KIKUSUI PAT-T Series High-Efficiency, High-capacitySwitching DC Power Supply (CV/CC)

Save precious testing laboratory space!

[Size comparison]
Comparison between PAT-T (8 kW) and previous Kikusui product (7 kW)

Optional vertical stand!

Optional vertical stand for easy transportation and table side operation. Compatible with all PAT-T series models. Caster- equipped frame and handle kit included./p>

*PAT-T series main unit is not included.

Soft switching system

The PAT-T power supply circuit system skillfully utilizes resonance when executing power device switching when the voltage or current is at zero. This allows the unit to operate without switching loss or transient crossover of voltage and current. Switching that occurs at 0V is known as “zero voltage switching” (ZVS), while switching at zero current is referred to as “zero current switching” (ZCS). With conventional power supply circuits, problems such as increased power loss and diminishing efficiency occur when switching speed increases. However, a soft-switching system utilizes highly efficient power supply circuits that reduce heat loss and allow for for smaller circuitry, resulting in compact chassis size as well as minimal noise generation.

Power factor correction circuit

The power factor (PF) values indicates the efficiency of an AC circuit, referring to the ratio of effective power to apparent power. The closer the power factor is to 1, the more efficient the equipment (circuit) is in its electrical power usage. Incorporating a power factor correction circuit corrects AC voltage and current phase differences (waveform deviations causing reactive power), improving electrical power efficiency. Specific advantages include the following:

• Increased energy efficiency.
• Downsizing of power reception and distribution modules.
• Improved power supply environment.
• Reduces transmission loss.
• Vastly reduces noise emissions.

Parallel operation up to five units of the same model!

Up to five units (two units for PAT850-9.4T, PAT1000-8T and PAT1500-5.3T) can be configured in a master-slave parallel connection. This allows you to control the whole system via the master unit front panel with full display of the current sum (max. output current: rated output current of single unit x number of parallel units). Furthermore, the output current of each slave unit can be monitored by pressing the STORE button of each slave unit*. For parallel connection, parallel operation cable PC01-PAT is required for each slave units.

*Not available with 8 kW-type 400 V input models (20 V, 40 V, 60 V, and 160 V types) and 4 kW types.

Series operation up to two units of the same model!

Up to two units can be connected in series for 8 kW (PAT20- 400T, PAT30-266T, PAT40-200T, PAT60-133T, PAT80-100T, and PAT160-50T) and 4 kW types. However, master-slave operation is not supported. The sum of the output voltage between the two units is supplied to the load.

4 kW types operable with single-phase 200 V input.

The current is limited to approximately 75% of the rated value with a power limit of 3 kW.

CV, CC priority starting function*

The PAT-T can be set to start up as either a constant voltage (CV) power supply or constant current (CC) power supply when the output is turned ON. CV priority mode is used during constant voltage, while CC priority mode is used during constant current for smooth startup without overshoot.

Output current rise waveform comparison during constant current operation

*Not available with 8 kW-type 400 V input models (20 V, 40 V, 60 V, and 160 V types) and 4 kW types.

External analog control function

Output voltage can be controlled by an external voltage (Vext) of 0 V to 10 V or an external resistance (Rext) of 0 kΩ to 10 kΩ. FAST mode* allows for direct control of external voltage (without passing through CPU), removing any delay between Vext and changes in output voltage.

Other functions

• RS232C standard digital interface
• USB/GPIB/LAN optional digital interfaces
• Reliable output ON/OFF delay function for sequence output
• Memory function (three sets of voltage/current)
• Voltage/current monitor output
• Status signal output
• Remote sensing function
• Protection functions
  Protections against shutdown, overvoltage, overcurrent, overheating, input phase interruption, fan malfunction, sensing, and bleeder circuit overheating available
• High noise resistance(for reassurance during car electronics testing)
• Easy maintenance with quick fan replacement

Smart Rack System (PAT-TX/TMX)

Maximum output of 40kW, 2000A!

This high-current model consists of multiple PAT-T Series units configured in a special cabinet rack.

• High power: 16kW to 40kW, 4 types
• Built-in power factor correction (PFC) circuit for harmonic current control and energy efficiency!
• Optional built-in circuit breaker (“X” models)
• 3-Phase 200V and 3-Phase 400V input specifications available
• RS232C standard digital interface. USB, GPIB, and LAN (LXI) available as factory options.
• Lineup: 164 models in total (82 models in table below are 3-phase 200V input type)