Product overview

The ZHHC3 series features a wide-range, high-precision programmable DC power supply with active PFC technology, achieving up to 0.99 power factor. This PWM-based high-frequency switching DC power supply employs a modular design and advanced DSP digital control technology, offering constant voltage, constant current, and constant power output modes. It supports automatic cross-mode conversion while maintaining both control and protection characteristics, ensuring high precision, low ripple, rapid transient response, and efficiency up to 93%. Primarily designed for applications in electronic power production, battery manufacturing, PCB board fabrication, communication systems, PLC power supply, electromechanical aging testing, DC motor testing, automated test system integration, medical devices, industrial use, battery charging, as well as simulation, hybrid electric vehicle, and photovoltaic inverter testing research laboratories requiring high-precision DC power solutions.

Product features

· Active PFC, power factor up to 0.99;

· Constant power wide range voltage and current output;

· High-speed DSP is used for PID operation, direct PWM output, modular design, high power density, small size, greatly reduce the failure rate;

· 18bit high-speed ADC is adopted to measure voltage and current values quickly and accurately; the control circuit adopts high-speed CPU to achieve high voltage precision and small ripple;

· It has constant voltage, constant current and constant power mode output, and can be automatically cross-transformed to maintain the characteristics of both control and protection;

· It has overvoltage, overcurrent, overtemperature and short circuit protection functions. Overvoltage (OVP) and overcurrent (OCP) can be set in the system, and the value can be adjusted;

· It has 9 memory groups, which can set the commonly used parameters (voltage and current) for easy use. It can execute 100 sets of different voltage, current, power, rise time and operation time settings at one time, and can make continuous 999,999 cycles of test. The operation time can be set as short as 1ms, and various output waveforms can be edited in this mode;

· Provide embedded intelligent PC monitoring system, with RS232, RS485, LAN, CAN, USB and other communication interfaces, MODBUS-RTU standard communication protocol;

· Standard 0-5V analog signal interface;

· Multi-level linkage function: external M&S master-slave parallel port, a single machine can switch master and slave at will through system Settings, up to 200 units of the same model can be supported;

· Voltage slope and current slope can be set to control the speed of voltage and current change, which is used to test the stable working range, protection point and stability of the load;

· Color LCD display, Chinese/English interface, convenient and fast key operation;

· Has line voltage drop compensation function;

· Input/output isolation;

· Constant Voltage/Current Switching Specifications: Under rated power, voltage, and current output conditions, users can freely configure required settings. The output modes are Constant Voltage (CV) and Constant Current (CC), which depend on the power supply's output voltage, current parameters, and load resistance values. As illustrated in the diagram: Curves 1 and 2 represent two loads with different resistance values. When Curve 1 intersects with Iset, the power supply operates in CC mode; when Curve 2 intersects with Vset, it switches to CV mode.

Product applications

· Energy saving lamps and other lamps testing and aging

• Switching power supply, power adapter

· Capacitors, resistors, relays, transistors, sensors and other electronic components

· Photovoltaic and inverter test aging

· Electrolysis, electroplating, corrosion aluminum foil processing, etc

• Aerospace, defense and military industry

● Motor, controller and DC motor testing and aging of electric vehicles

· Automotive electronics, DC motors, motor controllers, cigarette burners, audio and video testing aging, etc

· LCD screen, touch screen and other displays

ZHHC3 series high precision programmable DC power supply selection