Category
10kV-24kV Indoor Load Break Switch, EXCF18
1. General description
EXCF18 load break switch offers switchgear owners and assemblers the advantages of advanced interrupting technology and proven, dependable performance in a compact design. The switch is available to switchgear assemblers as a building block for metal-enclosed and pad-mounted switchgear applications in ratings from 12 up to 24kV.
The standard EXCF18 switch includes a steel frame with stand-off insulators, a unique puffer-type arc extinguishing system, an operating mechanism and current-carrying components, including blade-type interrupters with cast hinges and jaw connectors.
Optional accessories and features include a variety of operating handles, a motor operator, auxiliary switches, a shunt trip device, fuse bases, mechanical fuse tripping, grounding switches, mechanical door interlocking and key interlocking.
2. Main technical parameter
Item | Unit | Data | |
Rated voltage | kV | 12 | 24 |
Rated current | A | 630 | 630 |
Rated power frequency | Hz | 50/60 | 50/60 |
Rated short-circuit making current | kA Peak. | 50 | 50 |
Rated peak withstand current | kA Peak. | 50 | 50 |
Short time withstand current: 1 Sec. | kA eff. | 31.5 | 25 |
Short time withstand current: 2 Sec. | 25 | 25 | |
Short time withstand current: 3 Sec. | 20 | 16 | |
IEC 62271-105(IEC 420 1990-11)Max.breaking current in co-operation with fuses IEC 62271-105(IEC 420 1990-11) | A | 1600 | 900 |
Max.fuse current(XRNT Fuse) | A | 200 | 200 |
Rated power frequency withstand voltage (50Hz 1min) | |||
-To earth and between phase | kV | 42 | 65 |
-Between fracture | kV | 48 | 79 |
Impulse withstand voltage (1.2/50μs) | |||
-To earth and between poles | kV | 75 | 125 |
-Between fracture | kV | 85 | 145 |
Mechanical life | times | 2000 | 20 |
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