電光工業 List of Products and Services

○Features ■The special Condor V-Starter is a NETIS registered product. ■Low starting current: It suppresses the starting current of the motor, allowing for smaller generators. This is advantageous in terms of installation costs, maintenance costs, space, exhaust gas, and noise. ■Sufficient starting torque: While excessive current suppression can reduce torque, the V-Starter increases torque during operation, providing peace of mind. ■Smooth starting: There is no shock during the transition from starting to operation. ■Long lifespan: There are no electronic components, with a proven track record of over 20 years.

Denkou Kogyo manufactures and sells starters for induction motors. The starter is a device that can limit the starting current required during the startup of an induction motor (which is 6 to 10 times the rated operating current) to about 3 to 4 times, thereby compactly reducing the required capacity of the power supply equipment. Among them, the special Condorfa starter "V-Star" boosts the applied voltage during startup in three stages using a single-winding transformer, ensuring torque while suppressing the starting current. It contributes to the reduction of generator capacity and the introduction of manufacturing equipment without the need for additional generators. It is a product registered with NETIS, so you can use it with confidence. (Old number: KT-140120-VE) Our company offers consultations and solutions for the miniaturization of generators planned for use, including detailed designs that take into account the installation conditions of the motors at the delivery site (such as power distribution equipment capacity and indoor/outdoor location conditions). *For more details on "V-Star," please check the <Download Catalog>. *From July 29, we will be exhibiting at "Sewage Works Exhibition '25 Osaka." We also plan to introduce the new type "α-Beat," which utilizes thyristors and allows for soft start and soft stop.

The soft starter "α-Beat plus" is a new type of soft starter that debuted in September 2023. While maintaining its purpose, role, and basic functions, it improves usability, and for small capacities of 7.5kW or less at 200V and 15kW or less at 400V, it includes an external bypass contactor for operation! It solves mechanical troubles that occur during starting and stopping with the soft starter! 【Features】 ■ Pumps - Gentle starting and stopping, resulting in no shock and quiet operation ■ Crushers - Extended lifespan due to soft start ■ Cooling Towers - No damage due to soft start *For more details, please refer to the PDF materials or feel free to contact us.

We will introduce the benefits of implementing a starter by comparing it with intermittent operation of pumps. When operating with direct-on-line starting and repeatedly turning ON and OFF, the pump and piping can break, so continuous operation is reluctantly adopted. By using "α-Beat," there is no shock at startup, which prevents equipment damage and allows for frequent ON-OFF operations, enabling you to stop without hesitation when not in use. 【α-Beat Features】 ■ No shock at startup, preventing equipment damage ■ Allows for frequent ON-OFF operations ■ Can be stopped without hesitation when not in use *For more details, please refer to the PDF document or feel free to contact us.

To avoid direct connection troubles, the star-delta method is generally used, but there are issues here as well. Has the breaker ever tripped? The breaker can trip during "the switch from star to delta" and "when the starting torque is insufficient." You can find detailed information about each pattern in the related links. 【Why does the breaker trip?】 ■Reason 1: When switching from star to delta ■Reason 2: When the starting torque is insufficient *For more details, please refer to the PDF materials or feel free to contact us.

We will introduce the types and characteristics of starting methods. "Full voltage starting" is characterized by a large power capacity, simplicity, and low cost. On the other hand, "reduced voltage starting" includes methods such as star-delta starting, reactor starting, condenser starting, special condenser starting, and soft starters. When a motor starts, a large current flows, generating significant starting torque, which can cause various electrical and mechanical issues. To avoid this, Denko Industry offers various starting methods. 【Full Voltage Starting Characteristics】 ■ Direct-on-line starting - Simple - Inexpensive - Large power capacity - Significant mechanical shock *For more details, please refer to the PDF document or feel free to contact us.

The starter "V-Star" that we handle can reduce CO2 emissions. Since the generator can be made smaller, it is inexpensive, and the installation costs are low, requiring less space. Additionally, it has the advantages of producing less exhaust gas and noise, contributing to solving environmental issues. Please feel free to contact us when you need assistance. 【V-Star Features】 ■ Small generator ■ Low installation costs and space-saving ■ Overall inexpensive system ■ Less exhaust gas and noise *For more details, please refer to the PDF document or feel free to contact us.

Are you experiencing any startup-related issues such as "severe voltage drop," "large inrush current," "belt breaking during startup," or "unable to start due to heavy load"? Our company offers various solutions, including the soft starter "α-Beat," which can be configured to match the characteristics of your machinery, and the special Condor starter "V-Star," which significantly reduces generator capacity, addressing a range of concerns. In the related links, we provide a gentle explanation of the role of starters with images, so please take a look. 【Resolving startup-related issues with starters】 ■ Electrical troubles - Severe voltage drop, large inrush current Breakers mist trip, generator is too large ■ Mechanical troubles - Belt breaking during startup, unable to start due to heavy load Sudden movement causing load collapse, breaking down with repeated startups *For more details, please refer to the PDF materials or feel free to contact us.

Denko Kogyo has adopted a unique magnetic flux cancellation method to avoid switching surges that cause various troubles, thus solving this issue. There are innovations on how to transition smoothly to operation without generating surges. All of our starters, including the V-Star, VT-Star, and C-Star, utilize magnetic flux cancellation to create a non-inductive circuit, eliminating reactance and transitioning to full voltage operation. This not only prevents moisture ingress and deterioration of insulation but also allows the starter coil to absorb surges, protecting the motor. Additionally, there are various benefits such as the miniaturization and space-saving of the 42MC for operation. *For more details, please refer to the PDF materials or feel free to contact us.*

As you may have noticed, natural disasters such as heavy rain, floods, earthquakes, and eruptions are becoming increasingly severe year by year, causing social infrastructure to cease functioning and resulting in a rising trend of damages. In preparation for this, it is becoming increasingly recognized that emergency power supply systems and generators, which allow activities to resume without waiting for the restoration of extensive power supply networks, are important issues for ensuring the foundation of daily life. There may also be considerations for regular use without relying on external sources. However, if the load equipment to be secured is motor-driven, the generator size increases due to the starting current, which, while necessary, cannot be ignored from an economic perspective when it comes to implementation. Therefore, we recommend using the motor starter "Special Condor V-Star," which reduces generator capacity. By using this product, your generator can be downsized, leading to reduced initial costs. Being smaller means that construction costs, installation space, maintenance costs, and CO2 emissions can also be reduced, achieving a reduction in burden and advancing the resilience of society. Our company is striving to assist in any way possible, and we look forward to hearing from you. *For more details, please refer to the PDF materials or feel free to contact us.*

Here is an example of calculating generator capacity. In a certain high-rise condominium, it became necessary to calculate the capacity of an emergency generator. When calculated using the conventional star-delta starting method, it turned out to be approximately 450 kVA, which was found to be a significant burden both spatially and economically. We were then consulted by the company to see if the generator capacity could be reduced. We conducted calculations using a special condenser starter called "V-Star" for some of the larger loads. It was determined that we could reduce the capacity to approximately 300 kVA, contributing to a reduction in initial costs. In the related links, we have also posted various inquiries received from customers, so please take a look. *For more details, please refer to the PDF materials or feel free to contact us.

■Soft Start / Soft Stop The machine starts up slowly and stops slowly. It prevents load collapse on conveyor belts and water hammer phenomena. ■Multi-Frequency On/Off OK It is shockless, so you can restart it with peace of mind. ■Energy Saving Frequent stops when not needed are the best energy-saving method. The machine will not break even if restarted. ■No Heat Generation Once the start-up is complete, it bypasses to commercial power. Cooling fans inside the panel are unnecessary. ■Harmonics No measures like those for inverters are needed. Economical. ■Guaranteed Start Regardless of whether the load is heavy or light, it will definitely start moving eventually. ■Gentle on Power Supply There is no large inrush current. ■Compact and Lightweight Easy to handle. ■Comprehensive Support System You can directly contact the manufacturer when you have trouble.

The "α-Beat plus" is a new type of soft starter that debuted in September 2023. It does not produce inrush current typically seen in star-delta starting methods. It does not require a cooling fan, and there is no need for harmonic or noise countermeasures, making it suitable for inverter backup. It can be delivered in a short time, has a small MCB capacity, and requires only three wires, making it compact, lightweight, and economical. It is suitable for fixed-speed equipment. Since it provides soft start and soft stop, it can mitigate shocks and can be used in various machines such as pumps to prevent water hammer, fans, conveyors, crushers, mixers, and kneaders. 【Features】 ■ A starter that does not produce inrush current ■ Suitable for inverter backup ■ Effective for preventing water hammer *For more details, please refer to the PDF materials or feel free to contact us.