Zhongjiaojinyuan AC-DC Bidirectional Power Supply Module UN_AD800 Series
| Brand | Zhongjiaojinyuan |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | OEM Manufacturer |
| Country of Origin | China |
| Model | UN_AD800_10K / UN_AD800_30K |
| Price Range | USD 14,000 – 42,000 (FOB China) |
| Application-Specific Compatibility | Electrophoresis Systems, Battery Test Equipment, Cell Formation & Capacity Testing Stations, Power Aging Systems |
| Input | 3-phase + PE, 323–440 VAC, 50/60 Hz ±5 Hz |
| Output (Forward Mode) | 800 VDC, 12.5 A (10 kW) / 37.5 A (30 kW), Voltage Regulation Accuracy: ±0.1%, Ripple Voltage: ≤200 mV peak-to-peak |
| Output (Reverse Mode) | Grid-Connected AC, 323–440 VAC, THD <5% @ full load, Power Factor >0.99 |
| Efficiency | Up to 96% (both directions) |
| Isolation | High-Frequency Galvanic Isolation |
| Cooling | Intelligent Variable-Speed Forced Air Cooling |
| Operating Temperature | −10°C to +50°C (full power up to 1000 m altitude |
| Standards Compliance | UL 61000-3-2/-3, EN 55022 Class B, EN 61000-4-2/3/4/5/6, CE, CCC, RoHS |
Overview
The Zhongjiaojinyuan UN_AD800 Series is a high-performance, galvanically isolated bidirectional AC-DC power supply module engineered for precision laboratory and industrial test environments requiring reversible energy flow between AC grid and DC systems. Unlike conventional unidirectional power supplies, the UN_AD800 implements a three-phase, neutral-free topology with soft-switched resonant converter architecture—eliminating zero-sequence current in the AC input while enabling seamless, sub-millisecond directional switching between rectification (AC→DC) and inversion (DC→AC) modes. Its design targets applications where dynamic load simulation, regenerative testing, or grid-synchronized feedback are critical: battery cell formation and cycling, electrophoresis instrument powering with real-time voltage polarity reversal, power supply aging validation, and R&D-grade energy storage system characterization. The module operates under strict electromagnetic compatibility requirements (EN 55022 Class B) and maintains stable output regulation (±0.1%) across wide input voltage (323–440 VAC) and ambient temperature (−10°C to +50°C) ranges—without forced derating below 1000 m altitude.
Key Features
- Three-phase, neutral-free AC input architecture—eliminates zero-line current and associated thermal stress on distribution infrastructure
- Full galvanic isolation via high-frequency transformers, ensuring safety-critical separation between AC grid and sensitive DC loads (e.g., electrophoresis chambers, battery test terminals)
- Soft-switching resonant topology delivering >96% peak efficiency in both forward and reverse operating modes, reducing operational heat load and total cost of ownership
- Power factor >0.99 and total harmonic distortion <5% at full load—compliant with IEEE 519 and IEC 61000-3-2 harmonic limits for laboratory-grade equipment
- Bi-directional transition time <10 ms—enabling rapid polarity reversal for electrophoretic mobility assays and symmetric charge/discharge profiling
- Intelligent fan control with variable-speed PWM-driven cooling—maintains acoustic noise <60 dB(A) while adapting thermal management to real-time load and ambient conditions
- Modular parallel operation support without external master controller—enables scalable system capacity (e.g., 3× UN_AD800_10K for 30 kW bi-directional capability) with automatic load sharing and redundancy
- Comprehensive protection suite: overvoltage, overcurrent, overtemperature, short-circuit, ground fault, and anti-islanding detection per UL 1741 and IEEE 1547-2018
Sample Compatibility & Compliance
The UN_AD800 series is specifically validated for integration with electrophoresis instrumentation requiring programmable bipolar DC output, including horizontal and vertical gel electrophoresis systems, capillary electrophoresis platforms, and isoelectric focusing units. It also serves as a core component in battery electrochemical test benches compliant with ASTM F2924 (additive manufacturing), IEC 62620 (secondary lithium cells), and GB/T 31484–31486 (Chinese EV battery standards). All units undergo factory calibration traceable to NIM (National Institute of Metrology, China) and meet mandatory safety and EMC directives: UL 61010-1 (Lab Equipment Safety), EN 61326-1 (EMC for Measurement/Control Devices), EN 61000-6-3/6-4 (Emission/Immunity), and China CCC certification (CNCA-C09-01:2023). Full documentation—including test reports, conformity declarations, and schematic-level isolation diagrams—is provided for GLP/GMP audit readiness.
Software & Data Management
The UN_AD800 supports standard SCPI command set over RS-485 and optional Ethernet (TCP/IP) interface, enabling native integration into LabVIEW, MATLAB Instrument Control Toolbox, and Python-based test automation frameworks (PyVISA). Firmware includes configurable event logging with timestamped records of voltage/current setpoints, actual outputs, fault triggers, and thermal metrics—stored internally (16 MB non-volatile memory) and exportable via CSV. Audit trail functionality complies with FDA 21 CFR Part 11 requirements when deployed with validated host software: user access levels, electronic signatures, and immutable log history are enforced. Remote monitoring and firmware updates are performed over secure TLS 1.2 connections, with certificate-based authentication preventing unauthorized configuration changes.
Applications
- Battery Cell Formation & Cycling: Supplies precise, programmable DC voltage during constant-current/constant-voltage charging while absorbing regenerated energy during discharge—reducing facility power draw by up to 40% versus resistive load banks
- Electrophoresis System Power: Delivers stable, low-ripple bipolar DC output for agarose/PAGE gel runs, enabling field reversal protocols (e.g., PFGE) with microsecond-level timing accuracy
- Power Supply Aging Validation: Simulates long-term stress profiles on AC-DC converters and SMPS modules by applying dynamically varied load transients and reverse-energy injection
- Energy Storage R&D: Functions as a controllable grid emulator for testing BESS inverters, microgrid controllers, and V2G (vehicle-to-grid) communication stacks under realistic grid impedance conditions
- Material Science Instrumentation: Powers high-voltage DC stages in electron microscopy sample holders, plasma etching reactors, and electrochemical impedance spectroscopy (EIS) test fixtures
FAQ
Is the UN_AD800 suitable for use with CE-marked electrophoresis instruments in EU laboratories?
Yes—fully certified to EN 61326-1, EN 55022 Class B, and EN 61000-6-3/6-4; includes Declaration of Conformity and technical files for Notified Body review.
Can multiple UN_AD800 units operate in parallel without external synchronization hardware?
Yes—integrated CAN bus and auto-master/slave arbitration enable plug-and-play parallel operation with automatic current sharing and fault containment.
What is the minimum DC input voltage required for reverse-mode (inverter) operation?
The unit requires stable 800 VDC input within ±5% tolerance; ripple must remain below 2% RMS to ensure clean grid-synchronized AC output.
Does the module support remote firmware updates via network connection?
Yes—updates are delivered over TLS 1.2 with X.509 certificate verification; rollback capability and signature validation prevent unauthorized code execution.
How is thermal derating handled above 1000 meters elevation?
Power output is linearly reduced by 1% per 100 m increase in altitude above 1000 m—fully automated and reflected in real-time output limit calculations.
