The equipment for melting glaze-ice and rime deposition, the Controlled Rectifier for Melting Ice (CRMI), makes it possible to automate the process of regulating the melting current; to melt ice on overhead lines of different voltage classes and lengths from a single substation; and to communicate with the substation's automatic process control system and the automated ice formation control system.

Components:

• Rectifier bridge;
• Control, regulation, protection and automation system (CRPAS) consisting of two components: automatic control system cabinet (CRMI ACS) and control panel (CRMI CP).

CRMI power equipment is placed in a standard 20-foot transport container of 1SS type (GOST R 53350-2009). The CRMI container is installed on a foundation foundation in an open-air part of the substation.

The control panel (CP) of the CRMI is an electrical cabinet located in a heated room (usually in the general substation control centre) and is connected to the container by cables.

The installation has the following characteristics:

1. the ability to control the melting current, including signals from ice sensors;
2. smooth start-up and shutdown of the rectifier to avoid overvoltage and facilitate the operation of switching of equipment;
3. maintaining a constant melting current, which is especially important when melting ice on overhead ground wires with optical cables;
4. digital microprocessor-based control, regulation, protection and automation system (CRPAS);
5. container-type installation with a forced air closed-loop cooling system;
6. minimal requirements for installation on site (only a lightweight foundation for the container and an electric raceway between the rectifier bridge and the CRPAS cabinet);
7. the ability to transport the system directly on a railway platform or by other means of transport (the container is both a CRMI case and has a transport packaging).

The installations are easy to transport and do not require the construction of a special building.