永楽電気 List of Products and Services

This catalog features power equipment handled by Eiraku Electric Co., Ltd. We offer a wide variety of products, including protective devices equipped with highly reliable and diverse detection devices, monitoring and control systems compatible with a broad range of communication lines, and various distribution boards that meet different needs. [Contents] ■ Protective Devices ■ Monitoring and Control ■ Various Distribution Boards ■ Measurement, Inspection, Testing, and Others *For more details, please download the PDF or feel free to contact us.

• Power distribution and control panels
• Monitoring and Control Equipment

This catalog is a product catalog featuring information and communication equipment handled by Eiraku Electric Co., Ltd. We introduce a wide variety of products, including optical terminal boxes, wiring boxes, communication equipment boxes, as well as "small automatic broadcasting devices" installed at relatively small stations with three or fewer home tracks, and IP-based "central monitoring devices." [Contents] ■ Wiring boxes and terminals ■ Broadcasting equipment ■ Telephone equipment ■ Information equipment ■ Signal transmission equipment ■ Power supply equipment ■ ITV devices *For more details, please download the PDF or feel free to contact us.

• Wiring devices
• Power distribution and control panels
• Monitoring and Control Equipment

Our company offers a "Window-type Fault Selection Device (50F)" that continuously monitors the feeding current within a fault detection window defined by the current setting value I (Y-axis) and time axis ΔT (X-axis). When the current exceeds the ceiling (setting value) of the window, it is judged as a fault. This device is installed in the feeding circuit of the DC electrified section and features a constant display function for the protective circuit current. There are two types available: 2 circuits/unit and 4 circuits/unit, which enhance reliability through dual current detection. Additionally, it detects feeding faults by continuously monitoring the current increase amount (increment value iw) at regular intervals (40/80ms). 【Features】 ■ Suitable for high-acceleration, high-density, and large-capacity trains ■ Compatible with regenerative train operation ■ Quick detection, visible observation of fault current, and easy estimation of fault current ■ Sufficient reliability, compact design, and low cost ■ By adding a function to distinguish vehicle faults (optional), it prevents unnecessary opening of the DC high-speed circuit breaker at the substation during vehicle faults. *For more details, please feel free to contact us.

• Substation equipment
• DC Power Supply