PxtRX
ACTIVE ENERGY MANAGEMENT DEVICES WITH EXTERNAL STORAGE
PxtRX
The PxtRX is predestined for applications in conjunction with higher energy density storage devices, such as double layer capacitors or batteries.
Spotlight
Max. Operating voltage UZmax according to UL
848 VDC
Max. Operating voltage UZmax according to IEC
1000 VDC
Max. Energy Storage current Ic
30 A (IEC) continuous
27 A (UL) continuous
Max. Peak power Pmax
27.0 kW (UL) / 48 kW (IEC) peak
Max. Continuous output Pmax
13.5 kW (UL) / 24 kW (IEC) continuous
Contact
Michael Koch GmbH
Phone: +49 7251 96 26-200
| Criteria | PxtRX |
|---|---|
| Weight | 10.0 kg (stand alone) |
| Dimensions H x W x D | 380 x 105 x 217 mm |
| Protection class | IP 20 |
| Ambient temperature | -10°C up to +65°C (transport, storage) |
| 0°C up to +40°C (in operation) | |
| Humidity | ≤ 95% (transport, storage) |
| ≤ 85% (in operation) | |
| Cooling | Forced air cooling via fan. Forced air cooling via fan. Operation in relation to heat sink temperature. Adjustable, e.g. for UPS application |
| Limitation for installations in elevated areas | < 2000 m NN: No limitations / overvoltage category III |
| > 2000 m NN: reduction of performance / overvoltage category II | |
| Min. starting voltage level for the system (DC link or Energy storage) | approx. 45 VDC |
| Min. Operating voltage level UZmin | 180 VDC (Wake-Up-Phase: UZStart 48-180 VDC) |
| Max. Operating voltage level UZmax | 848 VDC (UL) / 1000 VDC (IEC) |
| Max. Operating voltage level UCmax | 450 VDC (UL) / 800 VDC (IEC) |
| Operation conditions | UZ > UC. Otherwise immediate stop = safe separation of DC link from energy storage |
| 24 VDC In | Galvanically isolated. For communication tasks with PxtRX without connecting it to DC link or energy storage e.g. for setting parameters at the desk (Note: not protected against polarity reversal) |
| Energy of integrated capacities | 0 kJ |
| External capacities | PxtEX (UL) in steps of 2 kJ DLCM (Double-Layer Capacitor Module) Batteries No limitation of capacities |
| Max. Energy Storage current Ic | 27 A (UL) continuous |
| 30 A (IEC) continuous | |
| 60 A peak for 45s (Ieff = 30 A at tcycle = 180s) | |
| Ground rule for power flow | PC = PZ |
| Max. Power Pmax | 13.5 kW (UL) / 24 kW (IEC) continuous |
| 27.0 kW (UL) / 48 kW (IEC) peak | |
| Operation frequency level | 15 kHz, in operation load-dependent reduction down to 7.5 kHz Adjustable up to 18 kHz (with power reduction) |
| Load monitoring | DC link side and energy storage side (in each case I²t) |
| Connection DC link | Front, top |
| Connection Energy storage | Front, bottom |
| Communication | 3 digital inputs 3 digital outputs K-Bus interface for operating data output 4 LEDs SD-Card Reset button for restart Boot button for boot loading from SD card Option: PxtMX plug-on module for fieldbus communication etc. |
| Firmware-Updates | On Koch company site (Fabrikle) or With SD-Card at customers site or Via PxtCC (USB K-Bus interface) with PC |
| Protection | Internal fuses. External capacities have to be fused separately. |
| Precharging circuit | Connection directly to DC link interference-free possible, independent from further precharging circuits |
| Reverse polarity protection | To DC link: In case connecting with reverse polarity PxtRX blocks and disconnects the DC link side from energy storage side |
| Charging protection | To DC link |
| Charging protection switch LSS | Connection of charged Energy storage modules interference-free possible (But: No protection against connecting with reverse polarity!) |
| Max. cable length to DC link | 20 m |
| Max. cable length to energy storage modules | 20 m |
| Parallel operation | Theoretically unlimited number of devices Self-adjusting Automated Master-/Slave-setting for communication |
| Retrofit | Can be retrofitted into existing systems |
| Typeplate/Device information | Electronic via QR-Code: Further device specific information Management-features |
| Internal digital storage | Operation hours meter |
| Capacity monitoring | Parameterizable |
The PxtRX is designed for a current load capacity of 30 Ampere continuous and 60 Ampere peak for 45 seconds. In combination with a high storage voltage of up to 800 Volt DC, the device is able to generate a power of almost 50 kilowatts.
If this power is not sufficient for your application, several PxtRX devices, like the PxtFX devices, can be connected in parallel. Depending on the application, active energy management systems can thus be created that fill large control cabinets. We offer ready-to-connect complete systems in control cabinets under the type designation KTS.
These include active energy management devices of the Pxt family, application-specific storage units, the appropriate fuses, cabling and, depending on the storage units used, passive or active dischargers. One feature is particularly helpful for the PxtRX in such KTS control cabinet solutions: It also works trouble-free with cable lengths to the DC link of up to 20 meters.
The PxtRX is the big brother of the PxtFX and is suitable for any application in connection with higher energy density storage units such as double layer capacitors or batteries.
The applications are manifold, the devices provide benefits through a single feature or through the combination of two or more features. The first thing that comes to mind is the recuperation of the machine’s braking energy, which increases energy efficiency.
Often, however, other benefits play a greater role than increasing energy efficiency, such as the compensation of so-called brownouts, safe and defined standstill during blackouts, the possible acceleration of production processes with output increases of up to 50 percent, the reduction of network load peaks or even the operation of the electric drive independently of the power grid.
Video about the active energy management devices PxtRX of Michael Koch GmbH:
