The HEP-2300 series is a 2300W industrial AC/DC power supply designed for operation in highly humid, dusty, oily, and high-vibration harsh environments. The entire series is housed in an aluminum case and fully potted with heat-conducted glue, ensuring robust performance and reliability.
Function Description:
The HEP-2300 series serves as a high-performance power supply solution for various industrial and telecom applications. It offers multiple output voltage options, including 55V, 115V, 230V, and 380VDC, catering to diverse system requirements. A key feature of the 55V model is its integrated charger function, suitable for lead-acid and lithium-ion batteries, which includes default 2/3 stage charging curves and programmable curves.
The device supports various communication interfaces for control and monitoring. PMBus, CANBus, and Modbus (Modbus available for 55V only) are optional, allowing for digital communication and remote management. Analog control signals (PV, PC, and SVR) are also available as a default setting. The output voltage and constant current level are programmable, offering flexibility in application.
Built-in protections include short circuit, overload, over voltage, and over temperature, ensuring the safety and longevity of the unit and connected equipment. The device also features remote ON-OFF control and an active DC OK signal for system integration and status monitoring. A harness connector type is available with AC fail and T-Alarm signals, further enhancing its utility in complex systems. An LED indicator provides visual feedback on the power status.
Important Technical Specifications:
- Output Voltage Options: 55V, 115V, 230V, 380VDC.
- Rated Power: 2300W (factory default) / 2304W (max.) for 55V model.
- Efficiency: Up to 95.5% with active Power Factor Correction (PFC) function (PF > 0.99/115VAC, PF > 0.95/230VAC, PF > 0.93/277VAC at full load).
- Input Voltage Range: 90~305VAC (47~63Hz) and 250~431VDC.
- Operating Temperature Range: -40°C to +70°C (refer to derating curve).
- Vibration Resistance: Withstands 10G vibration test (20~500Hz, 10G 12min./1cycle, period for 72min. each along X, Y, Z axes).
- Cooling: Fanless design, utilizing free air convection and heat-conducted glue potting.
- Protections: Overload (constant current limiting, unit shuts down after 5 sec, re-power to recover), Over Voltage (shut down O/P voltage, re-power to recover), Over Temperature (shut down O/P voltage, recovers automatically after temperature goes down).
- Programmable Features: Output voltage (50~120% of nominal) and constant current level (20~100% of rated current) are programmable via PV/PC or communication interfaces.
- Auxiliary Power: 12V@0.5A (tolerance ±10%, ripple 150mVp-p).
- DC-OK Signal: TTL signal output (PSU turn on = 4.5~5.5V; PSU turn off = -0.5~0.5V).
- Leakage Current: <1.8mA Peak/240VAC, <2mA Peak/277VAC.
- Inrush Current: Cold start 60A/230VAC.
- Safety Protection Level: Class I, requiring proper connection of "Frame Ground" (PE).
Usage Features:
- Installation Flexibility: Supports diverse installation scenarios, including horizontal surface mounting and vertical wall mounting. Vertical installation requires a firm surface capable of supporting at least 13KG. Pole mounting options are also available for rear and side mounting.
- Cable Management: Wire connections should be as short as possible (ideally less than 1 meter) and chosen based on safety requirements and current ratings to ensure efficiency and prevent overheating.
- Output Type Options: Available with terminal, wiring, and harness connector (55V only) output types to suit different application needs. The harness connector type is particularly suitable for cell site applications, offering three DC outputs with different current capacities (3G-5G) and battery back-up input for system reliability.
- Remote Control: Features built-in remote ON/OFF control, allowing the unit to be turned on or off via dry contact.
- Output Adjustment: Output voltage can be adjusted via a potentiometer (SVR) on the panel, or through PV (Output Voltage Programming) and PC (Output Current Programming) interfaces. Digital communication interfaces (PMBus, CAN bus, Modbus) also enable output voltage and current adjustments.
- Charger Function (55V only): Offers 2-stage and 3-stage charging curves for lead-acid and lithium-ion batteries. The charger detects battery connection, applies constant current until boost voltage, and then constant voltage until charging current drops to 10% of rated current. LED indicators (Orange for charging, Green for fully charged) provide status feedback.
- Communication Protocols: PMBus, CANBus, and Modbus RTU interfaces provide comprehensive control and monitoring capabilities, including reading output voltage, current, internal temperature, alarm status, manufacturer data, and managing charger mode settings. Device addressing is configurable via a rotary switch for multi-unit systems.
- Inrush Current Limiting: Includes a built-in AC inrush current limiting circuit with an NTC thermistor and relay. A 10-second cool-down period is recommended after turning off the supply before restarting to allow the thermistor to cool.
Maintenance Features:
- Safety Guidelines: Emphasizes that all failures should be examined by a qualified technician. Users are advised not to remove the case or modify any components themselves.
- Troubleshooting Guide: Provides a comprehensive troubleshooting table for common issues such as the supply not working, battery not fully charged, and abnormal LED indicator situations. Suggested solutions include checking remote ON-OFF connections, replacing batteries, verifying cable sizes, re-powering the charger, and contacting the battery manufacturer or MEAN WELL for further assistance.
- Factory Reset: A procedure is available to restore the unit to factory settings for various commands (VOUT_TRIM, IOUT_OC_FAULT_LIMIT, OPERATION, SYSTEM_CONFIG, and all charge commands) by manipulating a rotary switch and AC power.
- Warranty: The product comes with a six-year warranty under normal usage conditions. Users are advised against replacing parts or modifying the product to maintain warranty validity. The latest version of the manual and warranty information can be found on the MEAN WELL website.
Need help?
General
To Next Page