MV Switchgears

Solid Insulated Switchgears

Solid Insulated Switchgears
7.2-12 kV SIS IS&T series

CGIS 7.2-24 kV IS&T consisting of:

  • A prefabricated metal structure consisting of a galvanized steel body with metal partitions between the compartments;
  • Indoor installation;
  • One-sided maintenance;
  • With a multifunctional switching module having three standard designs:
  • A vacuum power switch combined with a three-position disconnector-earthing switch,
  • A vacuum load switch combined with a three-position disconnector-earthing switch,
  • A three-position disconnector-earthing switch.
  • A cell in which all current-carrying parts are enclosed in solid shielded insulation.
SIS 7,2-12 kV IS&T replaces the following well-known analogs:

SIS 7.2-12 kV IS&T has the following applications:

  • City and municipal networks;
  • Distribution networks of the energy complex;
  • Oil, coal and gas industries;
  • Substations of industrial enterprises.
  • Mobile and moveable substations

CGIS 7.2-24 kV IS&T consisting of:

  • High-voltage switchgears and connecting devices;
  • Current and voltage transformers;
  • 3-in-1 Switching module, consisting of vacuum circuit breaker, disconnector and earthing switch;
  • 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.

SIS 7.2-12 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 7.2-12 kV IS&T technical parameters:
* Depth for switchgear box 1250A 25kA.
** Width for PT switchgear box
SIS IS&T