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Medium voltage switchgear QMT
75
Installa
tion manual
4.5
Removal and insertion of fuses
For the replacement of fuses use the I type striker according to IEC 282-1: Energy 1±0,25J, Free
travel 4mm, Further travel 16mm, Min. withstand force 20N, Max duration 100ms.
The maximum transfer current must to be less than 1800A @ 12kV or 1400A @ 24kV.
REMOVAL
When the fuse trips in the module FS, the Load Break Switch opens and the indicator in Fig. 52
changes from WHITE to RED.
1. Lift the silicone cover
2. First remove the fuse from the upper pliers and then from the lower pliers.
INSERTION
1. Lift the silicone cover (Fig. 53)
2. Put the striker side of the fuse upwards (only for the FS type modules).
3. First insert the fuse in the lower pliers then in the upper pliers.
4. Lower the silicone cover. (Fig. 54)
Make sure that the indicator A (Fig. 52) has been reset (WHITE colour).
Fig. 53
Fig. 52
Fig. 54
A
Summary of Contents for QMT Series
Page 1: ...Y4419D 01GF 18W12 QMT Manuale installatore Installation manual ...
Page 2: ...2 IT UK ITALIANO 3 ENGLISH 45 QMT ...
Page 15: ...Quadri Media Tensione QMT Manuale installatore 15 Tipo 2 Tipo 3 Tipo 4 ...
Page 44: ......
Page 57: ...Medium voltage switchgear QMT 57 Installation manual Type 2 Type 3 Type 4 ...
Page 86: ...86 Notes ...
Page 87: ...87 ...