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.
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.
Busbar and cable connections between the modules are performed by insulated busbars or cables with plug-on connectors according to IEC 60502 and DIN 47636 standards. 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 vacuum load break switch
- Three-positional or two-positional disconnector
- Earthing device behind vacuum circuit breaker
- 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 | 38 |
| Rated power frequency withstand voltage 50Hz/1min. | kV | 50 | 70 |
| Rated lightning impulse voltage 1,2/50 s | kV | 120 | 170 |
| Rated busbar current - up to... | A | 2500 | 2500 |
| Rated breaking capacity, modules with circuit breaker - up to... | kA | 25 | 25 |
| Rated making capacity, modules with circuit breaker - do... | kA | 63 | 63 |
| Rated short time withstand current 3 s - up to... | kA | 25 | 25 |
| Switch-off time (short circuit) | ms | 45 | 45 |
| Rated current, modules with 3-positional load break switch | A | 630/1250 | 630/1250 |
| Short time withstand current, modules with 3-positional lbs | kA | 16(25) | 16(25) |
| Rated disconnector current (transformer feeders) | kA | 2500 | 630 |

KSMA Series
KSMV Series
VDA Series
VDAP Series
VK Series