Mitsubishi Electric C Series Handling And Maintenance page 17

NV400-SEW, NV400-HEW, NV400-REW
NV630-SEW, NV630-HEW
NV800-SEW, NV800-HEW
Rated current label
Transparent cover
Rated
Current
current setting
250 300 .7
350
225
.5
200
In(A) I (×400A)
r
60
TEST
12
T (s)
L
Long time-delay
operating time
Step setting type:
Rated current In
Long time-delay operating time T
Short time-delay tripping current I
Short time-delay operating time T
Pre-alarm current I
Note 1.
Current setting Ir becomes effective
when rated current In is set as maximum.
• For setting sensitivity current and operation time, open the cover in the
same procedure as for tripping characteristic setting.
• A slotted head screwdriver of 4.5mm width and 0.6mm thickness is
suitable for the setting.
• Stopping in the middle of each set values makes sensitivity current or
operating time unstable in some cases.
Be sure to set exactly at the position of each set value.
• At setting refrain from applying force more than necessary as such can
cause failures.
(Adequate operation torque is 0.05N·m maximum.)
15
Trip button
(PTT)
For setting, turn
the arrow of each
dial to the scale
position desired
Short time-delay
tripping current
4 5 6 8 10
.8
Instantaneous
12
7
3
6
tripping current
14
8
1 16
2 10 4
I (×In, Ir) I (×400A)
S I
.2
100
.1 .8 .9 Pre-alarm
current
150
1.0
.3 .7
.06
T (s) I (×In, Ir)
P
S
Short time-delay
operating time
Continuously adjustable type:
Current setting Ir (Note 1)
Instantaneous trip current I
L
S
S
P
Sensitivity current setting dial
Operation time setting dial
(for time delay type)
Leakage indicator
(comes out at leak tripping)
Test button
OVER LED (Red)
PAL LED (Yellow)
70% LED (Green)
Replacement label
Connector
Setting dial
cover
(1) Open the transparent cover.
(2) Set tripping characteristics by turning the dials.
For turning the dials for characteristic setting,
use a screwdriver as illustrated at left.
1 A slotted head screwdriver of 4.5mm width
and 0.6 mm thickness at the top is suitable
for the setting.
2 At setting, refrain from applying force more
than necessary as such can cause failures.
(Adequate operation torque is 0.05N·m
maximum.)
3 Except for the dials of current setting lr and
instantaneous tripping current l
arrow of the setting dials within the range of
the thick line of setting value.
Stopping the arrow in the middle may ad-
vance the set value to the next one in some
cases.
* As for Is setting, a set value may advance
I
(3) Take the seal of the same value for setting value
out of the replacement labels, and stick the la-
bel to the top of the handle.
(4) Close the transparent cover.
to the next one in some cases.
For setting, turn the arrow
of each dial to the scale
position desired.
, keep the
l