03
No.
1
2
3
4
Motion time
No motion within 2h
Motion within 2h
Motion within 2min
2s
＜
Tp
≤
10s
Table 4 Auxiliary Circuit Technical Parameters
Product model
NJBK6-36/3, NJBK6-36/9,
NJBK6-36/24, NJBK6-36/36
1
2
3
4
5
6
Rated insulation voltage (V)
Rated impulse withstand voltage Uimp (kV)
Agreed free air heating current Ith (A)
Rated operating voltage Ue(V)
No.
380
2.5
5
240V
380V
AC-15
1.5
0.95
Use type under rated operating voltage and
rated operating current Ie(A)
SCPD model
6A Gg
2.1
Motion characteristic
2.1.1 See Table 5 for the motion characteristic of overload protection
Table 5 Motion Characteristic of Overload Protection
Setting current
multiple
1.05
1.2
1.5
7.2
Cold
Thermal
Cold
Starting
condition
Ambient air
temperature (℃)
+
20
2.1.2 Motion characteristic of phase loss protection: When any one of the
three-phase currents of the main circuit is open, the protector motions for
3s, with a relative error of ± 20%.
2.1.3 Motion characteristic of three-phase unbalance protection: When the
three-phase current of the main circuit conforms to the following formula,
the protector motions for 3s with a relative error of ± 20%.
30%
100%
|
|
i
3
1
i
>
×
-
=
avg
avg
I
I
I
Max
Where:
