シーブイエンジニアリング List of Products and Services

"Chibi Maru Chi" is an affordable multimeter that can be used in a wide range of fields, including power maintenance management. The display of voltage and current waveforms can be operated with a smartphone-like interface, allowing for zooming in and out on the X and Y axes. Additionally, it is equipped with a multimeter probe, which can be replaced with alligator clips when recording data. 【Features】 ■ Multi-measurement ■ Display of voltage and current waveforms ■ Harmonic analysis ■ Data logger function ■ Equipped with a multimeter probe ■ Easy-to-read display of voltage and current *For more details, please download the PDF or feel free to contact us.

• oscilloscope
• Voltage Meter
• Ammeter

The "CVE-31B" is a product developed for use in voltage detection and measurement tasks in control system distribution panels, based on the CVE-31 (conventional model), with improvements such as the removal of the rarely used current measurement function. This product is a joint development by Youratec Co., Ltd. and CV Engineering Co., Ltd. Please feel free to contact us when you need assistance. 【Features】 - Removal of the rarely used current measurement function, resulting in a lower price - Change of the nominal value for voltage measurement accuracy from 2.5% F.S. to 1% F.S. - Development of a function that allows the tip of the test probe to be changed to a pin plug or alligator clip via a screw (multi-test probe), which is incorporated into this product. *For more details, please refer to the related links or feel free to contact us.

• Other measurement, recording and measuring instruments

"Chibi Maruchi" is an affordable multimeter that can be used in a wide range of fields, including power maintenance management. The display of voltage and current waveforms can be operated with a smartphone-like interface, allowing for zooming in and out on the X and Y axes. Additionally, it is equipped with a multimeter probe, which allows you to replace the tip of the probe with alligator clips when recording data. 【Features】 ■ Multi-measurement ■ Display of voltage and current waveforms ■ Harmonic analysis ■ Data logger function ■ Equipped with a multimeter probe ■ Easy-to-read display of voltage and current *For more details, please download the PDF or feel free to contact us.

• oscilloscope
• Voltage Meter
• Ammeter

Once the connections for the reference side and the comparison side are made, voltage matching tests and VCT combination tests can be conducted without needing to reconnect. This allows for speedy measurements with fewer errors. This product measures all phases simultaneously, enabling the measurement of true phase-to-phase phase differences and effective values. In the case of voltage matching tests, measurements will not be simultaneous as the connections to the voltmeter are switched internally within the measuring instrument, but the switching is done automatically, so no manual switching is required. 【Features】 ■ Ideal for voltage matching tests and VCT combination tests ■ Three-phase simultaneous testing ■ Current measurement using terminal input or clamp sensor ■ Built-in printer for printing test results

• Voltage Meter
• Ammeter

In control work such as distribution board operations, there is a mix of alternating current (AC) and direct current (DC) in the circuits, and work behind the distribution board takes place in a narrow and dimly lit area, making it easy to induce mistakes due to range errors with testers or incorrect jack insertions. In the worst-case scenario, there are concerns about mistreatment of the main circuit or low-voltage electric shock disasters. In response to this situation, we developed a compact measuring instrument that can automatically distinguish between AC and DC without range switching, and can detect and measure voltage and current elements. This eliminates the aforementioned concerns, enabling error-free control work and contributing to safety and improved work efficiency. 【Features】 ■ Safety: No resistance measurement function that is likely to cause mistreatment. The resistance value for voltage input is 5MΩ, providing high resistance input. ■ Usability: Automatic switching between AC and DC, as well as full auto range. ■ Visibility: The voltage probe is equipped with an LED for polarity identification. In addition to digital display, it allows for voltage display of DC ±125V through an analog meter.

• Voltage Meter
• Ammeter

This product integrates a power supply and current transformer ratio tester, as well as a polarity tester, to facilitate easy connection verification testing after the installation or modification of current transformers in various electrical substations. It can automatically switch between measuring the current transformer ratio and polarity for each phase sequentially. It outputs current (up to 20A) from the primary side, and the current transformer ratio is automatically calculated from the ratio of primary current to secondary current, which can be read directly, while simultaneously displaying the polarity on the screen. 【Features】 ■ Built-in testing power supply ■ History reading function ■ Operation and display via touch panel ■ Printing and data saving functions

• Testing Equipment and Devices

When conducting sequence tests on digital type switchboards, it is necessary to apply a steady voltage, specifically a three-phase alternating current voltage of 110V (line-to-line) as the bus voltage, and a single-phase alternating current voltage of 63.5V or 110V synchronized with the bus voltage as the line voltage. This product is designed to generate this steady power supply. 【Features】 ■ Uses commercial power supply (AC100V) ■ Compact and lightweight ■ Easy to handle (no adjustments needed as it is a dedicated device) ■ Low cost (approximately 1/10 or less of conventional devices)

• Other measurement, recording and measuring instruments

After the construction of the substation has been completed, it is necessary to conduct confirmation tests of the main circuit and VCT circuit to ensure that the work has been carried out properly. This device applies test voltage to the main circuit of the substation and is used for comprehensive confirmation tests of the phase detection of the main circuit and the secondary circuit of the VCT. 【Features】 ■ Test voltage can be selected via a push-button switch ■ Built-in voltage, current, and phase meters for labor-saving testing ■ Supports testing from both the primary and secondary sides of the main transformer ■ The resistance box is integrated into the lid of the main unit, separating during use and integrating during storage.

• Testing Equipment and Devices

The "CVE-33" is a burden measurement device for VT and CT circuits that incorporates a test power supply and voltage/current measuring instruments. The power supply is single-phase AC100V, but it can provide three-phase output for VT circuit burden measurements, allowing measurements to be taken even in environments without a three-phase power supply. Additionally, it features a simple operation where you can select the type of burden measurement and just press the START button. Measurements can be completed in a short time of about 3 to 7 seconds. 【Features】 ■ Built-in test power supply and voltage/current measuring instruments ■ Simple and speedy measurements ■ Compact and lightweight ■ Two types of connection terminals ■ Safety design *For more details, please refer to the PDF materials or feel free to contact us.

• Other measurement, recording and measuring instruments

The current status of VCT circuit load measurement at substations and similar facilities involves reading the indicated values of voltage and current for each phase with voltmeters and ammeters after the equipment is charged post-construction. The load values and rated equivalent values at the time of measurement are calculated using a calculator or similar device. As a result, complicated tasks such as measurement and recording are performed within charged equipment, posing risks of accidents. This measuring instrument allows for safe and easy measurement of VT and CT circuit loads. 【Features】 - Built-in power supply for VT and CT testing enables load measurement before the completion of construction. - Automatically calculates load values and rated equivalent load values, and easily records them with a printer. - Capable of load measurement compatible with three connection methods for both VT and CT.

• Other measurement, recording and measuring instruments

This product is designed to measure the contact resistance of the main contact parts of power circuit breakers, etc. It flows a DC 10A current through the contact parts and calculates the resistance value using the four-terminal method. Circuit breakers may have bushing current transformers installed, but to prevent transient phenomena during the ON and OFF states of the energized current, the increase and decrease of the energized current is done gradually. 【Features】 ■ Gentle measurement for circuit breakers (gradual increase and decrease of energized current) ■ Display and printing function for measurement results ■ User-friendly shape for field use

• Other measurement, recording and measuring instruments

A current of 20A (10A can also be measured) is passed through the resistance measurement point, and the resistance value is measured using the four-terminal method. Since its release in 1993, it has been delivered to many companies, including Tohoku Electric Power Co., Inc. and Youratec Co., Ltd., and has received positive feedback. 【Features】 ■ The current can be varied from 0 to 20A (manual operation) ■ User-friendly shape for field use ■ Low price

• Other measurement, recording and measuring instruments

By measuring the polarity of the current in both the forward and reverse directions and taking the average, the influence of the thermoelectric potential generated between the specimen and the electrodes can be eliminated. This enables high-precision resistance measurements. 【Features】 ■ Elimination of the influence of contact potential difference or thermoelectric potential between dissimilar metals ■ Temperature measurement function ■ Repeat function and data storage function

• Other measurement, recording and measuring instruments

The "CVE-29" is a diode unit that can prevent damage from backflow and reverse electromotive force by connecting between the power supply and storage batteries. It features an alarm terminal that activates when an overcurrent causes the built-in no-fuse breaker to trip. By connecting this to an external buzzer, it can provide an overcurrent alarm. Additionally, it adopts a trunk type with a handle, making it easy to carry. 【Features】 ■ Supports large currents of DC100A ■ Protection by no-fuse breaker ■ Alarm terminal ■ Polarity confirmation terminal ■ Easy-to-carry shape

• Other measurement, recording and measuring instruments