Secondary Gas Insulated Switchgears
Secondary Gas Insulated Switchgears
CGIS 7.2-24 kV IS&T series
CGIS 7,2-24 kV IS&T is:
- A prefabricated metal structure consisting of a galvanized steel body with metal partitions between the compartments;
- With a stainless steel gas-insulated tank;
- Indoor installation;
- Front-sided maintenance;
- With vacuum circuit breakers,
- With load break switches.
CGIS 7,2-24 kV IS&T replaces the following well-known analogs:
CGIS 7.2-24 kV IS&T has the following applications:
- City and municipal networks;
- The system of own needs and power output of power plants;
- Distribution networks of the energy complex;
- Oil, coal and gas industries;
- Substations of industrial enterprises.
CGIS 7.2-24 kV IS&T consisting of:
- High-voltage switchgears and connecting devices;
- Current and voltage transformers;
- Vacuum circuit breakers in SF6 insulation;
- Load break switches in SF6 insulation;
- Auxiliary devices (cable adapters, main busbar adapters, surge arresters);
- Protection, monitoring and control units for each cabinet:
- Protection relays and automation devices;
- Predictive systems (contacts temperature control, acoustic sensors for partial discharge, etc.)
- Systems designed according to the Customer's technical specifications.
- For the substation as a whole:
- Auxiliary needs systems (APS/PSN) and operational current (DC current panels);
- Relay protection and automation systems;
- Automation, telemechanics and telemetry panels and boards;
- Counter panels and boards;
- Communication panels;
- Dispatcher's workstation;
- Intersystem communications.
CGIS 7.2-24 kV IS&T for digital substations and SmartGrid systems:
- Integration of all secondary devices using a single IEC-61850 protocol;
- Use of a single connection controller with automation, telemechanics and telemetry. Protection relay, monitoring devices, Feeder fault sensor, digital sensors - are connected to the control panel;
- Acoustic partial discharge sensors and cable joint condition monitoring system;
- Digital current sensors;
- Digital voltage sensors;
- Innovative Feeder Fault Detection system.
CGIS 7.2-24 kV IS&T technical parameters:
* Width is calculated as:
--- For monoblock: the sum of the widths of all functions, and 23 mm for left and right sides.
Example: standard monoblock CCVC for 12 kV is 4x325+2x23=1346 mm
--- For separate switchgear box: width of function, and 23 mm for left and right sides. Example: standard separate switchgear box V for 12 kV is 325+2x23=371 mm
** Width of functions in monoblock and separate SGB for 7,2-24 kV solutions with Cable Testing Device
*** Width of functions in monoblock and separate SGB for 24 kV.
--- For monoblock: the sum of the widths of all functions, and 23 mm for left and right sides.
Example: standard monoblock CCVC for 12 kV is 4x325+2x23=1346 mm
--- For separate switchgear box: width of function, and 23 mm for left and right sides. Example: standard separate switchgear box V for 12 kV is 325+2x23=371 mm
** Width of functions in monoblock and separate SGB for 7,2-24 kV solutions with Cable Testing Device
*** Width of functions in monoblock and separate SGB for 24 kV.
