Description:
The catalogue presents RELF and RELF ex type medium voltage switchgear:
air insulated (AIS),
in metal enclosure,
metal - clad,
withdrawable,
with a single busbar,
for a rated voltage up to 36 kV,
for indoor use.
The switchgear is certified by appropriate accredited bodies.
| Electrical data: | ||||||
| RELF | RELF ex | |||||
| Rated voltage | [kV] | 12 | 17,5 | 24 | 36; 40,5* | 12 / 17,5 |
| Main busbars and incoming feeder rated continuous current | [A] | 630 - 4000 | 630 - 2500 | 630 - 2500 | 630 - 1600 | 630 - 2500 |
| Rated power-frequency withstand voltage | [kV] | 28 | 38 | 50 | 95; 85,5(5min) /95(1min) |
28; 38 |
| Rated lightning impulse withstand voltage | [kV] | 75 | 95 | 125 | 190 | 75; 95 |
| Rated frequency | [Hz] | 50 | ||||
| Rated short-time withstand current | [kA/3s] | up to 40 | up to 31,5 | up to 31,5 | up to 25 (up to 31,5/1s) |
up to 25 |
| Rated peak withstand current | [kA] | up to 100 | up to 80 | up to 80 | 63/80 | up to 63 |
| Withstand for internal arcing fault | [kA] | up to 31,5/1s up to 40/0,5s |
up to 31,5/1s | up to 31,5/1s | up to 25/1s | up to 25/1s |
| Degree of protection | up to IP4X (IP3X for 4000A) | |||||
| Cubicle height | [mm] | 22001) | 22001) | 22501) | 2550 | 2250 |
| Cubicle width | [mm] | 600-950 (650-1000) | 600-950 (800-1000) |
800/1000 | 1300 | 650/800/1000 |
| Cubicle depth | [mm] | 1250/1575/1675 | 1250/1575/ 1675 |
1600/1688/1725 | 2035 | 1375/1388 |
| Compliance with standards | (PN-EN) IEC 62271-200; (PN-EN) IEC 62271-1 | |||||
| Service conditions: | |
| Ambient temperature | Relative humidity |
|
- peak short-time+40oC
|
- highest day average95%
|
|
- highest day average+35oC
|
- highest month average90%
|
|
- highest annual average+20oC
|
- highest day average vapour pressure2,2kPa
|
|
- lowest long-term-5oC
|
- highest month average vapour pressure1,8kPa
|
| Atmosphere at the place of installation |
no significant contamination with salt, vapour, dust,
smoke, flammable or corrosive gasses and lack of icing, frosting and dewing |
| Installation altitude |
up to 1000 m. a.s.l.2)
|
| Vibrations |
vibrations caused by external factors
or earthquakes negligible |
Note:
- - bay height may differ due to construction and height of the LV compartment. Details should be arranged with the manufacturer,
- - if the switchgear installation altitude is higher than 1000 m. a.s.l. the switchgear insulation level should be corrected in accordance with the standard.