光商工 List of Products and Services

The "Isolation System" is a power supply peripheral equipment that provides stable and safe electricity to medical rooms where severe medical procedures are performed. Using equipment such as isolation transformers (IT) and current monitoring devices (LOM), it offers a safe and stable power supply that minimizes the risk of electric shock accidents. This catalog includes examples of isolation system configurations, as well as information on maintenance, inspections, updates, product specifications, and usage. [Contents (partial)] ■ Power supply equipment for medical rooms - Isolation system - Non-grounded wiring method - Insulation monitoring - Current monitoring - Products from Ko Shoko ■ Product specifications and usage - Insulation monitoring and current monitoring device (LMI-2) - Insulation monitoring display and current monitoring display (CF-151, CF-102A) - Overcurrent alarm device (LIA-10A) - Isolation transformer (CIT) - Connection examples - Construction precautions - Usage precautions *For more details, please refer to the PDF document or feel free to contact us.

• Welfare and medical equipment

We would like to introduce the "LSIG-8/LIG-11," an insulation monitoring device with leakage direction functionality for low-voltage direct grounding circuits, handled by Hikari Shoko, which manufactures and sells electrical equipment. The I0r detection method detects not only the current (I0) identified by the ZCT but also the circuit voltage. Based on this voltage, it calculates and removes the current flowing through the capacitive component (reactive component: I0c) to isolate and detect only the current flowing due to insulation resistance (active component: I0r). Our I0r detection method adopts a system that inputs the actual voltage between the circuit and ground, rather than the line-to-line voltage of the circuit, allowing for more accurate insulation monitoring based on a realistic I0r value. 【Features (LSIG-8)】 ■ I0r detection method insulation monitoring device with 8 circuit aggregation ■ Equipped with functionality for 8 circuits ■ Stores and displays numerical data from the last 10 alarm activations *For more details, please refer to the PDF document or feel free to contact us.

• Security cameras and surveillance systems

Introducing the insulation condition monitoring system (with leakage direction function) for low-voltage direct grounding circuits, handled by Hikari Shoko, which engages in the manufacturing and sales of electrical equipment. The Igr/Ior switching type insulation condition monitoring device "LIG-2" backs up insulation monitoring by switching methods in circuits with high noise levels. It can complement the advantages and disadvantages of both Igr and Ior methods. The "LNV-1B" is a device that generates a reference voltage signal (20Hz, 10V) for monitoring insulation using the Igr method, and it is used in combination with a transformer (GM30B). 【Features (LIG-2)】 ■ Igr←→Ior method switching function ■ Backs up insulation monitoring by switching methods in circuits with high noise levels ■ Complements the advantages and disadvantages of both Igr and Ior methods ■ Numeric display function (displays current values and maximum values of Igr, Ior, and Io) ■ Leakage direction discrimination function ■ Stable detection unaffected by harmonic components due to digital filtering *For more details, please refer to the PDF document or feel free to contact us.

• Security cameras and surveillance systems

The "LVG-7・8 Series" is a ground fault voltage relay. The detected voltage elements are supplied as MN signals to the "LDG-71・81 Series." 【Features】 ■ Suitable for high-voltage receiving ground fault direction relay devices ■ Analog relay (LVG-7) ■ Digital relay (LVG-8) ■ The relay interior has a plug-in structure ■ Environmentally friendly product (compliant with the European RoHS directive) *For more details, please refer to the PDF document or feel free to contact us.

• Substation equipment

The "LDG-73・83 series" is a ground fault direction relay primarily used for single circuit applications. It can detect zero-sequence voltage and zero-sequence current. The voltage element can be supplied as an MN signal to the "LDG-71・81 series." 【Features】 ■ Suitable for high voltage receiving ground fault direction relay devices ■ Analog relay (LDG-73) ■ Digital relay (LDG-83) ■ The internal structure of the relay is plug-in ■ Environmentally friendly product (compliant with the European RoHS directive) *For more details, please refer to the PDF materials or feel free to contact us.

• Substation equipment

The "LDG-71 Series" is an analog relay primarily used for branching circuits. It is a harmonic countermeasure product that operates stably against changes in voltage, frequency, and temperature, and the reset of the output contacts can be switched between automatic and manual. Additionally, it has various features, including noise resistance that makes it less susceptible to the effects of radio waves and surges. 【Features】 ■ Analog type ■ Plug-in structure inside the relay ■ High-frequency countermeasure product ■ Reset method for output contacts can be switched between automatic and manual ■ Compliant with the European RoHS directive *For more details, please request documentation or view the PDF data available for download.

• Other store equipment and supplies