KEISOKU GIKEN Ene-phant series regenerative DC power supply (bidirectional) 50kW | PT. NIHON DENKEI INDONESIA Jakarta
CONTENTS CONTENTS

ITEMLIST

Products Infomation

KEISOKU GIKEN Ene-phant series regenerative DC power supply (bidirectional) 50kW

The Ene-phant series is developing products centering on the regenerative function. All of them support customers with high efficiency and fulfilling functions.

The regenerative DC power supply "NT-AD-50K-B series", which can reuse valuable electric power, applies regeneration technology based on the achievements of Keisoku Giken to achieve efficiency of 90% or more, which is the highest level in Japan. Bidirectional power supply. It can be expanded with standard products up to 250 kW in 50 kW units.

Regenerative DC power supply (bidirectional) 50kW

Maker:

KEISOKU GIKEN

Features

Space-saving contributes to the ground area

For the 50kW single unit, the width has been reduced by 150mm and the depth by 100mm compared to the previous model, and the installation area ratio has been reduced by approximately 0.31m2. Both the area ratio and the volume ratio contribute to space saving of about 30%, and flexible installation is possible.

Regeneration efficiency of 90% or more, the highest level in the industry

Achieves high efficiency of 90% or more (at rated load). Furthermore, if the rated power is 15% or more, a regenerative efficiency of 80% or more is achieved. Highly efficient regeneration is possible over a wide range of load power.

Expandable up to 5 units of 250 kW! Series-parallel combination enables high voltage and large current

If it is the same model, you can connect up to 2 units in series like batteries (excluding 1500V models) and up to 5 units in parallel connection. Depending on the stage of evaluation and testing, a flexible configuration can be realized using a master/slave unit, from capacity expansion by combining multiple units to individual operation of multiple units.

Realizes seamless bi-directional and 0V drive

Seamless ±current bi-directional operation is possible without range switching from 0V.

Employs electrical insulation using a transformer

Electric insulation is provided between the power supply and the system using a transformer. Safe and secure design.

high speed operation

High-speed current response speed of 10msec or less and seamless power running (drive: power supply) and regeneration (absorption: load) switching are realized. Therefore, there is no overshoot or undershoot of the current, so you can use it safely without giving unexpected stress to the test piece.

Compliant with grid connection regulations

Equipped with system monitoring and protection functions that comply with the grid connection protection device certification test, it has the same monitoring and protection functions as general commercial power conditioners, and can circulate energy safely and without waste. can. Various system monitoring functions can be set to arbitrary values.

Oscilloscope-like operability

Adopts oscilloscope button layout and operability. The function pasted on the button image on the LCD screen is switched, enabling intuitive operation.

Regenerative power noise CISPR Class A compliant

Regenerative power noise complies with Class A. It has low noise so that there is no influence such as operation failure on other devices due to regenerative power noise.

Body protection function

As a protection function of the electronic load device, 8 types of protection circuits are implemented to support safe test operation.

control interface

LAN (Ethernet) and PLC interface are common and standard equipment. Remote control including automation from the host PC is possible.

Emergency stop button

Equipped with an emergency stop button, which is essential in the car electronics industry. During operation, the power line gate is blocked (forcibly opened by the conductor). It is guarded to prevent malfunction, and external control (Di input) is also possible.

Specification

type name NT-AD-50KD-B NT-AD-50KH-B NT-AD-50KO-B
Basic function
Output range NT-AD-50KD-B output range NT-AD-50KH-B output range NT-AD-50KO-B output range
Rating Rated power 50kW
Rated voltage 350V 750V 1500V
Rated current ±300A ±200A ±100A
Minimum operating voltage 0V
ripple current Within 4Ap-p (switching frequency component)
Regenerative efficiency Up to 90% or more (at rated input/output)
Constant voltage (CV) mode Voltage setting range 0-350V 0-750V 0-1500V
Setting resolution 0.1V
Setting accuracy ±0.3% of F.S.
response time Within 50msec (10% to 90%)
transient recovery time Within 20msec
Power running ⇔ regenerative switching function Automatic switching
Constant current (CC) mode Current setting range 0 to ±300A 0 to ±200A 0 to ±100A
Setting resolution 0.3A 0.25A 0.125A
Setting accuracy ±0.3% of F.S.
response time Within 10msec (10% to 90%)
Power running ⇔ regenerative switching function Manual switching
Constant power (CP) mode Power setting range 0 to ±50kW
Setting resolution 20W
Setting accuracy ±0.5% of F.S.
response time Within 10msec (10% to 90%)
Power running ⇔ regenerative switching function Manual switching
soft start 0, 1, 2, 5, 10sec
Measuring part
Voltage measurement Voltage measurement range 0.0 to 350.0V 0.0 to 750.0V 0.0 to 1500.0V
Measurement resolution 0.1V 0.1V 0.2V
Measurement accuracy ±0.3% of measure. ±1V ±0.3% of measure. ±1V ±0.3% of measure. ±2V
Current measurement Current measurement range 0.0 to ±300.0A 0.0 to ±200.0A 0.0 to ±100.0A
Measurement resolution 0.15A 0.125A 0.0625A
Measurement accuracy  ±0.3% of measure ±0.3A ±0.3% of measure.±0.25A ±0.3% of measure ±0.125A
Power measurement Power measurement range 0 to ±50kW
Measurement resolution 20W
Measurement accuracy  ±0.5% of measure ±62.5W
Limit function
Voltage limit Voltage setting range 0-360V 0-760V 0-1520V
resolution 1V 1V 2V
Operation at limit Triggers an alarm at the set limit value. Stop output
current limit Current setting range 0 to ±300A 0 to ±200A 0 to ±100A
resolution 0.3A 0.25A 0.125A
Operation at limit Clip current at set limit
power limit Power setting range 0 to ±50kW
resolution 20W
Operation at limit Clip power at set limit
protective function
emergency stop Emergency stop of the device is performed by pressing the emergency stop button on the rack.
Overvoltage protection 390V 780V 1560V
Overcurrent protection 330A 220A 110A
over power protection 51.5kW
Overheat protection 90℃ (switching element temperature)
low voltage protection -2V
Internal overvoltage protection 480V 960V 1920V
Reverse connection alarm -2V
Grid protection function
Overcurrent protection 82 Arms
Overvoltage protection 435 to 465Vrms / Resolution 10Vrms / Detection time 0.1 to 2.5sec
undervoltage protection 325 to 355Vrms / Resolution 10Vrms / Detection time 0.1 to 2.5sec
over frequency protection 50.0 to 65.9Hz / Resolution 0.1Hz / Detection time 0.0 to 9.9sec
Under frequency protection 45.0 to 60.9Hz / Resolution 0.1Hz / Detection time 0.0 to 9.9sec
Islanding detection passive Voltage phase jump detection / Detection level 2 to 10° / Enable/disable selectable 
Islanding detection active Reactive power fluctuation method / enable/disable selectable 
Other features
remote sensing function Compensation for voltage drop of electric wire (up to 10V one way)
EXT IN jack (rear panel) Rear terminal block (M6)
Parallel operation Maximum number of parallel units 5 pieces
Maximum rated voltage/current/power DC 350V ±1500A 250kW DC 750V ±1000A 250kW DC 1500V ±500A 250kW
Series operation Maximum series number 2 units (parallel is not possible when connected in series, factory option) Series connection not possible
Maximum rated voltage/current/power DC700V±300A100kW DC 1500V ±200A100kW
External control signal output/input
Digital I/O load on/off Photo coupler input (DC12-24V/8mA)
Protection/alarm status Photocoupler output open collector (DC24V/10mA, recommended 1mA)
Operation mode setting Photo coupler input (DC12-24V/8mA)
emergency stop Photo coupler input (DC12-24V/8mA)
analog input input voltage 0-10V
Setting items CC, CC limit, CV, CV limit, CP, CP limit
Analog output
voltage monitor
monitor output 0-10V / 0-500V 0-10V / 0-1000V 0-10V / 0-2000V
output impedance 50Ω
terminal BNC / isolated output
Analog output
current monitor
monitor output -10~10V / -300~300A -10 to 10V / -200 to 200A -10 to 10V / -100 to 100A
output impedance 50Ω
terminal BNC / isolated output
interface
LANs Communication specifications IEEE 802.3
connector RJ45
data rate 10Base-T 100Base-TX
RS-232C connector D-sub 9pin
General specifications
Power supply Input rating Grid side: 3-phase 3-wire 400±40V, 50 Hz ±2 Hz or 60 Hz ±2 Hz
overvoltage category II
Power factor at maximum load 0.9 or more
input power No load 800 VA or less
Input current At maximum load (at AC400V) 73 Arms
At maximum load (at AC360V) 89 Arms
Recommended breaker AC 100A
Terminal block screw diameter Power output terminal block M12 M10 M6
System input terminal block M6
Remote sense terminal block M6
mass only a main part About 950kg or less
External dimensions Not including protrusions W600×H1977.5×D900mm
Environmental condition Operating environment indoor use
operating temperature 0°C to +40°C
operating humidity 20 %rh to 85 %rh (non-condensing)
storage temperature -20°C to +60°C
storage humidity 20 %rh to 85 %rh (non-condensing)
Altitude 2000 m or less
cooling method Forced air cooling by fan
Withstand voltage Between input and output No abnormality after applying 1800 V AC for 1 minute
Between input and FG No abnormality after applying 1800 V AC for 1 minute
insulation resistance Between input and FG 500 VDC, 30 MΩ or more
Compliance standard EMC standards EN61000-3-2
CE Low Voltage Directive 2014/35/EU
Safety standard IEC 61010-1
option
AX-OP01 Master-slave cable 1m Master-slave cable 1m
AX-OP02 Master-slave cable 3m Master-slave cable 3m
AX-OP13 System side three-phase three-wire 200V option Grid input voltage 3-phase 200V±20V 50Hz/60Hz change (factory option)

Get Adobe' Reader'

To view the pdf files, the Adobe Reader from Adobe Systems is required.

Researched by Shared Research Inc.
about Nihon Denkei Co., Ltd.