EA-BT 20200-420 4U WC Stainless Steel Water-Cooled Regenerative Battery Tester

The EA-BT 20200-420 4U WC is a professional EA Elektro-Automatik water cooled battery tester and 4U rack mount battery tester from the EA-BT 20000 series, equipped with a stainless steel water cooling system for uninterrupted high-load high-voltage industrial battery testing. As a two quadrant battery tester and bidirectional battery charge discharge tester, it integrates full charging and discharging capabilities, operating as a regenerative energy recovery battery tester and grid feedback battery tester that feeds discharge energy back into the grid with up to 95.1% sink/source efficiency, drastically reducing energy consumption and heat emission, making it an energy saving battery tester and low heat emission battery tester. It also serves as a programmable dc power supply and programmable dc power source for flexible industrial power applications. This high voltage high current battery tester features a wide 3-phase AC input range of 208 V ±10% and 380-480 V ±10%, supporting 45-65Hz frequency, with active power factor correction achieving a typical 0.99 power factor and <10mA leakage current, compatible with all major global industrial power grids. When operating on 208 V ±10% AC, it automatically derates to 18kW DC output power. Its DC output delivers 0-200 V DC voltage, 0-420 A current and 0-30000 W power range, with a 1.8V minimum sink voltage for full current output even at low battery voltages. It offers low output ripple with ≤40 mV rms (300 kHz bandwidth) and ≤300 mV pp (20 MHz bandwidth), paired with 5400 μF output capacitance for stable power delivery to sensitive battery cells and modules. The device employs digital regulation with 16 bit ADCs and DACs, providing ≤0.05% FS voltage measurement accuracy and ≤0.1% FS current measurement accuracy, supporting CV, CC, CP, CR regulation modes with fast crossover for high accuracy battery testing. It delivers fast dynamic response with CV rise/fall time ≤10 ms and CC rise/fall time ≤2 ms, meeting the demands of fast response battery testing and battery cycle life tester applications. It features 3750 Vrms insulation between AC input and DC terminals, ±1000 V DC negative pole to PE insulation and +1000 V DC positive pole to PE insulation, with all communication interfaces galvanically isolated from the DC side for safe operation. Standard interfaces include USB, 1Gbit/s Ethernet, EtherCAT with 1 ms communication speed, CAN FD, and a front USB host for data logging and sequencing, plus 3 configurable digital inputs, 3 relay outputs and 3 temperature sensor inputs. It supports scalable parallel operation via galvanically isolated Share-Bus and Master-Auxiliary bus, allowing up to 64 units of the same series to be connected for high-power automated battery test system with symmetrical load sharing, delivering up to 1920 kW total power and 26880 A total current. Integrated battery test functions include CC-CV discharge characteristics, ampere hour counter, dedicated battery test mode and battery simulation, making it suitable as a battery module tester, battery pack tester, battery SOH testing equipment and battery EOL testing equipment. It is widely applied in EV battery testing, automotive battery testing and battery recycling tester applications. The stainless steel water cooling system eliminates fan noise and provides superior thermal management for prolonged 24/7 high-voltage high-current operation, with dimensions of 483 mm (W) x 177 mm (H) x 668 mm (D) and a weight of 56 kg. It has an IP20 ingress protection rating, operates in 0-50 °C ambient temperature (rated power is permanently available up to approximately +40 °C), and includes comprehensive protective functions: adjustable OVP (0-110% nominal voltage), OCP (0-110% nominal current), OPP (0-110% nominal power) and overtemperature protection. It complies with EN 61010-1, IEC 61010-1, UL 61010-1 safety standards and EN 55011 Class A EMC requirements.

Key Features

• Stainless Steel Water-Cooled Design: Optimized for continuous high-load battery cycle life testing, eliminates fan noise and delivers superior thermal stability compared to air-cooled models.
• High-Efficiency Regenerative Recovery: 95.1% sink/source efficiency, feeds discharge energy back to the grid, cutting energy costs and reducing cooling infrastructure needs.
• Wide Global AC Compatibility: 3-phase 208V±10% / 380-480V±10% input, 45-65Hz frequency, typical 0.99 power factor and <10mA leakage current.
• High-Voltage High-Current Output: 0-200V DC, 0-420A, 30kW rated power (18kW derated at 208V), 1.8V minimum sink voltage for full-current operation.
• Low-Ripple Precision Output: ≤40mV rms / ≤300mV pp CV ripple, 5400μF output capacitance, ensures stable power for sensitive battery testing.
• 16-Bit High-Precision Regulation: ≤0.05% FS voltage accuracy, ≤0.1% FS current accuracy, supports CV/CC/CP/CR modes with fast crossover.
• Fast Dynamic Response: CV rise/fall time ≤10ms, CC rise/fall time ≤2ms, adapts to rapid changes in dynamic battery test profiles.
• High-Grade Electrical Isolation: 3750Vrms AC-to-DC insulation, ±1000V DC pole-to-PE insulation, galvanically isolated interfaces for safe operation.
• Rich Industrial Interfaces: USB, 1G Ethernet, 1ms EtherCAT, CAN FD, plus digital I/O and temperature sensor inputs for seamless automation integration.
• Scalable Parallel Operation: Up to 64 units parallel via Share-Bus/Master-Auxiliary bus, enabling up to 1920kW total power test systems.
• Integrated Battery Test Suite: CC-CV discharge, ampere hour counter, battery test mode and battery simulation for comprehensive evaluation.
• Comprehensive Protection & Compliance: Adjustable OVP/OCP/OPP/OT protection, meets EN 61010-1 safety and EN 55011 Class A EMC standards, IP20 rating.
• Broad Industrial Applications: Ideal for EV/automotive battery testing, module/pack validation, SOH/EOL assessment and battery recycling.