光星計測器（LIGHTSTAR） List of Products and Services

This device measures and displays various measurement elements of the power system, allowing remote monitoring of the measured data via RS-485 communication, and it can store data. By inputting the PT ratio and CT ratio, it measures and displays the voltage, current, active power, reactive power, apparent power, power factor, frequency, active energy, and reactive energy for a total of 12 channels, separated by phase. It also displays the average, maximum, and minimum voltage, current, power, and power factor over time. Features: - Supports three-phase input with a total of 12 channels and 36 current inputs. - Channel changes and displays can be made via button input, making it convenient to check measurement information by channel. - Remote power monitoring is possible using RS-485 communication (MODBUS-RTU). - Allows confirmation and storage of measured data by connecting via USB. For inquiries, please contact "lightstar_1979@yahoo.co.jp". Power Multimeter

• Voltage Meter
• Ammeter
• Board materials

KBU-□□ is our company's transformer (PT). The primary voltage can be applied from 220 to 440V and can be converted to 110V or 220V. It has a built-in fuse for product protection. The size and rated load have been reduced compared to the existing KBO, making it user-friendly. For inquiries, please contact "lightstar_1979@yahoo.co.jp".

• transformer
• Transformers
• Board materials

As a device installed to prevent leakage accidents in electrical lines under 600V, it inputs the current measured by a zero-sequence current transformer (ZCT) and outputs alarm signals and alarm sounds when the measured value exceeds the preset value for each circuit, allowing for remote monitoring through communication and control signals. For inquiries, please contact "lightstar_1979@yahoo.co.jp".

• relay
• Other electronic measuring instruments
• Board materials

It is a converter that converts DC power into communication signals. Communication is equipped with RS-485, so please try it out first. For inquiries, please contact "lightstar_1979@yahoo.co.jp".

• Converters and Transducers
• Transformers
• Board materials

This is an insulated converter that converts resistance temperature (PT temperature) into direct current voltage/current. It can also accommodate various auxiliary power supplies. Please give it a try. RTD Socket Transducer For inquiries, please contact "lightstar_1979@yahoo.co.jp".

• Converters and Transducers
• Transformers
• Board materials

This is an insulation transformer that converts potential difference (resistance) into direct current voltage/current. It can also accommodate various auxiliary power supplies. Please give it a try. For inquiries, please contact "lightstar_1979@yahoo.co.jp".

• Converters and Transducers
• Board materials
• Transformers

This is a socket converter that converts frequency to direct current (DC) current/voltage. Please give it a try first. For inquiries, please contact "lightstar_1979@yahoo.co.jp".

• Converters and Transducers
• Transformers
• Board materials

It is an isolation converter that converts DC voltage/current to DC current/voltage. It can accommodate various auxiliary power supplies and can be selected between 1 output and 2 outputs. For inquiries, please contact "lightstar_1979@yahoo.co.jp".

• Converters and Transducers
• Transformers
• Board materials

This is a socket converter that converts AC voltage to DC current and DC voltage. Please give it a try first. For inquiries, please contact "lightstar_1979@yahoo.co.jp".

• Converters and Transducers
• Transformers
• Board materials

This is a socket converter that converts alternating current to direct current and direct voltage. Please give it a try first. For inquiries, please contact "lightstar_1979@yahoo.co.jp".

• Converters and Transducers
• Transformers
• Other FA equipment

This is a converter that transforms resistance temperature into direct current (DC) current and direct current (DC) voltage. The temperature is based on the resistance temperature of PT. Please try it first. RTD Transducer For inquiries, please contact "lightstar_1979@yahoo.co.jp".

• Converters and Transducers
• Transformers
• Board materials

It is a converter that converts potential difference into direct current/current/voltage. There is only one output, but there are two types of auxiliary power supplies. For inquiries, please contact "lightstar_1979@yahoo.co.jp".

• Converters and Transducers
• Transformers
• Board materials

It is a converter that converts pulse and analog signals into direct current/voltage. There are two outputs and two types of auxiliary power supplies. Pulse・Analogue Transducer For inquiries, please contact "lightstar_1979@yahoo.co.jp".

• Converters and Transducers
• Transformers
• Board materials

This is a converter that converts reactive power and electric energy into direct current/current/voltage. The circuits available are 1P2W, 1P3W, 3P3W, and 3P4W. var & var hour Transducer For inquiries, please contact "lightstar_1979@yahoo.co.jp".

• Converters and Transducers
• Transformers
• Board materials

This is a converter that converts reactive power into direct current/current/voltage. The circuits available are 1P2W, 1P3W, 3P3W, and 3P4W. For inquiries, please contact "lightstar_1979@yahoo.co.jp".

• Converters and Transducers
• Transformers
• Board materials

This is a converter that converts balance power factor and unbalance power factor to direct current voltage/current. The circuits available are 1P2W, 1P3W, 3P3W, and 3P4W. Power Factor Transducer For inquiries, please contact "lightstar_1979@yahoo.co.jp".

• Converters and Transducers
• Transformers
• Board materials

It is a converter that converts alternating current power and energy into direct current current/voltage. The circuits available are 1P2W, 1P3W, 3P3W, and 3P4W. Watt・Watthour Transducer For inquiries, please contact "lightstar_1979@yahoo.co.jp".

• Converters and Transducers
• Transformers
• Board materials

It is a converter that converts alternating current power to direct current current/voltage. The circuit options are 1P2W, 1P3W, 3P3W, and 3P4W, and you can choose between 1 output and 2 outputs. Watt Transducer For inquiries, please contact "lightstar_1979@yahoo.co.jp".

• Converters and Transducers
• Transformers
• Board materials

This is a converter that converts frequency to direct current/current/voltage. It can accommodate various auxiliary power supplies and can be selected between single output and dual output. For inquiries, please contact "lightstar_1979@yahoo.co.jp".

• Converters and Transducers
• Transformers
• Board materials

It is an isolation converter that converts DC voltage/current to DC current/voltage. It can accommodate various auxiliary power supplies and can be selected between 1 output and 2 outputs. DC Isolated Transducer For inquiries, please contact "lightstar_1979@yahoo.co.jp".

• Converters and Transducers
• Transformers
• Board materials

It is a converter that converts AC voltage to DC current/voltage. It can accommodate various auxiliary power supplies and can be configured within average/rms values. There are three sizes: M, L, and LL. AC Voltage Transducer For inquiries, please contact "lightstar_1979@yahoo.co.jp".

• Converters and Transducers
• Transformers
• Board materials

It is a converter that converts AC current to DC current/voltage. It can accommodate various auxiliary power supplies and can be configured in terms of average value/rms value. There are three sizes: M, L, and LL. AC Current Transducer For inquiries, please contact "lightstar_1979@yahoo.co.jp".

• Transformers
• Converters and Transducers
• Board materials

It is a device for lighting control and monitoring management, which has been made intelligent and compact. The controller manages control and status monitoring, while the output device controls the MC. Features: - A single lighting controller can handle up to 16 relays x 2 channels. - Remote control using a PC via RS-485 communication. - Prevents unauthorized lighting control operations by managers. - Group control is possible. For inquiries, please contact "lightstar_1979@yahoo.co.jp".

• LED lighting
• controller
• Board materials

To prevent accidents caused by the increase in load rates, it is necessary to maintain an appropriate reserve ratio and control the temporary maximum demand power. To encourage users to voluntarily manage their maximum demand power, Korea Electric Power Corporation has decided to base the basic charge on maximum demand power during electricity rate assessments. Continuous management of maximum usage power is essential to lower the basic charge. For managing maximum usage power, a maximum demand power controller should be used to set target power levels, continuously monitor usage power (peak power) to ensure it does not exceed the set target, and compare the pre-set target value with the current power usage. If the current power exceeds the target power, loads that can be temporarily turned off, such as air conditioners, refrigerators, pumps, and HVAC systems, should be automatically and cyclically disconnected. When the usage power is below the target power or the demand time limit ends, the load power should be automatically restored to control the maximum demand power. Features: - Economical - Panel-mounted design allows for attachment to distribution boards - Easy monitoring and setting with 16 buttons and an LCD display Demand Controller IV For inquiries, please contact "lightstar_1979@yahoo.co.jp".

• controller
• Board materials
• Power meter

When the current transformer is open on the secondary side, the internal magnetic flux can reach saturation, which may lead to insulation breakdown and noise generation. This device detects the opening of the current transformer’s secondary side and protects the transformer. Features: - Connects to the secondary side of the current transformer to monitor the voltage of each phase, activating the secondary side short-circuit function when the overvoltage exceeds the set value. - Two contacts for alarms when the current transformer’s secondary side is open. - Allows for optional testing of recovery and short-circuit for each phase through recovery and short-circuit buttons. Functions: - Determines the presence of an open circuit using an LED. - Sets voltage sensitivity with a digital value (4 levels). - Sets operating delay time with a digital value (1 to 10 seconds). - Allows manual short-circuit/normal recovery operation for each phase separately. - Enables setting of relay usage status (activated/not activated) during alarm operation. Current Transformer Open Detector For inquiries, please contact "lightstar_1979@yahoo.co.jp".

• transformer
• Transformers
• Board materials

This device is designed to efficiently manage motors by linking the heater's operation to the motor's operational status, and it also features overcurrent protection (OCR). Features: - Precise current measurement and overcurrent relay function - Cumulative operating time function based on operating current - Clear control display and the ability to check operational status from a distance - The heater turns OFF when the motor is RUN, and the heater turns ON when the motor is STOPPED - The motor and heater cannot be ON simultaneously - Accepts external trip (alarm) signal input, enabling alarm operation (motor stop, alarm message display) Motor Controller For inquiries, please contact "lightstar_1979@yahoo.co.jp".

• Ammeter
• controller
• Board materials

This device protects the motor by measuring the current of the electric motor, detecting idling, overcurrent, and three-phase voltage imbalance, and displays the status with the set current value: stopped (off), normal operation (yellow), overload operation (red), and low load operation (blue). Functions: - Input: AC current (CT exterior) - 16 channels (50A/20mA), input frequency - fixed at 60Hz - Output: Digital Output - 16 channels, Open Collector - 6~30V, below 100mA Display: 16 channels with 3-color LEDs, channel 2 digits, current value 3 digits - Setting buttons: three (SET, ▼, ▲) Dedicated current transformer: KBJ-25YE (our product) 16 Channel Current Limit Setting Device For inquiries, please contact "lightstar_1979@yahoo.co.jp".

• Ammeter
• Board materials
• Other electronic measuring instruments

This is a device that assists in ensuring continuous power supply by automatically switching to the emergency power source during a power outage or voltage anomaly when both regular and emergency power sources are secured in the circuit. Features: - Measurement, timer, UVR, OVR functions - The front door attachment allows easy understanding of power supply status without opening the panel - Three lamps are attached to the controller, eliminating the need to attach additional lamps to the panel - Four relay contacts allow the user to activate lamps, buzzers, etc., depending on the status of the regular and emergency power sources, making it adaptable for various applications. Functions: - Set values: rated values, rated voltage, automatic recovery usability, overvoltage, undervoltage, overvoltage detection time, undervoltage detection time, imbalance rate, imbalance detection time, switching operation delay time Notes: - An alarm will occur if neither the regular nor emergency power sources are supplied - Do not install a PT for the source power Auto Transfer Switch Controller For inquiries, please contact "lightstar_1979@yahoo.co.jp".

• Switching Power Supply
• Other power sources
• Board materials

It is connected to a constant power supply and used as an auxiliary power source for manual circuit breaker operation during power outages at the receiving equipment. It operates as a rectifier during power supply and turns the circuit breaker ON. The amount of charged electric charge can be confirmed using a voltmeter. Function: - Output: Refer to discharge graph - Capacitor capacity: 6400μF/160V - Rectification capacity: DC 10A/110V - Applicable standards: IEC60694/KSC4611 Condenser Trip Device With Volt meter For inquiries, please contact "lightstar_1979@yahoo.co.jp".

• Capacitor
• Voltage Meter
• Board materials

It is connected to a constant power supply and used as an auxiliary power source for manual circuit breaker tripping support during power outages in the receiving equipment. During power supply, the circuit breaker is used with the auxiliary power source and measurement instrument power. Function: - Output: Refer to discharge graph - Capacitor capacity: 1000μF/160V (KHY-11) 2700μF/160V (KHY-12) - Rectifier capacity: DC 10A/110V - Applicable standards: IEC60694/KSC4611 Condenser Trip Device For inquiries, please contact "lightstar_1979@yahoo.co.jp".

• Switching Power Supply
• Other electronic measuring instruments
• Capacitor

During battery discharge, this device is used together with a charging device as equipment for protecting electrical facilities by lowering the high voltage to an appropriate level. Features: By adopting a switching circuit method for voltage drop, the usage time of the battery can be maintained for a longer duration compared to the existing relay and diode conversion methods. DC Dropper For inquiries, please contact "lightstar_1979@yahoo.co.jp".

• Secondary Cells/Batteries
• Transformers
• Power storage device

This is a product supplied together with the rectifier (KHA) for setting, controlling, and displaying its status upon purchase. Features: - Charge and discharge current, voltage represented in a 10-hour graph - RS-485 communication support for remote monitoring - Automatic correction of charging voltage based on temperature Rectifier Controller For inquiries, please contact "lightstar_1979@yahoo.co.jp".

• controller
• Other electronic measuring instruments
• Converters and Transducers

This is a device that converts AC three-phase power into DC for charging. (It can be used with KHB and reactor sets.) Features: - Equipped with DC voltage and DC current terminals for separate measurement - Built-in NVR (No Voltage Relay) - Rack or shelf mounted Rectifier For inquiries, please contact "lightstar_1979@yahoo.co.jp".

• Converters and Transducers
• Other electronic parts
• transformer

This device is designed to optimize the charging of 9 or 10 lead-acid batteries at 12V installed in a power distribution panel. It consists of an outer box, rectifier, controller, reactor, transformer, numerous circuit breakers, electronic switches, input and output terminals, and other components. It receives input from a regular AC power source and outputs the necessary DC to charge the batteries. The output DC electricity is distributed using multiple circuit breakers according to the customer's needs. Battery Charger For inquiries, please contact "lightstar_1979@yahoo.co.jp".

• Charger
• Board materials
• Secondary Cells/Batteries

The high-voltage MOF is used to measure the ratio error between primary and secondary currents while energized, and it has a function for determining the phase relationship between the primary and secondary currents, which allows for a reduction in inspection time. Features: - Primary current detection unit: Wirelessly transmits current values from the primary line (high voltage). The error range is minimized in three stages based on the current magnitude: 4A/40A/200A. - Secondary current detection unit: As a device that transmits current to the main unit via wired connection, it is always set to a measurement range of 4A, and there are three units that can simultaneously connect R phase (yellow), S phase (brown), and T phase (black). - Main unit: Utilizes the primary/secondary current detection units to collect data, synchronize time, and perform calculations. Based on the results, it alerts the user to the presence or absence of abnormalities in the MOF, allowing for the display, storage, and output of various data for user judgment. Inspection data is presented in detailed values such as measured values, ratio error values, C.T. ratios, etc., and can be stored for up to 10 units. MOF Current Ratio Error Tester For inquiries, please contact "lightstar_1979@yahoo.co.jp".

• Testing Equipment and Devices
• Voltage Meter
• Ammeter

With a single-phase 220V input, it is possible to set the phase of three-phase voltage and current for the calibration and correction of instruments and power converters, as well as for the operation testing of relays, and it can also be applied to field training equipment based on AC circuit theory. Features: - Generates three-phase power (A, V, W, Hz, PF) using a single-phase auxiliary power supply - Automatic output standby in case of operational errors such as miswiring - PC remote control function - Individual phase adjustment for three-phase - Real-time output value variation using a keypad 3Phase Power Calibrator For inquiries, please contact "lightstar_1979@yahoo.co.jp".

• Voltage Meter
• Power meter
• Testing Equipment and Devices

It is a standard correction device with high output (60VA) that precisely generates AC voltage from 3V to 720V or AC current from 5mA to 60A, suitable for instrument production lines and used for calibration tests, allowing general control and schedule control via PC using MMI. Functions: - Precision: AC voltage and current (50/60Hz) accuracy ±0.1% - Wide range generation: Outputs AC voltage from 3V to 720V and AC current from 50mA to 60A, enabling calibration of AC instruments - Frequency: Common frequencies of 50, 60Hz, and adjustable from 44 to 70Hz with a resolution of 0.01Hz - Output division function: Easily achieve arbitrary divided outputs up to 20 parts by simply turning a digital output division dial for the instrument's maximum scale value - Deviation direct reading: When testing the maximum scale and each scale of the instrument, it displays the deviation of the test point as a percentage of the maximum scale value - Sweep: Continuously increase or decrease the set output value from 0 to 120% at a constant speed - Third harmonic output: Control the third harmonic content from 0 to 30% with a single switch dial AC Calibrator For inquiries, please contact "lightstar_1979@yahoo.co.jp".

• Voltage Meter
• Ammeter
• Testing Equipment and Devices

This is a product that can simultaneously display three measurement values: voltage, current, and power factor, as a measuring instrument for inspecting the electrical characteristics of single-phase electrical products. It is also equipped with a limit setting switch that alerts externally via contacts or alarm signals when the set values are not reached or exceeded. Features: - Built-in fuse (excluding KZT-1) to prevent internal losses due to excessive current - Arbitrary setting of judgment time to exclude defects based on judgment timing - Capable of applying various loads due to the effective value measurement method - Selection between external input and internal current detection method for judgment - Notification of results after judgment via contacts or alarm signals - Simultaneous digital display of the basic electrical properties: V, A, W, PF - The limit setting section indicates the pass/fail judgment of the product being tested through alarm sounds and contact signals, making it easy for anyone to confirm. It is a testing instrument that allows recorded data to be saved by connecting to a computer. Portable Power Tester For inquiries, please contact "lightstar_1979@yahoo.co.jp".

• Testing Equipment and Devices
• Voltage Meter
• Ammeter

This is a device equipped with measurement capabilities for the ratio error and phase angle of instrument current transformers or voltage transformers, as well as communication functions. Features: - Standard CT/PT ratio error (%) and phase angle (min) error correction value can be set - Inspection data can be transmitted to a PC via communication program Transformer Error Meter For inquiries, please contact "lightstar_1979@yahoo.co.jp".

• Voltage Meter
• Ammeter
• Testing Equipment and Devices

This is a device that integrates a standard current transformer (CT), test load, error meter, and other components for testing the ratio error and phase angle of instrument transformers or voltage transformers, equipped with a testing program for data storage and automatic testing (linked with a PC). Features: - Transmission of test data to PC via error meter communication program - Built-in standard CT (5A, 1A) and load box (PF 0.8, 5A, 1A) - Price-performance ratio: Easy wiring during installation due to integrated design, reducing testing time - Safety device installation: Prevents component burnout with current relay for step and overload protection CT Tester For inquiries, please contact "lightstar_1979@yahoo.co.jp".

• Testing Equipment and Devices
• Analytical Equipment and Devices
• Ammeter

This product measures single-phase or three-phase circuits and displays waveform/phase/harmonics as graphical data, along with numerical data for voltage/current/power factor/frequency/reactive and active power/energy on a tablet PC connected via Bluetooth. Features: - Convenient measurement of three-phase voltage and current, power, and power factor (however, current measurement is done sequentially for each phase using one clamp) - Transmits data to an Android smart analyzer for storage/display, allowing for high-resolution waveform, phase, and harmonic analysis - Up to 5 hours of use at maximum charge, utilizing a lithium battery - Portable type, convenient for use/carrying/mobility, and offers a high price-performance ratio - Recording function and report format output program function Smart Power Analyzer For inquiries, please contact "lightstar_1979@yahoo.co.jp".

• Analytical Equipment and Devices
• Voltage Meter
• Ammeter

This device is designed to be installed on power lines below 600V, allowing the primary side of the current transformer to carry the total circuit current, with the vector sum of the currents output on the secondary side. The output current value is measured at the input of the leakage current alarm receiver. Features: - Designed with dimensions categorized by the type of applicable circuit breakers, optimizing space utilization. - Constructed to ensure that the plastic surface does not contact the busbar after assembly, minimizing thermal deformation during busbar overheating. This product is a ZCT for SGR. For inquiries, please contact "lightstar_1979@yahoo.co.jp".

• transformer
• Transformers
• Other electronic measuring instruments

This device is installed on a wire route with a voltage of less than 600V, allowing the entire circuit current to flow through the primary side of the current transformer, with the vector sum of the currents output on the secondary side. The output current value is measured at the input of the leakage alarm receiver. Features: - The shape of the lower section of the penetration is designed to be flat to minimize the curvature of the penetrating wire. - The height of the penetration section is designed to be 45mm, considering the duct height of 40mm. This product is a ZCT for SGR. For inquiries, please contact "lightstar_1979@yahoo.co.jp".

• transformer
• Transformers
• Other electronic measuring instruments

It is designed to be installed on power lines under 600V, allowing the primary side of the current transformer to carry the total circuit current, with the vector sum of the currents output on the secondary side. The output current value is measured at the input of the leakage alarm receiver. Features: - Designed with dimensions categorized by the type of applicable circuit breakers, optimizing space utilization. - The structure is designed so that the plastic surface does not touch the busbar after assembly, minimizing thermal deformation during busbar overheating. For inquiries, please contact "lightstar_1979@yahoo.co.jp".

• transformer
• Transformers
• Other electronic measuring instruments

It is installed on a wire route with a voltage of less than 600V, allowing the overall circuit current to flow through the primary side of the current transformer, so that the vector sum of the currents is output on the secondary side. The output current value is measured at the input of the leakage alarm receiver. Features - The shape of the lower section of the penetration is designed to be flat to minimize the curvature of the passing wire. - The height of the penetration section is designed to be 45mm, considering the duct height of 40mm. For inquiries, please contact "lightstar_1979@yahoo.co.jp".

• transformer
• Transformers
• Other electronic measuring instruments