistry: electrolysis, electroplating, anodizing, non-ferrous metals, wastewater treatment, etc
7. Military aviation: aircraft start-up maintenance, power supply for military equipment, etc
8. Exploration category: Power supply for petroleum equipment and electrical instruments, etc
9. Power supply category: aging of inverter products, maintenance and testing of frequency converters, etc
10. Electric tools: contact aging, wire package testing, circuit breaker trip test, etc
11. New energy category: photovoltaic inverter testing, electric vehicle motor testing, lithium battery charging, etc
12. High end scientific research categories: magnetic field power supply, superconducting experiments, ion accelerators, etc;

working principle

The AC input first passes through the input filtering circuit (input filter), then is converted into DC through the rectification circuit, and enters the power inverter circuit through the input buffer circuit (suppression of voltage and current surge circuit). In this stage, input overvoltage, undervoltage protection and other circuits are added. When the AC input exceeds or falls below the rated input range or when the input is missing, the power inverter circuit is turned off. After passing through the power inverter circuit, the DC voltage is converted into a high-frequency AC voltage. The AC voltage is isolated and stepped down by a transformer to output a low-voltage AC voltage. After high-frequency rectification and filtering, a stable DC voltage is output to power the load. The main control circuit adjusts the working state of the inverter circuit switch by collecting input voltage and current signals, and outputs a stable DC voltage; Receive protection circuits, voltage regulation signals, and constant current setting signals to achieve protection and setting of the power supply; The collected output voltage, current value, and power supply working status signal are provided to the panel header and status indicator light for display.

Technical Specifications

Model Naming	NHWY - * * * - # # (NHWY represents Nenghua DC power supply, * * * represents output voltage, # # represents output current)
communication input	Below 15KW (single-phase 110V ± 10%, 220V ± 10%, or three-phase 380V ± 15%) 15KW or above (three-phase 380V ± 15%), frequency: 50-60Hz
DC output	Voltage (stabilized value CC): (0-100% rated value) V continuously adjustable Current (constant current value CV): (0-100% rated value) A continuously adjustable
Source voltage effect	≤ 0.2% effective value
Load effect	Voltage stabilization accuracy: ≤ 0.5% effective value(Resistive load) Constant current accuracy: ≤ 0.5% effective value(Resistive load)
Output ripple	Voltage stabilization state (CC): ≤ 0.3%+10mV (rms) (effective value)
	Steady current state (CV): ≤ 0.5%+10mA (rms) (effective value)
Output display	4 and a half digit table accuracy: ± 1%+1 word
	Display format 00.00V-19.99V; 000.0V-199.9V； 0000V-1999V；
Voltage and current setting	Multi turn potentiometer, button type, LCD touch screen (optional)
Overvoltage protection	Built in O.V.P protection, with a protection value of+5% of the rated value. After protection, the output is turned off and unlocked when restarted
overcurrent protection	Overload, short circuit, constant current output
overheat protection	Built in O.T.P protection, with a protection value of 85 ℃± 5% (radiator temperature). After protection, the output is turned off,After the overheating is relieved, the output can be automatically restored
Output polarity	Output positive (+) and negative (-) can be grounded at will (positive and negative pole flashlights or automatic reversing function can be installed)
insulation strength	Input shell AC2000V/1 minute, leakage current less than 10mA Input to output AC1500V/1 minute, leakage current less than 10mA
insulation resistance	Input to shell, input to output: DC1000V, greater than 100M Ω Output to shell: DC500V, greater than 100M Ω
cooling method	forced air cooling
operating environment	Indoor usage design, temperature range: -5 ℃ to 50 ℃; Humidity: 10% to 85% RH
storage environment	Temperature: -20 ℃ to 70 ℃; Humidity: 10% to 90% RH
atmospheric pressure	70-106KPa (altitude below 2000m)
Protection level	IP20
Mean time between failures	≥50000H
efficiency	>90% (running at full load)
execution standard	GB4943、GB925
volume	500 * 600 * 1000mm (width * depth * height)
optional	1External control function: optional 20-5V、 0-10V or4-20mA analog PLCOutput voltage and current of signal controlled power supply 2. SamplingFunction:Output voltage and currentTwo samples can be taken0-5V、 0-10V or4-20mA analog PLCsignal 3Timer function: optional timer cycle on/off and operation; 4. Remote compensation function:Can provide remote sampling function for positive and negative electrodes to reduce voltage drop on the wire 5. Remote control power on/off function: can provide 5V level signal input port to control power on/off 6. Communication function:Optional RS485, RS232, GPIB, USB and other data interfaces, standard Modbus industrial communication protocol. It can also provide upper computer software to control and monitor the working status of the power supply. And it can be centrally controlled through RS485 networking,By using digital transmission, only the communication address of each power supply needs to be set.

Model
model	input voltage	output voltage	output current
NHWY30V-1000A	AC380V	DC0-30V	0-1000A
NHWY60V-500A	AC380V	DC0-60V	0-500A
NHWY100V-300A	AC380V	DC0-100V	0-300A
NHWY200V-150A	AC380V	DC0-200V	0-150A
NHWY300V-100A	AC380V	DC0-300V	0-100A
NHWY400V-75A	AC380V	DC0-400V	0-75A
NHWY500V-60A	AC380V	DC0-500V	0-60A
NHWY600V-50A	AC380V	DC0-600V	0-50A
NHWY800V-37A	AC380V	DC0-800V	0-37A
NHWY1000V-30A	AC380V	DC0-1000V	0-30A
NHWY1500V-20A	AC380V	DC0-1500V	0-20A
NHWY2000V-15A	AC380V	DC0-2000V	0-15A
NHWY3000V-10A	AC380V	DC0-3000V	0-10A