Product Overview
Low power loss, low maintenance spending, reliable performance, flexible configuration are required on the medium voltage switchgear. Due to its features such as long service life, compact size and recycling, Eaton RVAC ring main units have proved successful in terms of economy and ecology. It appears more important for Underground cabled power distribution network in improving its devices and other aspects, with rapid
development of urbanization; ring main units (RMU), as the major device for protection and segment isolation to ground cabled distribution network, are widely used in urban power grids, due to its safe and reliable performance, compact and superior cost effectiveness.
Product Features
RVAC is developed to be an economical and ecological user-friendly power distribution device of compact size, reliable performance and ļ¬exible conļ¬guration, with the application of advanced R&D technical resources.
Capacitive voltage detection system for verification of safe isolation from supply
Each panel type within the RVAC family is equipped with a standard three phase Voltage Detection System for voltage testing. The VDS shows the operator if the panel is isolated from supply or not.
Logical mechanical and electrical interlocks prevent incorrect operation
Within the RVAC design misoperation by an operator is prevented by using different interlocks. The interlocks are mechanical and electrical. For example electrical and mechanical interlocks prevent operation of the change-over switch when the circuit breaker is switched on. All mechanical interlocks are constructed in such a way that they directly block the mechanism.
Only when the cable compartment door is closed, the device can be operated to power-on position
Only when the switch is operated to Earthing position, the cable compartment door can be opened in a normal way. Only when the cable compartmentdoor is closed completely, a closing operation can be conducted on the earthing switch. After the earthing switch is opened, the mains switch can conduct closing operation to complete power-on process.
Features and beneļ¬ts
The beneļ¬t of a sealed for life tank
A āsealed for lifeā steel enclosure contains all primary parts and driving mechanisms
ā¢ Maintenance free
ā¢ Internal arc proof
ā¢ Protection degree up to IP67 for prevention of summer floods
The beneļ¬t of a compact design
ā¢ Minimal floor space
ā¢ Low building costs
ā¢ Easy to install
Computer simulation design
3D simulation design analysis softwares are applied during R&D process to strengthen design capacity, thus improving product reliability greatly.
ā¢ Electric field analysis
ā¢ Magnetic field analysis
ā¢ Gas pressure and motion analysis
ā¢ Mechanical strength analysis
ā¢ Mechanical movement (speed and force) analysis
ā¢ Finite element analysis
