Technical manual for Tavrida Electric ISM vacuum circuit breaker covering installation, commissioning, operation, and maintenance.
The Technical Manual provides all necessary information for the safe installation, commissioning, and operation of the Tavrida Electric ISM vacuum circuit breaker. It emphasizes safety requirements, legal regulations, and the need for trained personnel.
The document details the design and method of operation of the indoor switching module (ISM) and its control module (CM), installation procedures, switching functions, signalling, dimensions, technical data, and legal information. It also includes wiring diagrams, clearances, and maintenance guidelines.
| Rated voltage (12 kV version) | 12 kV |
|---|---|
| Rated breaking capacity (12 kV version) | 31.5 kA |
| Rated current (12 kV version) | 1600 A |
| Rated voltage (24 kV version) | 24 kV |
| Rated breaking capacity (24 kV version) | 16 kA |
| Rated current (24 kV version) | 800 A |
| Maximum switching cycles | up to 150 000 |
Installation, operation and maintenance must be performed only by trained and experienced personnel, following applicable legal regulations, DIN/VDE/IEC standards, and maintaining required clearances.
The contacts are closed by energising the coils of the magnetic actuators with a current impulse from the control module, which compresses the opening springs and holds the contacts closed magnetically.
The ISM is maintenance‑free for at least 25 years and can achieve up to 150 000 switching cycles without component replacement.
This manual explains 4 error codes. Open a code for its meaning, causes and what to do: