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Medium voltage switchgear QMT
71
Installa
tion manual
4.2
Use of LT operating mechanism
This operating mechanism has three positions:
CLOSE (1), OPEN (0), EARTH ( ). There are four possible operations:
Operation
Procedure
First position
Final position
PUT
TING INT
O SER
VICE
1
Earth
Open
• Close the door. (See the instructions
concerning the module)
• Unlock the keylock “earthing switch
closed” E (in case it is present)
• Insert the operating lever in B and
turn it clockwise.
2
Open
Closed
• Unlock the keylock “switch open” C
(in case it is present)
• Insert the operating lever in A and
turn it clockwise
PUT
TING OUT OF SER
VICE
3
Closed
Open
• Insert the operating lever in A and
turn it anti-clockwise
4
Open
Earth
• Unlock the keylock “earth switch
open” D (in case it is present)
• Insert the operating lever in B and
turn it anti-clockwise
• Open the door (See the information
concerning the module)
A system with a padlock and a motor can be
mounted on LT operating mechanism. In this
way the manual operations can be prevented
and the operations no. 2 and 3 described above
can be carried out electrically.
Fig. 49
A
B
D
C
E
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 ...