Compact modules series KSMA are intended for design
of various compact, metal enclosed switchgear variants.
All live parts are placed in SF6 gas-insulated steel
containers, which provide mutual insulation of current
path elements, as well as insulation to the earth level
potential. Busbar compartments are also SF6 gas-insulated.
The electric arc quenching takes place in vacuum
interrupters built in circuit breakers and load break
switches. SF6 gas is not used as arc-quenching medium,
which provides complete environmental acceptability
of this product and eliminates operational maintenance
of the primary circuits.
Besides the obligatory manual drive, compact modules series KSMA are equipped with motor drive and set of releases for remote control of each device. This feature enables complete automatization of these switchgear type.
Compact modules series KSMA are built for indoor installation at normal service conditions, in accordance with IEC 62271-200. Nominal parameters of these modules have been confirmed by adequate certificates.
BASIC ASSEMBLIES
- Vacuum circuit breaker
- Three-positional disconnector
- Capacitive voltage indicators
- Combi-sensors or current transformers in accordance with customer’s request
- Protection module in accordance with customer’s request
BASIC TECHNICAL SPECIFICATIONS
| Rated voltage | kV | 24 |
| Rated power frequency withstand voltage 50Hz/1min. | kV | 50 |
| Rated lightning impulse voltage 1,2/50 s | kV | 125 |
| Rated busbar current | A | 2500 |
| Rated breaking capacity, modules with circuit breaker - up to... | kA | 25 |
| Rated making capacity, modules with circuit breaker | kA | 63 |
| Rated short time withstand current 3 s - up to... | kA | 25 |
| Switch-off time (short circuit) | ms | 45 |
| Rated current for three-positional disconnector | A | 2500 |
| Permissible short-circuit current (ampl.) | A | 63 |
| Permissible short-time withstand current (3s) eff. | A | 25 |
| Impulse withstand voltage 1,2/50μs - to earth | A | 125 |
| Impulse withstand voltage 1,2/50μs - across insulating distance | A | 145 |

KSMA Series
KSMV Series
VDA Series
VDAP Series
VK Series