Rectifier DC/DC converter GR-3880

galvanically-isolatedhigh-voltagechassis-mounted

Product overview
The GR-3880 is a bidirectional DC power supply/rectifier designed for 2-quadrant operation. Regenerative energy is fed back into the AC network without additional switching. The unit comprises two IGBT rectifiers that can be used individually, in series or in parallel and provide constant voltages of 600–750 VDC or, depending on operating mode, 1200–1500 VDC (with a fully loadable midpoint). A separate isolation transformer ensures galvanic separation between DC and AC networks. Configuration and operation are available via Modbus TCP/IP or VNC for straightforward integration and adaptation.

Scope of application

• Internal DC networks in industrial buildings / supply of DC consumers
• 3-level converter applications
• DC-operated plants and machines
• Power supply for E-motor emulators and other high-voltage applications (600–1500 V DC)

General data / Features

• Rectifier design: IGBT, PWM, galvanically isolated
• Cooling: liquid cooling (WF)
• Overload-capable design
• Available operating voltages: 600–750 V DC or 1200–1500 V DC (with fully loadable midpoint)
• Can be used as two individually configurable rectifiers; configurable in series or parallel

Safety features

• Safety switching device according to EN ISO 13849-1, performance level c
• AC load isolation switch
• Terminals for external emergency stop
• Two analogue voltmeters mounted in the cabinet door
• DC outputs potential-separated from the AC network and from each other (galvanic isolation)
• Indicator lamp for operation
• One insulation monitor per output channel

Interfaces

• Modbus TCP/IP
• VNC via Ethernet

Application diagrams and images
Electrical schematic and application diagram images (system wiring and application examples for power supply) are provided on the product page.

Technical specifications

• Mains voltage: 3/PE AC 400 V / 380 V ±10 % (At rated voltage 380 V the nominal power including overload is reduced by 5 %)
• Rated power (table entry): 300 kW
• Overload: 320 kW for 30 seconds, every 5 minutes
• Output current per output channel UDCmin: 250 A
• Output current per output channel UDCmax: 200 A
• Measurement accuracy: Voltage: 16 bit; Current: 16 bit
• Control accuracy: Voltage: 0.4 % fs; Current: 3 % fs
• Residual ripple on resistive load: < 0.5 % fs
• Permissible environmental conditions (according to EN 60721): Storage EN 60721-3-1 (long term), Transport EN 60721-3-2 (short term), Operation EN 60721-3-3; codes shown on page: 1K21 / 1M11 +5 to +40 °C; 2K12 / 2M4 -25 to +70 °C; 3K22 / 3M11 +5 to +40 °C
• Dimensions (W x D x H): 1600 x 800 x 2200 mm
• Cooling method: WF (liquid cooling)
• Safety of machinery: EN 60204-1 (with noted exceptions), Safety switching device according to EN ISO 13849-1