PRODUCT INFORMATION
Short-circuit indicator
Type MF
The short-circuit indicator can be used in radial networks with one input and open-ring networks. The indication of the short-circuit is done by one LED indicator for each phase. The sensors are divisible and can be retrofi tted on the cable.
The display device is powered by an exchangeable lithium battery. Alternatively the display device can be connected to an auxiliary power supply that should not fail in case of a fault.
The short-circuit indicator type MF consists of:
– One display unit for displaying short-circuits
– Three sensors type LK or SK for detecting short-circuits
The short-circuit indicator type MF is available in two versions:
Version MF-L: The potential-free connection between the sensors and the display unit is done by fi bre optic cables. The sensor can be mounted on screened and unscreened cables.
Version MF-S: The connection between the sensors and the display unit is done by cable. The sensors must be mounted on screened cables only.
| Order Data | ||
| Type MF-L | | panel-mounted | 25.20.10 |
| Type MF-L | | surface-mounted | 25.25.10 |
| Type MF-S | | panel-mounted | 25.30.10 |
| Type MF-S | | surface-mounted | 25.35.10 |
Features and Benefits
MF-L: Seven trip currents between 200 A and 1200 A
MF-S: Five trip currents between 200 A and 1000 A
Response delays: 40 / 60 / 80 / 160 ms
Button to test the function of the display unit
Power supply:
– lithium battery type AA 3.6 V
– or 12-110 V DC
– or 115/230 V AC
Reset function:
– Manual
– Time: 1 / 2 / 4 / 8 h
– Optional: by recovering auxiliary power supply
Contacts for remote monitoring
LED indication
Surface-mounted and panel-mounted housing available
Optional blinking unit type BL4.1 for outdoor indication
Downloads
 assembling_instructions_MF-E_Rev3e
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File size: 726.33 KB |
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| datasheet_MF-E_Rev3e
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File size: 736.47 KB |
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