18
JEP0-IL9559
External dimensions and Panel cut-out
152
167
3
83
.5
83
.5
14-M3.5 screw
32
φ
138
136
104
13
2-M6 screw
124
124
φ
140
～φ
142
2-
φ
7 hole
Minimum pitch
180
Minimum pitch
1
80
Fig. 7-9 MDG-A4V-R (Unit: mm)
152
167
3
83
.5
83
.5
14-M3.5 screw
32
φ
138
136
104
2-M6 screw
46
11
36
124
124
φ
140
～φ
142
2-
φ
7 hole
Minimum pitch
182
Minimum pitch
1
80
Fig. 7-10 MDG-A4V-RD (Unit: mm)
Improvement on the reliability of protection function
Any parts and materials applied to the protection relay have limited lifetime which will bring the degradation to
the relay. The degree of degradation will be variable depending on the purpose, aging,
usage environment, and
unevenness on the performance of each part.
Our company designs its products so that the recommended renewal period is 15 years or more.
However, there may be some possibilities to occur any failures before reaching 15 years due to above reasons.
To prevent unwanted operation or no operation of relay, it is recommended to apply the relay with self-diagnosis
function and/or multiplexing relay system such as dual or duplex scheme.
Same as the center of panel cut-out
