昭和電子工業 List of Products and Services

The "NRTT-2013" is a timing tester that measures the state changes of individual circuits with 6 pulse channels, 2 analog channels, and a total of 8 channels, as well as the timing of state changes between circuits. Operation is done using the included tablet device (Android Nexus 7). The tablet allows for setting measurement conditions and displaying measurement results in graph form. Additionally, the measured data can be saved in a format usable with Excel, and graphs can also be imported as images to a computer. 【Features】 ■ Channels include 6 pulse channels and 2 analog channels ■ Sampling number is fixed at 8000 data points with 4 patterns available ■ Records 1000 data points before the trigger and 7000 data points after *For more details, please download the PDF or contact us.

• Other measurement, recording and measuring instruments

Railway operators with DC sections, a must-see! Our article has been published in "Railway and Electrical Technology (March 2025 issue)"! It features a technical explanation article on accident point identification devices for ground faults and short circuit accidents on electric train lines, which are useful for early accident recovery. *For more details, please download the PDF or contact us. *Source: "[Railway and Electrical Technology March 2025 issue Theme Technology Development of Accident Point Identification Devices for DC Power Supply Circuits]" *Reproduction of this article is prohibited.

• Other information systems

This product is an analyzer that calculates and displays, records the effective voltage, effective current, R impedance, X impedance, second harmonic content, and phase angle of current relative to voltage for each circuit during AT power supply method parallel power connection, bulk power connection, and BT power supply method. Contact output is possible when the calculation result falls within the setting range of 44F. Additionally, measurement data is recorded on an SD card, and data analysis can be performed using a dedicated application. 【Features】 ■ Contact output (500ms) when the calculation result falls within the setting range of 44F ■ Measurements can be recorded on an SD card by making a reservation in advance ■ Analysis of recorded data can be performed using dedicated application software installed on a WINDOWS PC *For more details, please refer to the PDF document or feel free to contact us.

• Other measurement, recording and measuring instruments

The "ADP2NS type" is an AC information adapter that is part of the terminal equipment for the maintenance information collection system. It is arranged in each panel of the electric railway substation's receiving panel, transformer panel, rectifier panel, and high distribution panel to measure AC load data, and transmits the necessary data to the ADP information aggregation device. Furthermore, the connection between this product and the information aggregation device is made via an RS485 interface, with a maximum of 40 units connectable to the information aggregation device. 【Features】 ■ Part of the terminal equipment for the maintenance information collection system ■ Transmits necessary data to the ADP information aggregation device *For more details, please refer to the PDF document or feel free to contact us.

• AC adapter

The "S28-R1 type" is an arc detector for DC high-speed air circuit breakers. It is capable of providing contact output when an arc is detected. By using a combination of special filters and elements, it eliminates false operation from natural light. This product is designed to be used in combination with relays. 【Features】 ■ Detects ultraviolet rays of specific wavelengths emitted during an arc and provides contact output to the relay section. ■ By using multiple semiconductor light-receiving elements and arranging them at different angles, it expands the detection range. *For more details, please refer to the PDF materials or feel free to contact us.

• Other inspection equipment and devices

The "S-25N5 type" is a phase detection relay used in self-owned AC substations, which measures the phase difference between different power sources and the voltage vector difference. When the set conditions are met, the contact output circuit turns ON and outputs the results. It has a serial transmission output function (USB connection) that allows the output of each power supply voltage, voltage difference, and phase difference to a computer as needed. 【Features】 ■ Measures the phase difference and voltage vector difference between different voltage sources in substations, etc. ■ Equipped with a serial transmission output function, allowing data to be output to a computer as needed. *For more details, please refer to the PDF materials or feel free to contact us.

• others

The "S-25P2 model" is a synchronous tester that has the capability to output phase difference in BCD code for monitoring and control terminals. In self-sustaining AC substations and similar facilities, it measures the phase difference between different power sources as well as the voltage vector difference. When the set conditions are met, the contact output circuit turns ON and outputs the result. 【Features】 ■ Measures phase difference and voltage vector difference between different power sources ■ Continuously displays the phase difference value on the main unit ■ Outputs in BCD code to monitoring and control terminals *For more details, please refer to the PDF document or feel free to contact us.

• Other inspection equipment and devices

The "SDT-06A(2A) type" is a fast-response, compact, and lightweight DC current converter. It can convert DC current to a 4-20mA output. It can be used in a temperature range of -10°C to 50°C. The external dimensions are W116mm × H98mm × D70mm, and the weight is approximately 400g. For more details, please contact us. 【Features】 ■ Fast response ■ Compact ■ Lightweight *For more information, please refer to the PDF document or feel free to contact us.

• Converters and Transducers

The "SDT-06A(1A) model" is a direct current converter that transforms direct current into a 4-20mA output. It features fast response, compact size, and lightweight design. It can be used in a temperature range of -10°C to 50°C. The external dimensions are W116mm × H98mm × D70mm, and the weight is approximately 400g. For more details, please contact us. 【Specifications (partial)】 ■ Rated current: 1A ■ Input/Output current: 0-1A / 4-20mA ■ Maximum measured current: Rated current +10% ■ Output load resistance: 600Ω or less ■ Linearity: ±1% at 20mA, etc. *For more details, please refer to the PDF document or feel free to contact us.

• Converters and Transducers

The "SDC-25 model" is a direct current transformer that is extremely lightweight and easy to install, due to its clamp-type CT design and the absence of a large magnetic core. It can detect the rectifier current and the current for power supply in direct current substations, allowing for integration into measurement devices. Additionally, we customize the product according to the maximum input current, so please feel free to consult us even if there is no applicable range. 【Features】 ■ Configuration without a large magnetic core ■ Extremely lightweight ■ Compact ■ Easy-to-handle structure *For more details, please refer to the PDF document or feel free to contact us.

• Converters and Transducers

The "SDC-23 type" is a direct current transformer designed to detect the rectifier current and feeding current of direct current substations and to incorporate them into measuring devices. In addition to being a clamp-type CT, it is constructed without using a large magnetic core, making the main body extremely lightweight and easy to install. Furthermore, we customize the product according to the maximum input current, so please feel free to consult us even if there is no applicable range. 【Features】 ■ Detects the rectifier current and feeding current of direct current substations and incorporates them into measuring devices ■ Does not use a large magnetic core ■ Extremely lightweight ■ Compact ■ Easy-to-handle structure *For more details, please refer to the PDF document or feel free to contact us.

• Converters and Transducers

The "210A-SA" is a load management device specialized for measuring AC loads of voltage and current in high-voltage lines. It creates reports based on the measured data and records them on an SD card. The recorded data can be analyzed using spreadsheet software installed on a PC. Additionally, despite its compact size, it has an internal input converter that allows for direct input of 150V and 7A, reducing the burden of operation. 【Features】 ■ Capable of measuring AC loads of voltage and current in high-voltage lines ■ Can store daily and monthly CSV data on an SD card inserted into the main unit ■ Analysis of the CSV data recorded on the SD card can be performed using spreadsheet software installed on a PC *For more details, please refer to the PDF document or feel free to contact us.

• Electronic Load Unit

The "109-EAMS type" is a maintenance information collection device that measures voltage, current, and power in the AC system of substations, as well as maintenance data. The measurement data can be transmitted via telephone lines to the computers in the power district. The measurement data includes regular reports (daily and monthly), RX data, analog data, as well as accident waveforms and accident current value data. In particular, accident data can be transmitted at the time of occurrence, allowing for early understanding of the accident details in the power district. 【Measurement Accuracy】 ■ Voltage and Current: Error within ±1% of full scale ■ Power: Error within ±2.5% of full scale *For more details, please download the PDF or contact us.

• Other information systems

The "SDF-7" is a power quantity meter that integrates the pulse signals from a voltage-free contact output from the power meter and displays them, while also enabling communication with a monitoring control terminal via a commercial LAN, allowing for the reception of current time settings and the transmission of specified data. Please feel free to contact us if you have any requests. 【Basic Functions】 ■ Settings: Power measurement unit, multiplication factor, clock settings ■ Measurement: Pulse measurement ■ Display: Current time, current measurement value, current power, past data retrieval ■ Communication: Communication with monitoring control terminal (2 systems) *For more details, please download the PDF or contact us.

• Power meter

The "R113-D04 model" is a DC measurement device capable of measuring the load of a single total current circuit. The digital daily reports and analog 1-minute values are stored on an SD card inserted into the main unit for the past 100 days, while monthly reports are accumulated as CSV data for the past 3 months. Additionally, the analysis of the CSV data recorded on the SD card can be performed using spreadsheet software installed on a computer. 【Measurement Specifications (Excerpt)】 ■ Measurement Circuit: Total Current 1ch ■ Measurement Type/Range: Total Current DC F.S Range Setting Value × 0.5% to F.S Range Setting Value ■ Sampling: 1ms ■ Response Time: [Measurement] 100ms, [Display] 1sec, etc. *For more details, please download the PDF or contact us.

• Other measurement, recording and measuring instruments

The "R113-D03 type" is a direct current measuring device that performs load measurement of a total current single circuit and can store digital daily reports and analog 1-minute values as CSV data for the past 100 days, as well as monthly reports for the past 3 months on an SD card inserted into the main unit. The analysis of the CSV data recorded on the SD card can be performed using spreadsheet software installed on a PC. 【Measurement Specifications (Excerpt)】 ■ Measurement Circuit: Total Current 1ch ■ Sampling: 1ms ■ Response Time: [Measurement] 100ms, [Display] 1sec ■ Accuracy: [Measurement] Error ±1.0% (F.S), [Clock] Error ±1 second within 1 day, etc. *For more details, please download the PDF or contact us.

• Other measurement, recording and measuring instruments

The "R113-D02 type" is a DC measurement device that performs load measurements on a DC bus, total current, and five lines of feeding current. It can store digital daily reports and analog one-minute values for the past 100 days, and monthly reports for the past three months in CSV format on an SD card inserted into the main unit. The analysis of the CSV data recorded on the SD card can be performed using spreadsheet software installed on a PC. 【Measurement Specifications (Excerpt)】 ■ Measurement Lines: Bus Voltage 1ch, Total Current 1ch, Feeding Current 5ch ■ Sampling: 1ms ■ Response Time: [Measurement] 100ms, [Display] 1sec ■ Accuracy: [Measurement] Error ±1.0% (F.S), [Clock] Error ±1 second within 1 day, etc. *For more details, please download the PDF or contact us.

• Other measurement, recording and measuring instruments

The "R113-D01 type" is a DC measurement device that performs load measurements on four circuits: DC bus, total current, and feeding current. It can store digital daily reports and analog 1-minute values for the past 100 days, as well as monthly reports for the past 3 months in CSV format on an SD card inserted into the main unit. The analysis of the CSV data recorded on the SD card can be performed using spreadsheet software installed on a PC. 【Measurement Specifications (Excerpt)】 ■ Measurement Circuits: Bus Voltage 1ch, Total Current 1ch, Feeding Current 4ch ■ Sampling: 1ms ■ Response: [Measurement] 100ms, [Display] 1sec ■ Accuracy: [Measurement] Error ±1.0% (F.S), [Clock] Error ±1 second within 1 day, etc. *For more details, please download the PDF or contact us.

• Other measurement, recording and measuring instruments

The "119C-ES model" is a measuring device that can measure the voltage and current of the AC system, the current, voltage, and power of high-voltage distribution transformers, rectifier circuit current, feeding circuit current, DC bus voltage, etc., in substations that adopt ME-type distribution boards, and display and record data in a specified format. The recorded data can be output to reports using a computer with a dedicated application installed via an SD card, and data transmission can be done using a commercial LAN. [Measurement Specifications (Excerpt)] ■ Response Time: Load Measurement 100ms; Fault Measurement 1ms ■ Measurement Accuracy: Error within ±1% of full scale, etc. *For more details, please download the PDF or contact us.

• Other measurement, recording and measuring instruments

The "119C-EA model" is an AC measurement device that is used in substations equipped with ME-type distribution boards in the 50Hz range. It measures the current, voltage, and power of each line of high-voltage distribution transformers (distribution transformers), as well as the voltage and current of each high-voltage line, processes the data, and stores it. It can display and record the specified data on the main unit's LCD screen when needed. Additionally, this data can be saved to a memory card and output to a report using a computer. 【Measurement Specifications (excerpt)】 ■ Current measurement range: Rated current AC5A [Measurement range] 0.02A to 7A ■ Voltage measurement range: Rated voltage AC110V [Measurement range] 30V to 150V; (zero phase) 10V to 190V ■ Response time: 100mS (for voltage, current, and power) ■ Measurement accuracy - Voltage/Current: Error within ±1% of full scale - Power: Equivalent to JISC1216 ordinary class, etc. *For more details, please download the PDF or contact us.

• Other measurement, recording and measuring instruments

The "R113-P01 model" is a recording electric power meter that counts pulse signals from an oscillator-equipped electric power meter, processes the data, and can store daily reports for the past 100 days and monthly reports for the past 3 months in CSV format on an inserted SD card. The analysis of the CSV data recorded on the SD card can be performed using spreadsheet software installed on a computer. [Measurement Specifications (Excerpt)] ■ Measurement Circuit: 1 channel ■ Measurement Content: [Reading Value] 6 digits ■ Input Signal - No-voltage a contact (Power capacity DC24V/10mA) - Pulse interval (ON time: 50ms, OFF time: 200ms or more) ■ Measurement Conditions - Sampling: 10ms - Recording Interval: 30 minutes, etc. *For more details, please download the PDF or contact us.

• Other measurement, recording and measuring instruments

The "NRTT-2013" is a timing tester that measures the timing of state changes in individual circuits, with a total of 8 channels consisting of 6 pulse channels and 2 analog channels, as well as state changes between circuits. Operation is performed using the included tablet device (Android Nexus 7). The tablet allows for the setting of measurement conditions and the graphical display of measurement results. Additionally, the measured data can be saved in a format compatible with Excel, and graphs can also be imported as images to a computer. *For more details, please download the PDF or contact us.*

• Other measurement, recording and measuring instruments

Showa Electric Industry Co., Ltd. is engaged in the manufacturing and sales of electronic devices, as well as the design and construction of electrical work and telecommunications work. We handle a wide range of products for DC substations, including not only load and accident measurement systems for receiving (AC), high distribution (AC), and feeding (DC) lines, but also arc detectors for circuit breaker operation and clamp-type large current DC current transformers that are easy to install, as well as electric energy transmitters. Please feel free to contact us if you have any requests. 【Products】 ■ DC Substation Equipment 【Measurement Devices】 ■ AC Substation Equipment 【Measurement Devices】 ■ Maintenance Measurement Devices and Conversion Devices ■ Other Measurement Devices *For more details, please feel free to contact us.

• Other measurement, recording and measuring instruments