Laboratory Power Supplies
Delta Elektronika SM6K SERIES Bidirectional DC Power Supply
The Delta Elektronika SM6K Series is a 6kW bidirectional DC power supply that sources and sinks power from a single unit. Its regenerative design returns sink power to the grid, keeping heat dissipation low, and a constant-power output curve extends the usable range of voltage and current combinations. Four models cover outputs from 0–40Vdc at ±...
Read MoreThe Delta Elektronika SM6K Series is a 6kW bidirectional DC power supply that sources and sinks power from a single unit. Its regenerative design returns sink power to the grid, keeping heat dissipation low, and a constant-power output curve extends the usable range of voltage and current combinations. Four models cover outputs from 0–40Vdc at ±450A to 0–1000Vdc at ±18A.
The SM6K switches automatically between source and sink, and full-power two-quadrant operation keeps the DC output voltage constant whichever way power flows. High DC output isolation allows floating operation up to 1000V on every model, and the unit is rated for continuous full-power operation.
Built-in Ethernet supports SCPI programming and monitoring, with an integrated web interface for remote control. Long-life digital encoders with coarse/fine adjustment and full front-panel lock handle local setting. Four plug-and-play slots on the rear panel accept interface modules for isolated analogue programming, Anybus fieldbus (CANopen, EtherCAT, Ethernet/IP, Modbus-TCP, PROFIBUS, PROFINET), serial (RS232, RS485, RS422, USB), digital I/O, isolated contacts and Master/Slave operation. Delta Elektronika has scheduled interface module, sequencer and USB input functionality for a future firmware release.
Typical applications include PV simulation and inverter testing, automotive test systems and battery simulation, controlled battery charge and discharge testing, ATE in industrial production lines, precision current sources, PWM-controlled DC motor testing, renewable-energy systems, plasma chambers, lasers, and aerospace and defence applications.
For higher power, the Delta Elektronika SM15K Series bidirectional power supply applies the same source-and-sink approach at up to 15kW per unit.
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Features
- 6kW bidirectional DC source and sink with full-power two-quadrant operation
- Regenerative design returns sink power to the grid, keeping heat dissipation low
- Constant-power output curve extends the usable voltage and current range
- Automatic source/sink switching holds the DC output voltage constant
- Wide-range three-phase input (380–480Vac) suits 400Vac three-phase supplies
- Built-in Ethernet with SCPI and an integrated web interface for remote programming and monitoring
- High DC output isolation allows floating operation up to 1000V on all models
- Long-life digital encoders with coarse/fine adjustment and full front-panel lock
- Rated for continuous full-power operation
- Protected against overload and short circuit, with output shutdown at the 105% voltage self-protection level and on overtemperature
- Compact 2U, 19-inch rack-mount chassis, with stacking of units allowed
- Fast digital control with tunable load response
- Temperature-controlled fans keep audible noise to approx. 52dBA at full load and 25°C
- EMC performance beyond CE, with low emission and high immunity
- Four rear plug-and-play slots for analogue, fieldbus, serial, digital I/O, contact and Master/Slave modules (functionality planned for a future firmware release)
Specifications
| Output rating | ||||
|---|---|---|---|---|
| Parameter | SM40-CP-450 | SM75-CP-250 | SM330-CP-55 | SM1000-CP-18 |
| Voltage range | 0–40 Vdc | 0–75 Vdc | 0–330 Vdc | 0–1000 Vdc |
| Current range | -450–450 A | -250–250 A | -55–55 A | -18–18 A |
| CV = Constant Voltage; CC = Constant Current; CP = Constant Power. | ||||
| Specifications measured at Tamb = 25 ± 5 °C and Vin = 400 Vac, 3 phase, 50 Hz unless otherwise noted. | ||||
| TBD = To Be Determined. The information in this document is subject to change without notice. | ||||
| Regenerative mode | ||||
|---|---|---|---|---|
| Parameter | SM40-CP-450 | SM75-CP-250 | SM330-CP-55 | SM1000-CP-18 |
| Minimum sink voltage | 400 mV @ -450 A 125 mV @ -150 A 80 mV @ -45 A | 400 mV @ -250 A 130 mV @ -83.3 A 100 mV @ -25 A | tbd mV @ -55 A tbd mV @ -18.3 A tbd mV @ -5.5 A | tbd mV @ -18 A tbd mV @ -6 A tbd mV @ -1.8 A |
| Absolute maximum sink voltage | 42 Vdc | 78 Vdc | tbd Vdc | tbd Vdc |
| Minimum sink current | 0.4 % | 0.4 % | tbd % | tbd % |
| Source / sink transition | Unit switches automatically between source ↔ sink. | |||
| AC Input | ||||
|---|---|---|---|---|
| Parameter | SM40-CP-450 | SM75-CP-250 | SM330-CP-55 | SM1000-CP-18 |
| Rated voltage range | 380–480 Vac | |||
| Rated frequency | 50 / 60 Hz | |||
| Rated current | Maximum 12.2 A | |||
| Current, 6 kW | 9.8 A | |||
| Power factor, 6 kW / 3 kW | 0.995 / 0.988 | |||
| Internal fuses | 15 AT | |||
| Standby input power (Vo=Io=0)(1) | 160 W | |||
| Standby input power (Vo=Vmax)(1) | 185 W | |||
| (1) After 1 hour warm up | ||||
| Efficiency (Sink & Source mode) | ||||
|---|---|---|---|---|
| Parameter | SM40-CP-450 | SM75-CP-250 | SM330-CP-55 | SM1000-CP-18 |
| 6 kW, Iout=100 % | 92 % | 93 % | tbd | tbd |
| 6 kW, Uout=100 % | 95 % | 95 % | tbd | tbd |
| Regulation | ||||
|---|---|---|---|---|
| Parameter | SM40-CP-450 | SM75-CP-250 | SM330-CP-55 | SM1000-CP-18 |
| Load 0–100 %, CV(2) | 1 mV | 2 mV | tbd mV | tbd mV |
| Line 342–528 Vac, CV(2) | 1 mV | 1 mV | tbd mV | tbd mV |
| Load 0–100 %, CC(1,3) | 40 mA | 30 mA | tbd mA | tbd mA |
| Line 342–528 Vac, CC(1,3) | 1 mA | 4 mA | tbd mA | tbd mA |
| (1) After 1 hour warm up | ||||
| (2) Remote voltage sense | ||||
| (3) Local voltage sense | ||||
| Ripple + noise | ||||
|---|---|---|---|---|
| Parameter | SM40-CP-450 | SM75-CP-250 | SM330-CP-55 | SM1000-CP-18 |
| Source mode, measurement condition | 13.3 Vdc / 450 A | 24 Vdc / 250 A | 109 Vdc / 55 A | 333 Vdc / 18 A |
| Source mode, rms (BW = 300 kHz), CV(5) | 2.5 mV | 1.5 mV | tbd mV | tbd mV |
| Source mode, p-p (BW = 20 MHz), CV(5) | 15 mV | 12 mV | tbd mV | tbd mV |
| Source mode, rms (BW = 300 kHz), CC(5) | 35 mA | 20 mA | tbd mA | tbd mA |
| Source mode, measurement condition | 40 Vdc / 150 A | 75 Vdc / 80 A | 330 Vdc / 18.3 A | 1000 Vdc / 6 A |
| Source mode, rms (BW = 300 kHz), CV(5) | 4 mV | 1.5 mV | tbd mV | tbd mV |
| Source mode, p-p (BW = 20 MHz), CV(5) | 25 mV | 12 mV | tbd mV | tbd mV |
| Source mode, rms (BW = 300 kHz), CC(5) | 15 mA | 8 mA | tbd mA | tbd mA |
| Sink mode, measurement condition | 13.3 Vdc / 450 A | 24 Vdc / 250 A | 109 Vdc / 55 A | 333 Vdc / 18 A |
| Sink mode, rms (BW = 300 kHz), CV(5) | 1.6 mV | 1 mV | tbd mV | tbd mV |
| Sink mode, p-p (BW = 20 MHz), CV(5) | 15 mV | 10 mV | tbd mV | tbd mV |
| Sink mode, rms (BW = 300 kHz), CC(5) | 40 mA | 30 mA | tbd mA | tbd mA |
| Sink mode, measurement condition | 40 Vdc / 150 A | 75 Vdc / 80 A | 330 Vdc / 18.3 A | 1000 Vdc / 6 A |
| Sink mode, rms (BW = 300 kHz), CV(5) | 2.5 mV | 1.5 mV | tbd mV | tbd mV |
| Sink mode, p-p (BW = 20 MHz), CV(5) | 20 mV | 12 mV | tbd mV | tbd mV |
| Sink mode, rms (BW = 300 kHz), CC(5) | 25 mA | 15 mA | tbd mA | tbd mA |
| (5) Measured at full load | ||||
| Programming & monitoring accuracy | ||||
|---|---|---|---|---|
| Parameter | SM40-CP-450 | SM75-CP-250 | SM330-CP-55 | SM1000-CP-18 |
| Voltage(4) | ± 0.08 % | |||
| Current(4) | ± 0.15 % | |||
| (4) Excluding INT-MOD-ANA | ||||
| Temperature coefficient, per °C | ||||
|---|---|---|---|---|
| Parameter | SM40-CP-450 | SM75-CP-250 | SM330-CP-55 | SM1000-CP-18 |
| CV(1,5) | 15 ppm | 20 ppm | tbd | tbd |
| CC(1,5) | 40 ppm | 40 ppm | tbd | tbd |
| (1) After 1 hour warm up | ||||
| (5) Measured at full load | ||||
| Stability over 8 hours | ||||
|---|---|---|---|---|
| Parameter | SM40-CP-450 | SM75-CP-250 | SM330-CP-55 | SM1000-CP-18 |
| 25 ± 1 °C, CV(1,5) | 45 ppm | 35 ppm | tbd | tbd |
| 25 ± 1 °C, CC(1,3,5) | 40 ppm | 85 ppm | tbd | tbd |
| (1) After 1 hour warm up | ||||
| (3) Local voltage sense | ||||
| (5) Measured at full load | ||||
| Programming speed | ||||
|---|---|---|---|---|
| Parameter | SM40-CP-450 | SM75-CP-250 | SM330-CP-55 | SM1000-CP-18 |
| Rise time (10–90 %)(6,7), output voltage step | 0 → 13.3 Vdc | 0 → 24 Vdc | 0 → 109 Vdc | 0 → 333 Vdc |
| Rise time (10–90 %)(6,7), load = 6 kW | 0.6 ms | 1.5 ms | tbd ms | tbd ms |
| Rise time (10–90 %)(6,7), load = 600 W | 0.6 ms | 1.1 ms | tbd ms | tbd ms |
| Rise time (10–90 %)(6,7), output voltage step | 0 → 40 Vdc | 0 → 75 Vdc | 0 → 330 Vdc | 0 → 1000 Vdc |
| Rise time (10–90 %)(6,7), load = 6 kW | 2.8 ms | 4.6 ms | tbd ms | tbd ms |
| Rise time (10–90 %)(6,7), load = 600 W | 1.9 ms | 3.2 ms | tbd ms | tbd ms |
| Fall time (90–10 %)(6,7), output voltage step | 13.3 → 0 Vdc | 24 → 0 Vdc | 109 → 0 Vdc | 333 → 0 Vdc |
| Fall time (90–10 %)(6,7), load = 6 kW | 0.5 ms | 1.1 ms | tbd ms | tbd ms |
| Fall time (90–10 %)(6,7), load = 600 W | 0.5 ms | 1.1 ms | tbd ms | tbd ms |
| Fall time (90–10 %)(6,7), output voltage step | 40 → 0 Vdc | 75 → 0 Vdc | 330 → 0 Vdc | 1000 → 0 Vdc |
| Fall time (90–10 %)(6,7), load = 6 kW | 1.4 ms | 2.4 ms | tbd ms | tbd ms |
| Fall time (90–10 %)(6,7), load = 600 W | 1.8 ms | 3.0 ms | tbd ms | tbd ms |
| (6) Measured on resistive load with power supply in CV mode, different conditions may influence the specified speed. | ||||
| (7) Signal latency depends on the interface used & data traffic. | ||||
| Recovery time | ||||
|---|---|---|---|---|
| Parameter | SM40-CP-450 | SM75-CP-250 | SM330-CP-55 | SM1000-CP-18 |
| Condition(8,9) | 13.3 Vdc, 225 → 450 A | 24 Vdc, 125 → 250 A | 109 Vdc, 28 → 55 A | 333 Vdc, 9 → 18 A |
| Recovery within(8,9) | 100 mV | 100 mV | tbd mV | tbd Vdc |
| di/dt of load step(8,9) | 5 A/µs | 3 A/µs | tbd A/µs | tbd A/µs |
| Time(8,9) | 130 µs | 100 µs | 100 µs | 100 µs |
| Maximum deviation(8,9) | 0.6 Vdc | 0.4 Vdc | tbd Vdc | tbd Vdc |
| Condition(8,9) | 40 Vdc, 75 → 150 A | 75 Vdc, 40 → 80 A | 330 Vdc, 9 → 18 A | 1000 Vdc, 3 → 6 A |
| Recovery within(8,9) | 100 mV | 100 mV | tbd mV | tbd Vdc |
| di/dt of load step(8,9) | 2 A/µs | 0.9 A/µs | tbd A/µs | tbd A/µs |
| Time(8,9) | 75 µs | 100 µs | 150 µs | 150 µs |
| Maximum deviation(8,9) | 0.25 Vdc | 0.15 Vdc | tbd Vdc | tbd Vdc |
| (8) Local voltage sense. | ||||
| (9) Remote sensing and long wiring may influence the values. | ||||
| DC output capacitance | ||||
|---|---|---|---|---|
| Parameter | SM40-CP-450 | SM75-CP-250 | SM330-CP-55 | SM1000-CP-18 |
| X-capacitors(10) | 21 mF | 9 mF | tbd µF | tbd µF |
| Y-capacitors(10) | 860 nF | 860 nF | tbd nF | tbd nF |
| X-cap bleeder resistor(10) | 1.6 kΩ | 3.2 kΩ | tbd kΩ | tbd kΩ |
| Y-cap bleeder resistor(10) | 10 MΩ | 10 MΩ | tbd MΩ | tbd MΩ |
| (10) Typical | ||||
| Output impedance | ||||
|---|---|---|---|---|
| Parameter | SM40-CP-450 | SM75-CP-250 | SM330-CP-55 | SM1000-CP-18 |
| 0–1 kHz, CV(10) | < 1.5 mΩ | < 2 mΩ | < tbd mΩ | < tbd mΩ |
| 1–100 kHz, CV(10) | < 30 mΩ | < 40 mΩ | < tbd mΩ | < tbd mΩ |
| (10) Typical | ||||
| Pulsating load | ||||
|---|---|---|---|---|
| Parameter | SM40-CP-450 | SM75-CP-250 | SM330-CP-55 | SM1000-CP-18 |
| Max. tolerable AC component of load current, f > 1 kHz | 85 Arms | 60 Arms | tbd Arms | tbd Arms |
| Max. tolerable AC component of load current, f < 1 kHz | 450 Apk | 250 Apk | tbd Apk | tbd Apk |
| Hold-up time | ||||
|---|---|---|---|---|
| Parameter | SM40-CP-450 | SM75-CP-250 | SM330-CP-55 | SM1000-CP-18 |
| Vout = 100 %, Pout = 6 kW | 7.5 ms | 7.5 ms | tbd ms | tbd ms |
| Iout = 100 %, Pout = 6 kW | 7.5 ms | 7.5 ms | tbd ms | tbd ms |
| Vout = 100 %, Pout = 3 kW | 9.5 ms | 9.5 ms | tbd ms | tbd ms |
| Turn on delay | ||||
|---|---|---|---|---|
| Parameter | SM40-CP-450 | SM75-CP-250 | SM330-CP-55 | SM1000-CP-18 |
| Output power available(11) | 10 s after mains switch is turned on | |||
| (11) Unit should be configured to switch on the output at startup | ||||
| Inrush current | ||||
|---|---|---|---|---|
| Parameter | SM40-CP-450 | SM75-CP-250 | SM330-CP-55 | SM1000-CP-18 |
| Inrush current(10) | 30 A | |||
| (10) Typical | ||||
| Safety standards | ||||
|---|---|---|---|---|
| Parameter | SM40-CP-450 | SM75-CP-250 | SM330-CP-55 | SM1000-CP-18 |
| Safety standard | EN 61010-1 | |||
| Insulation | ||||
|---|---|---|---|---|
| Parameter | SM40-CP-450 | SM75-CP-250 | SM330-CP-55 | SM1000-CP-18 |
| AC / DC terminals | 3750 Vrms (1 min.) | |||
| Creepage / clearance | 8 mm | |||
| AC power terminals / case | 2500 Vrms | |||
| DC power terminals / case(12) | 1000 Vdc | |||
| (12) See "Safety Instructions" in the product manual. | ||||
| EMC | ||||
|---|---|---|---|---|
| Parameter | SM40-CP-450 | SM75-CP-250 | SM330-CP-55 | SM1000-CP-18 |
| Emission | EN 61326-1, class B equipment (for use in domestic establishments) | |||
| Immunity | EN 61326-1, equipment for use in industrial and domestic establishments | |||
| Environmental conditions | ||||
|---|---|---|---|---|
| Parameter | SM40-CP-450 | SM75-CP-250 | SM330-CP-55 | SM1000-CP-18 |
| Storage temperature | -40 to +70 °C | |||
| Operating temperature | -20 to +50 °C Derate output to 75 % at 60 °C | |||
| Overtemperature | Output automatically disabled at overtemperature | |||
| Humidity | Maximum 95 % RH, non-condensing, up to 40 °C Maximum 75 % RH, non-condensing, up to 50 °C | |||
| IP Rating | IP20 | |||
| Pollution degree | 2 | |||
| MTBF | ||||
|---|---|---|---|---|
| Parameter | SM40-CP-450 | SM75-CP-250 | SM330-CP-55 | SM1000-CP-18 |
| MTBF | 500,000 hrs | |||
| Series operation | ||||
|---|---|---|---|---|
| Parameter | SM40-CP-450 | SM75-CP-250 | SM330-CP-55 | SM1000-CP-18 |
| Master / slave operation | Series operation not allowed | |||
| Parallel operation | ||||
|---|---|---|---|---|
| Parameter | SM40-CP-450 | SM75-CP-250 | SM330-CP-55 | SM1000-CP-18 |
| Master / slave operation | tbd | |||
| Remote sensing | ||||
|---|---|---|---|---|
| Parameter | SM40-CP-450 | SM75-CP-250 | SM330-CP-55 | SM1000-CP-18 |
| Maximum voltage drop per load lead | Default 1 Vdc, can be set to 10 Vdc | |||
| Limits | ||||
|---|---|---|---|---|
| Parameter | SM40-CP-450 | SM75-CP-250 | SM330-CP-55 | SM1000-CP-18 |
| Adjustable voltage | 0–101 % | |||
| Adjustable current | 0–101 % | |||
| Adjustable power | 0–101 % | |||
| Fixed voltage overload level | 102.5 % - unit will continue to operate (OL-indication in display) | |||
| Fixed voltage self-protection level | 105 % - output is automatically disabled (PROT-indication in display) | |||
| Potentiometers | ||||
|---|---|---|---|---|
| Parameter | SM40-CP-450 | SM75-CP-250 | SM330-CP-55 | SM1000-CP-18 |
| Front panel control knob resolution | 15 bits | |||
| Meter scale | ||||
|---|---|---|---|---|
| Parameter | SM40-CP-450 | SM75-CP-250 | SM330-CP-55 | SM1000-CP-18 |
| Display | 4 digits | |||
| Voltage | 0.00–40.00 Vdc | 0.0–75.0 Vdc | 0.0–330.0 Vdc | 0–1000 Vdc |
| Current | -450.0–450.0 A | -250.0–250.0 A | -55.0–55.0 A | -18.00–18.00 A |
| Power | -6000–6000 W | |||
| Accuracy read output | 0.2 % + 2 digit | |||
| Mounting | ||||
|---|---|---|---|---|
| Parameter | SM40-CP-450 | SM75-CP-250 | SM330-CP-55 | SM1000-CP-18 |
| Mounting | Stacking of units allowed | |||
| AC terminals (CON A) | ||||
|---|---|---|---|---|
| Parameter | SM40-CP-450 | SM75-CP-250 | SM330-CP-55 | SM1000-CP-18 |
| Connection | Screw terminals for wire 4 mm², 3 phase + earth (no neutral) | |||
| DC terminals (CON B1 & B2) | ||||
|---|---|---|---|---|
| Parameter | SM40-CP-450 | SM75-CP-250 | SM330-CP-55 | SM1000-CP-18 |
| Connection | M12 bolts | M12 bolts | M8 bolts | M8 bolts |
| Programming connectors (LAN) | ||||
|---|---|---|---|---|
| Parameter | SM40-CP-450 | SM75-CP-250 | SM330-CP-55 | SM1000-CP-18 |
| Connection | Standard with RJ45-connector for Ethernet, 1000 Mb/s, full-duplex | |||
| Interlock (CON F) | ||||
|---|---|---|---|---|
| Parameter | SM40-CP-450 | SM75-CP-250 | SM330-CP-55 | SM1000-CP-18 |
| Interlock | Input for external floating contact | |||
| Cooling | ||||
|---|---|---|---|---|
| Parameter | SM40-CP-450 | SM75-CP-250 | SM330-CP-55 | SM1000-CP-18 |
| Cooling | Low noise, fan speed adapts to temperature of internal system | |||
| Audio noise level | ca. 52 dBA at full load, 25 °C ambient temperature, 1 m distance ca. 66 dBA at full load, 50 °C ambient temperature, 1 m distance | |||
| Airflow direction | From left to right | |||
| Thermal protection | Output shuts down in case of insufficient cooling (over temperature indication in display) | |||
| Dimensions | ||||
|---|---|---|---|---|
| Parameter | SM40-CP-450 | SM75-CP-250 | SM330-CP-55 | SM1000-CP-18 |
| Front panel: h x w | 88.1 x 483 mm (19", 2 U) | |||
| Behind front panel: h x w x d | 86 x 448 x 586 mm (excluding feet) | |||
| Optional interfaces | No additional depth is required with optional interfaces assembled | |||
| Weight | ||||
|---|---|---|---|---|
| Parameter | SM40-CP-450 | SM75-CP-250 | SM330-CP-55 | SM1000-CP-18 |
| Weight | 16 kg | |||
| Typical Applications | |
|---|---|
| PV | PV simulation and inverter testing |
| Automotive | Automotive test systems Automotive battery simulation |
| Battery testing | Controlled battery (dis)charge test |
| Industrial production | ATE in industrial production lines |
| Current sources | Precision current sources |
| DC motors | PWM-controlled DC motor testing |
| Energy | Renewable-energy systems |
| Other applications | Plasma chambers Lasers Aerospace applications Defence / military applications |
| Standard Features | |
|---|---|
| Bi-Directional Two-Quadrant Output | Full-power bidirectional two-quadrant operation keeps the DC output voltage constant whether power is sourced or sunk. |
| Digital CV- and CC- Settings | Long-life digital encoders on the front panel provide precise CV/CC setting with coarse/fine adjustment and full front-panel lock (including CV/CC knobs). |
| High Voltage Isolation | A high DC output isolation allows floating operation up to 1000 Vdc for all types. |
| Sequencer | Arbitrary Waveform generator or standalone automation. Sequencer functionality is planned for a future firmware release. |
| Ethernet Interface | Ethernet interface for programming and monitoring (SCPI), including an integrated web interface for remote control. |
| USB-Input | Front and rear USB inputs are intended for exchanging settings and waveform files. Sequences can be uploaded via the web interface. USB input functionality is planned for a future firmware release. |
| Interfaces | |
|---|---|
| Plug-and-play extension modules | Four slots are available at the rear of the power supply unit. See the Interfaces data sheet for details. Interface module functionality is planned for a future firmware release. |
| Isolated Analog programming (INT-MOD-ANA) | High speed and accurate analog programming and monitoring. |
| Anybus-carrier (INT-MOD-ANY) | Carrier for AnyBus CompactCom 40 fieldbus inserts: CANopen, EtherCAT, Ethernet/IP, Modbus-TCP, PROFIBUS, PROFINET. |
| Digital I/O (INT-MOD-DIG) | Interacts with sequencer and Ethernet programming. |
| Isolated contacts (INT-MOD-CON) | Programmable relays and floating interlock. |
| Serial communication (INT-MOD-SER) | RS232, RS485, RS422, USB. |
| Master/Slave (INT MOD M/S-2) | Series/parallel output functionality. |
Selection Table
| Model | Output Voltage (Vdc) | Output Current (A) | Output Power (W) |
|---|---|---|---|
| SM40-CP-450 | 0–40 | -450–450 | 6000 |
| SM75-CP-250 | 0–75 | -250–250 | 6000 |
| SM330-CP-55 | 0–330 | -55–55 | 6000 |
| SM1000-CP-18 | 0–1000 | -18–18 | 6000 |
Warranty & Returns
Warranty periods vary by product. Please refer to the Powerbox Warranty Policy for the applicable coverage period against manufacturing defects from date of purchase. For returns and RMA requests, please visit our RMA support page or contact our support team directly.
FAQs
The SM6K Series includes four models: SM40-CP-450 (0–40Vdc, ±450A), SM75-CP-250 (0–75Vdc, ±250A), SM330-CP-55 (0–330Vdc, ±55A) and SM1000-CP-18 (0–1000Vdc, ±18A). All four deliver 6kW of bidirectional DC power with a constant-power output curve.
The SM6K operates as both a DC source and a DC sink at full rated power. In source mode it delivers power to the load; in sink mode it absorbs power from the load and returns it to the AC mains through its regenerative design. The unit switches automatically between source and sink and keeps the DC output voltage constant either way, which suits controlled battery charge/discharge testing, PWM-controlled DC motor testing and PV inverter testing.
Instead of dissipating sink power as heat, the SM6K feeds it back into the three-phase AC mains. High efficiency (up to 95% at 6kW on the SM40-CP-450 and SM75-CP-250) keeps heat dissipation in the test area low.
The SM6K needs a three-phase supply rated at 380–480Vac, 50/60Hz, connected as three phases plus earth with no neutral. Maximum rated input current is 12.2A (9.8A at 6kW), and power factor is 0.995 at 6kW and 0.988 at 3kW. Line regulation is specified across 342–528Vac.
The SM6K includes a built-in Ethernet interface (RJ45, 1000Mb/s, full-duplex) with SCPI command support and an integrated web interface for remote programming and monitoring. Four rear-mounted plug-and-play slots accept optional interface modules: isolated analogue (INT-MOD-ANA), Anybus carrier for CANopen, EtherCAT, Ethernet/IP, Modbus-TCP, PROFIBUS and PROFINET (INT-MOD-ANY), serial RS232/RS485/RS422/USB (INT-MOD-SER), digital I/O (INT-MOD-DIG), isolated contacts (INT-MOD-CON) and Master/Slave (INT-MOD-M/S-2). Interface module functionality is planned for a future firmware release. Series operation is not allowed, and parallel operation specifications are still to be confirmed by Delta Elektronika.
The SM6K meets EN 61010-1 for safety, EN 61326-1 class B for emissions (equipment for use in domestic establishments) and EN 61326-1 for immunity (equipment for use in industrial and domestic establishments). AC-to-DC terminal insulation is rated at 3750Vrms for one minute. The unit is rated IP20, pollution degree 2.
The SM6K operates from -20 to +50°C, with output derated to 75% at 60°C. The output is disabled automatically at overtemperature. Storage temperature is -40 to +70°C, and humidity is up to 95% RH non-condensing at 40°C, or 75% RH at 50°C.
The SM6K is a 2U, 19-inch rack-mount unit. The front panel measures 88.1 x 483mm, and the chassis behind the front panel measures 86 x 448 x 586mm (excluding feet). Weight is 16kg. Units can be stacked, and no additional depth is needed when optional interface modules are fitted.
The SM6K suits PV simulation and inverter testing, automotive test systems and battery simulation, controlled battery charge/discharge testing, ATE in industrial production lines, precision current sources, PWM-controlled DC motor testing, renewable-energy systems, plasma chambers, lasers, and aerospace and defence applications. For application-specific guidance, contact Powerbox Pacific at sales@powerbox.co.nz.
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- 0 - 4A to 0- 80A
- Low Output Ripple
- Stable Output Voltage
- Stable Current
- Programming Option
Delta Elektronika SM1500 SERIES Laboratory Power Supply
- 1500W Laboratory
- 0 - 15V to 0 - 400V
- 0 - 6A to 0 - 100A
- Low Output Ripple
- Stable Output Voltage
- Stable Current
- Programming
- Master/Slave
Delta Elektronika SM3300 SERIES Laboratory Power Supply
- 3300W Laboratory
- 0 -18V to 0 - 660V
- 0 - 11A to 0 - 220A
- Auto Ranging output Low Output Ripple
- Software control
- Long Life