Prefabricated chambers of one-sided service are designed to receive and distribute electrical energy of three-phase alternating current in networks with isolated or grounded neutral.
In switchgears with Prefabricated chambers of one-sided service cells, electrical equipment, apparatus and instruments are permanently mounted without pull-out elements with a partial enclosure.
Prefabricated chambers of one-sided service cells are a unified welded frame made of bent sheet steel. Each chamber is divided by sheet steel into three compartments, which respectively house:
- Busbars and busbar disconnector;
- Vacuum circuit breaker and current transformer;
- Line disconnector and cable terminations.
The safety of service and the sequence of operations is ensured by a device in the chambers with a corresponding mechanical interlock, which does not allow operating the disconnector when the circuit breaker is on, turning on the earthing knives when the line disconnector is on, opening the door when the busbar disconnector is on, etc.
Prefabricated chambers of one-sided service cells are manufactured according to a questionnaire compiled for each customer individually, with a detailed study of both the main and additional equipment, taking into account the wishes of the customer.