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High-Efficiency Battery Tester with Advanced Recovery Features | 30 kW

BT 20000 4U

EA Elektro-Automatik’s BT 20000 4U Series Battery Tester with Regenerative Energy Recovery sets a new standard for high-power battery testing. Designed for versatility and efficiency, it features advanced autoranging technology and up to 96% energy recovery. With scalability and comprehensive built-in testing and simulation capabilities, it’s ideal for demanding applications in research, development, and production. UL 61010-1 Certified.

Key Features

96% Energy Recovery Efficiency: Reduces costs and minimizes heat output.

Wide Voltage & Current Range: 0–2000 V and up to 1000 A per unit.

High Power Density: Up to 30 kW in a compact 4U chassis.

Flexible Autoranging: Full power across a wide range of voltage and current.

Scalable Systems: Combine up to 64 units for 1920 kW and 64,000 A.

Integrated Battery Testing & Simulation: Built-in modes for streamlined testing.

Advanced Connectivity: USB, Ethernet, EtherCAT, CAN FD, and more.

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Why Choose W5?

Expertise

At W5 Engineering, we specialize in power electronics, providing unmatched knowledge of EA Powered products. Our team of technical sales engineers ensures you find the perfect solution for even the most complex requirements.

Custom Solutions

We deliver customized configurations and integrations tailored to your unique applications. Whether for R&D, production, or testing, W5 Engineering ensures your power systems meet exact specifications.

Rapid Shipping

With on-hand inventory and advanced logistics, we minimize lead times to keep your projects on track. Enjoy seamless delivery and peace of mind with our reliable shipping network.

Customer Support

Our dedicated support and technical teams are with you every step of the way, offering expert assistance from installation to troubleshooting. We’re committed to your success with responsive service and training.

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Available Models

Product Information

Specifications

Interfaces and Software

Resources

Available Models

Name	Power (W)	Voltage (V)	Current (A)	Ripple in CV (pp)	Ripple in CV (rms)
BT 22000-40	50000 W	2000 V	40 A	≤3000 mV (BW 20 MHz)	≤500 mV (BW 300 kHz)
BT 21500-60	50000 W	1500 V	60 A	≤2400 mV (BW 20 MHz)	≤400 mV (BW 300 kHz)
BT 20920-120	30000 W	920 V	120 A	≤1200 mV (BW 20 MHz)	≤250 mV (BW 300 kHz)
BT 21000-80	30000 W	1000 V	80 A	≤1600 mV (BW 20 MHz)	≤300 mV (BW 300 kHz)
BT 20500-180	30000 W	500 V	180 A	≤350 mV (BW 20 MHz)	≤70 mV (BW 300 kHz)
BT 20080-1000	30000 W	80 V	1000 A	≤320 mV (BW 20 MHz)	≤25 mV (BW 300 kHz)
BT 20200-420	30000 W	200 V	420 A	≤300 mV (BW 20 MHz)	≤40 mV (BW 300 kHz)
BT 20360-240	30000 W	360 V	240 A	≤320 mV (BW 20 MHz)	≤55 mV (BW 300 kHz)
BT 20010-1000	30000 W	10 V	1000 A	≤320 mV (BW 20 MHz)	≤25 mV (BW 300 kHz)
BT 20060-1000	30000 W	60 V	1000 A	≤320 mV (BW 20 MHz)	≤25 mV (BW 300 kHz)

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Product Information

High-Power Battery Testing with Regenerative Energy Recovery

The EA Elektro-Automatik BT 20000 4U Series is a high-performance battery testing system designed to meet the needs of modern energy applications. With regenerative energy recovery technology, it achieves up to 96% efficiency, significantly reducing energy costs and heat output during discharge operations. Its wide input voltage range (208–480 V, 3-phase) ensures compatibility with global power grids, while its flexible autoranging technology delivers consistent full-power operation across a broad range of voltage and current settings, from 0–2000 V and up to 1000 A.

Engineered for scalability and versatility, the BT 20000 4U Series allows up to 64 units to operate in parallel, providing up to 1920 kW and 64,000 A for large-scale testing environments. The system’s advanced Master-Slave and Share-Bus interfaces enable seamless load sharing and centralized monitoring, making it ideal for applications requiring high power and precision, such as battery module and pack testing or energy storage research. Integrated testing modes and battery simulation capabilities enhance its utility, enabling efficient state-of-health (SOH) checks, end-of-line (EOL) testing, and battery recycling processes.

With robust connectivity options, including USB, Ethernet, EtherCAT, and CAN FD, the BT 20000 4U Series ensures fast, reliable communication with external systems, supporting integration into complex testing environments. Its compact 4U form factor combines high power density with ease of installation, making it an excellent choice for laboratories, manufacturing facilities, and research centers. Certified to UL 61010-1 standards, the BT 20000 4U Series delivers precision, efficiency, and reliability for even the most demanding battery testing applications.

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Specifications

AC Input

- Voltage, Phases: 380–480 V ±10%, 3-phase AC (208–240 V ±10%, 3-phase AC with derating to 18 kW)
- Frequency: 45–65 Hz
- Power Factor: Typical 0.99
- Leakage Current: <10 mA
- Phase Current: ≤56 A @ 400 V AC
- Overvoltage Category: 2

DC Output (Static)

- Load Regulation (CV): ≤0.05% FS (0–100% load, constant AC input voltage and constant temperature)
- Line Regulation (CV): ≤0.01% FS (208–480 V AC ±10% supply voltage, constant load and constant temperature)
- Stability (CV): ≤0.02% FS (during 8 h of operation, after 30 minutes warm-up, at constant AC input voltage, load, and temperature)
- Temperature Coefficient (CV): ≤30 ppm/°C (after 30 minutes of warm-up)
- Load Regulation (CC): ≤0.1% FS (0–100% load, constant AC input voltage and constant temperature)
- Line Regulation (CC): ≤0.01% FS (208–480 V AC ±10% supply voltage, constant load and constant temperature)
- Stability (CC): ≤0.02% FS (during 8 h of operation, after 30 minutes warm-up, at constant AC input voltage, load, and temperature)
- Temperature Coefficient (CC): ≤50 ppm/°C (after 30 minutes of warm-up)
- Load Regulation (CP/CR): ≤0.3% FS + 0.1% FS current

Protective Functions

- Overvoltage Protection (OVP): Adjustable 0–110% UNominal
- Overcurrent Protection (OCP): Adjustable 0–110% INominal
- Overpower Protection (OPP): Adjustable 0–110% PNominal
- Overtemperature Protection (OT): DC output shuts down in case of insufficient cooling

DC Output (Dynamic)

- Rise Time (10–90%, CV): ≤10 ms
- Fall Time (90–10%, CV): ≤10 ms
- Rise Time (10–90%, CC): ≤2 ms
- Fall Time (90–10%, CC): ≤2 ms

Display Accuracy

- Voltage: ≤0.05% FS
- Current: ≤0.1% FS

Insulation

- AC Input to DC Output: 3750 Vrms (1 minute, creepage distance >8 mm)
- AC Input to Case (PE): 2500 Vrms
- DC Output to Interfaces: 1000 V DC (models up to 360 V rating), 1500 V DC (models from 500 V rating)

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Control Interfaces (Digital)

- Built-in, Galvanically Isolated: USB, Ethernet (1 Gbit), EtherCAT Slave, CAN FD
- Communication Speed: 1 ms
- USB Host (Front Panel): For data acquisition

Control Interfaces (Analog)

- Built-in, Galvanically Isolated: 16-pole connector
- Inputs: 3 independent inputs
- Outputs: 3 independent relay contacts
- Temperature Inputs: 3 independent temperature sensor inputs

Device Configuration

- Parallel Operation: Up to 64 units with Master-Slave-Bus and Share-Bus

Safety and EMC

- Safety Standards: EN 61010-1, IEC 61010-1, UL 61010-1, CSA C22.2 No 61010-1, BS EN 61010-1
- EMC Compliance: EN 55011 (Class B), CISPR 11 (Class B), FCC 47 CFR part 15B (Class B), EN 61326-1
  - Includes tests: EN 61000-4-2, EN 61000-4-3, EN 61000-4-4, EN 61000-4-5, EN 61000-4-6
- Safety Protection Class: Class 1
- Ingress Protection: IP20

Environmental Conditions

- Operating Temperature: 0–50 °C (32–122 °F)
- Storage Temperature: -20–70 °C (-4–158 °F)
- Humidity: ≤80% relative humidity, non-condensing
- Altitude: ≤2000 m (≤6,600 ft)
- Pollution Degree: 2

Mechanical Construction

- Cooling: Forced air flow from front to rear (temperature-controlled fans), optional water cooling
- Dimensions (W x H x D): 19” x 4U x 668 mm (26.3 in)
- Weight: 50 kg (110 lb)
- Weight with Water Cooling: 56 kg (126 lb)