ITECH IT-M3900B | Bidirectional DC Source/Load System
Sources and loads DUTs in one system, returns energy to the grid, and accelerates dynamic testing with lower cooling and space requirements.
- ✓ Voltage: up to 1500 V
- ✓ Current: up to 1020 A (Source) / up to 720 A (Load)
- ✓ Power: up to 12 kW
Regenerative DC Source/Load System up to 1,500 V and 12 kW
The ITECH IT-M3900B Series combines a bidirectional DC power supply with a regenerative electronic DC load.
With up to 6 kW in 1U, 12 kW in 2U, 1,500 V, and 1,020 A, it enables space-saving DC test systems with high power density.
Source, Load, and Energy Regeneration
Because the IT-M3900B can both source and load a DUT within one system, there is no need to switch between separate source and load instruments. At the same time, the fast current-direction transition reduces overshoot during dynamic tests. In load mode, the system feeds back up to 95% of the absorbed power, while grid monitoring synchronizes the regenerative operation with the AC mains.
Dynamic DC Test Profiles
For controlled load changes, the series combines CV/CC priority, adjustable output impedance, and programmable voltage, current, and power slew rates.
Up to 10 million sequence points reproduce complex test profiles, while CC, CV, CW, CR, and combined operating modes extend test flexibility.
Battery and Automotive Testing
Battery testing and simulation can be parameterized using voltage, capacity, internal resistance, and state of charge. Test curves for LV123, LV148, DIN 40839, ISO 16750-2, SAE J1113-11, LV124, and ISO 21848 are also stored in the instrument and cover selected test requirements. This function is not available on 10 V models.
Scalability, Interfaces, and Protection
Master-slave parallel operation increases the available power. For configurations with more than 16 units, each in a 1U form factor, or more than eight units, each in a 2U form factor, ITECH recommends project-specific coordination.
USB, CAN, LAN, and digital I/O are integrated; GPIB and analog/RS-232 are optional. OVP, ±OCP, ±OPP, overtemperature protection, transient voltage-drop protection, and anti-islanding protection safeguard system operation.
Alternative Products
For high-power DC sourcing only, consider the ITECH IT6600D Series. For regenerative AC/DC load testing, consider the ITECH IT8200E Series.
Related Product Categories
Bidirectional Power Supplies | Electronic Loads | Power Supplies and Sources
Would you like to integrate the ITECH IT-M3900B Series into your test system or need support in selecting the right configuration?
Contact us – we will assist you in optimizing system design and integration into your test environment.
Variants
Specifications
| Voltage range | model-dependent, 10 V to 1,500 V |
|---|---|
| Current range in source mode | up to +1,020 A and down to -720 A in the negative current direction |
| Current range in load mode | up to 720 A |
| Power | up to 6 kW in 1U or 12 kW in 2U |
| System concept | bidirectional DC power supply and regenerative electronic DC load in one system |
| Regenerated power in load mode | up to 95% according to the manufacturer |
| Maximum system efficiency | model-dependent, 89% to 93% |
| Master-slave parallel operation | power expansion by connecting multiple units in parallel |
| Parallel configurations | coordination with ITECH is required for more than 16 units in a 1U form factor or more than eight units in a 2U form factor |
| Control priority | CV or CC priority |
| Output impedance | adjustable |
| Programmable slew rates | rise and fall rates for voltage, current, and power |
| Operating modes | CC, CV, CW, CR, CV+CC, CV+CR, CC+CR, and CC+CV+CW+CR |
| Dynamic test sequences | up to 10 million points |
| Integrated interfaces | USB, CAN, LAN, and digital I/O |
| Optional interfaces | GPIB and combined analog/RS-232 interface |
| Protection functions | OVP, positive and negative OCP and OPP limits, OTP, transient voltage-drop protection, anti-islanding, and automatic grid detection |
| Programming response time | 0.1 ms |
| AC input | single-phase 100 V to 240 V or three-phase 200 V to 480 V |
| Line frequency | 50/60 Hz |
| Maximum AC input current | 12.5 A |
| Power factor | up to 0.99 |
| Current harmonic distortion | ≤ 3% |
| Operating temperature | 0°C to 40°C |
| Storage temperature | -10°C to 70°C |
| Cooling | forced-air cooling |
Options & Accessories
| IT-E165A-250 | reverse-polarity protection unit, 750 V / 250 A |
|---|---|
| IT-E165A-400 | reverse-polarity protection unit, 750 V / 400 A |
| IT-E165A-500 | reverse-polarity protection unit, 900 V / 400 A |
| IT-E165B | anti-EMF unit, 1,200 V / 200 A, for reverse-current protection |
| IT-E168/IT-E169 | fiber-optic interconnection kit for parallel operation of multiple units |
| IT-E155A | 1U rack-mount kit |
| IT-E155B | supplementary 1U rack-mount kit for use with IT-E155A |
| IT-E155C | supplementary 1U rack-mount kit for use with IT-E155A |
| IT-E176 | GPIB communication interface |
| IT-E177 | combined RS-232/analog communication card |
| BSS2000 | battery simulation software |
| SAS1000 | software for PV array and I-V curve simulation |
| FCS3000 | software for single-channel fuel cell simulation |
| IT-E510-15U | system cabinet, 15U, gray, 800 × 550 × 907.64 mm |
| IT-E511-15U | system cabinet, 15U, black, 800 × 550 × 907.64 mm |
| IT-E510-27U | system cabinet, 27U, gray, 800 × 600 × 1,441.41 mm |
| IT-E511-27U | system cabinet, 27U, black, 800 × 600 × 1,441.41 mm |
| IT-E510-37U | system cabinet, 37U, gray, 800 × 600 × 1,885.91 mm |
| IT-E511-37U | system cabinet, 37U, black, 800 × 600 × 1,885.91 mm |
| IT-E258-15U | 5 m AC power cord for 15U system cabinets, Chinese standard |
| IT-E258-27U | 5 m AC power cord for 27U system cabinets, Chinese standard |
| IT-E258-37U | 5 m AC power cord for 37U system cabinets, Chinese standard |
| USB cable | connection cable for USB communication |
| AC power cord | model-dependent mains connection cable |
| IT-E30110-AB | test lead, 10 A, 1 m, alligator clip to banana plug |
| IT-E30110-BB | test lead, 10 A, 1 m, banana plug to banana plug |
| IT-E30110-BY | test lead, 10 A, 1 m, banana plug to Y terminal |
| IT-E9003 | ITECH warranty extension for up to 3 years |
| IT-E9005 | ITECH warranty extension for up to 5 years |
Scope of Delivery
| Device(s) of the IT-M3900B Series |
| Power cord |
| USB communication cable |
| Factory test report |
| Operating manual |
Applications
| Battery charge and discharge testing |
| Battery simulation with adjustable voltage, capacity, internal resistance, and state of charge |
| Testing of bidirectional DC-DC converters |
| Testing of OBCs and other automotive power electronic components |
| Testing of inverters, rectifiers, and industrial power supply modules |
| Testing of emergency power supplies, UPS systems, and UPS inverter units |
| Testing of HVDC power supplies for data centers and telecommunications systems |
| Testing of small- and medium-power motor drives |
| Testing of electric drives for drones, power tools, and electric two-wheelers |
| Automotive transient testing using stored test curves for selected requirements from LV123, LV148, DIN 40839, ISO 16750-2, SAE J1113-11, LV124, and ISO 21848 |
| PV array I-V curve simulation using the optional SAS1000 software |
| Single-channel fuel cell simulation using the optional FCS3000 software |
Videos
Links & Downloads
Available Documents (Subject to Change)
Supplier
ITECH is one of the world's largest manufacturers of AC and DC power supplies. The group's diversified product portfolio includes battery testing and power supply test systems. The company's focus is on a competitive price-performance ratio.
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