Kikusui DC Power Supply PXT Series

The PXT series is a high-performance, large-capacity, wide-range DC power supply that achieves a maximum Output rating of 20 kW in a mere 3U size. Variable internal resistance, bleeder ON/OFF function, Output ON / OFF In addition to the delay function, communication interfaces (LAN, USB, and RS232C as standard) are also provided.

It can be used not only as a stand-alone device, but also for integration into test equipment. Furthermore, its excellent heat dissipation design enables it to achieve a guaranteed Operating temperature of 50°C, making it suitable for harsh high-temperature operating environments. The system is also highly scalable, and its capacity can be increased up to 500 kW through Parallel operation (up to 25 units).

Kategori: DC Power Supply, Kikusui

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Features

Output power range 2.25 to 3x ratio power type operating
Low Ripple Noise
Excellent Versatility Thanks to Wide-Range Output
Excellent Transient response
Optimized for different purposes and applications, with selectable response speeds
Equipped with touch panel display

Bleeder ON/OFF Function

By turning on the bleeder function, the charge accumulated on the load side at the time of OUTPUTOFF can be quickly discharged to lower the Output voltage.
A battery connected to the output terminal will be discharged when the bleeder function is on, even if the OUTPUT is turned off. In such cases, unnecessary discharge can be prevented by turning the bleeder function off.

Item	Description
Enable	Turns the bleeder function on. Sink current flows when the output is off.
Disable	Disables the bleeder function. Prevents unintended discharge when output is turned off. However, a low sink current will still flow due to the resistance inside the PXT series. The reference values of the internal resistance are as follows: PXT20K-500: approx. 55 kΩ PXT20K-1500: approx. 560 kΩ

Priority Operation Mode

It is possible to set which Operation mode is used when the output is turned on. When a battery or power supply is connected, overshoot can be prevented by giving priority to CC mode.
Operation modes that can be set: Constant voltage (CV), Constant current (CC), Constant power (CP) mode

Faster no load fall time

The PXT series has a no load fall time of 750 ms. This contributes to shorter takt time.

External Control Function

EXT of rear panel The PXT series can be controlled by external devices using the CONT connector. The general-purpose digital input terminal and the general-purpose digital output terminal can be assigned any functions, facilitating system construction in combination with other measurement devices.
Digital I/O standard for both NPN and PNP type PLCs. Analog I/O is isolated from output terminals as standard, allowing safe analog control from PLC.

External Control Function

The general-purpose isolated digital input terminals are available from Ch.1 to Ch.5. Any setting value can be selected from the items listed at right.

The general-purpose isolated digital output pins are available from Ch.1 to Ch.6. Any setting value can be selected from the items listed at right.

General-purpose isolated digital input terminals are available from Ch.1 to Ch.6.

Sequence function

Pre-defined actions can be executed continuously. A total of 30 programs can be created, and the Maximum number of steps can be up to 10,000 for all programs. Programs stored in the main unit’s memory can be exported to USB memory from the front panel.

Sequence function

Variable internal resistance feature

This function changes the Output voltage value according to the Output current value based on the set resistance value in constant voltage operation. Internal resistance of rechargeable batteries, wire harnesses, etc. can be simulated in a simplified manner.

Variable internal resistance feature

Variable internal resistance - Table

I-V characteristic function

By registering multiple arbitrary points on the I-V characteristics, arbitrary I-V characteristics can be set for each CC and CV operation mode. Since 3 to 100 arbitrary points can be registered, it is possible to simulate I-V characteristics of rechargeable batteries, etc.

I-V characteristic function

Parallel operation can realize up to 25 units, 500 kW. *

Up to 25 units (500 kW) can be connected in parallel, including the master unit. The connection is a Master-slave parallel operation, and the panel of the master unit can control and display the entire system. Since it has an automatic recognition function, a large-capacity system can be constructed without complicated settings.

* Parallel operation is possible between models with different input rated voltages.
★ Please consult with us if you would like to use 10 or more units in Parallel operation.

Rack mounted image

Selectable power input

Full output at rated power regardless of input voltage. Choose from 3-phase 3-wire 200 V or 400 V models. No output limitation for either input voltage.

Selectable power input

Reliable and solid performance even under high temperatures

Solid performance under operating temperatures of 0°C to 50°C (32 °F to 122 °F). Full performance even in harsh ambient temperature environments, such as when installed in equipment.

Reliable performance

Protection Functions for Safety Operation

OVP (Over Voltage Protection)
UVP (Under Voltage Protection)
WDOG (Communication error protection)
OPP (Over Power Protection)
OCP (Over Current Protection)
EXT LOW (External input alarm detection)

Equipped with Standard LAN Interface and VMCB Function

The PXT series comes standard with LAN, USB, and RS232C as communication interfaces. In addition, when used in conjunction with Virtual Multichannel (VMCB), which enables virtual grouping and management of multiple PXT series units, the PXT series can efficiently perform not only 1-to-N, but also N-to-M and large-scale networked remote control and monitoring. This can be utilized to save communication ports or to match the control timing of multiple (up to 8) PXT series units. Multichannel can also be used to mix and match our PXB series as well.

When connecting the VMCB master unit via LAN

Communication monitoring function

Communication monitoring function is provided. For example, if the LAN cable is disconnected and communication is not established, an alarm (alarm lamp lights up) and Turns the output off if there is no communication within a set period of time. This function prevents operation in an uncontrolled state and improves system reliability.

Schematic LAN network configuration with the PXT series

Security for LAN connections

Access to the built-in web server can be restricted with a password. Also, when using VXI-11, HiSLIP, and SCPI-RAW for control, host restrictions can be set with the IP address. It is possible to prevent access from any terminal other than the ones registered as a host (up to 4 hosts can be registered).

Rear Panel

Specifications

Specifications	Output			Ripple	Line regulation		Load regulation		Input current	Weight
Model	CV	CC	Rated power	CV	CV	CC	CV	CC	AC (200 V 3-phase) / (400 V 3-phase)	Approx.
PXT20K-500 3P3W 200V (20kW / 500V / 120A / Input voltage 200V)	0 to 500 V	120 A	20 kW	100 mVrms	±100 mV	±240 mA	±250 mV	±240 mA	80 A	38 kg (83.78 lbs)
PXT20K-500 3P3W 400V (20kW / 500V / 120A / Input voltage 400V)	0 to 500 V	120 A	20 kW	100 mVrms	±100 mV	±240 mA	±250 mV	±240 mA	40 A	38 kg (83.78 lbs)
PXT20K-1000 3P3W (20kW / 1000V / 60A / Input voltage 200V)	0 to 1000 V	60 A	20 kW	250 mVrms	±200 mV	±120 mA	±750 mV	±120 mA	80 A	38 kg (83.78 lbs)
PXT20K-1000 3P3W (20kW / 1000V / 60A / Input voltage 400V)	0 to 1000 V	60 A	20 kW	250 mVrms	±200 mV	±120 mA	±750 mV	±120 mA	40 A	38 kg (83.78 lbs)
PXT20K-1500 3P3W(20kW / 1500V / 30A / Input voltage 200V)	0 to 1500 V	30 A	20 kW	300 mVrms	±300 mV	±60 mA	±750 mV	±60 mA	80 A	37 kg (81.57 lbs)
PXT20K-1500 3P3W(20kW / 1500V / 30A / Input voltage 400V)	0 to 1500 V	30 A	20 kW	300 mVrms	±300 mV	±60 mA	±750 mV	±60 mA	40 A	37 kg (81.57 lbs)