14.3.3 Controller functions list
M type
1 over-current protection (overload, short delay, instantaneous, earthing);
vector sum grounding mode.
2 Neutral line protection
3 Current measurement
4 two test functions:
(1)Instantaneous trip test simulated by mechanical button
(2)Other trip tests simulated by software
5
Ten
fault records
6
alarm records
Ten
7 MCR protection
8 operation times records
9 thermal capacity
10 overload pre-alarm
H type
1 over-current protection (overload, short delay, instantaneous, earthing);
vector sum grounding mode.
2 Neutral line protection
3 Current measurement
4 two test functions:
(1)Instantaneous trip test simulated by mechanical button
(2)Other trip tests simulated by software
5
fault records
Ten
6
alarm records
Ten
7 MCR protection
8 operation times records
9 thermal capacity
10 overload pre-alarm
11 communication function: MODBUS protocol
12 four DO function (optional)
3M type
1 all functions of M-type controller are included
2 HMI:128*64 LCD
3H type
1 all functions of 3M-type controller are included
2 voltage measurement and protection
3 frequency measurement and protection
4 power measurement and protection
5 electric energy, power-factor, harmonic measurement
6 communication function: MODBUS protocol
7 DI/DO function
0.01
0.1
1
10
100
1000
0.5
5
T
(
s
)
I(xIr)
3
30
I(xIn)
Ir=(0.4~1)In
tr=(15~480)s
2
I t ON
2
I t OFF
0.4
0.3
0.2
0.1
Ii=(1.5~20)In
(
max
65/75kA)
Isd=(1.5~15)Ir(
max
40/50kA)
14.4 specifications of characteristics
14.4.1 Over-current protection characteristic curve
Over-current protection characteristic curve
±10%
15
8.4
30
16.9
60
33.7
120
67.5
240
135
480
270
±10%
±10%
±10%
0.1
0.06
0.2
0.14
0.3
0.25
0.4
0.33
±15%
±15%
≤0.9Isd
>1.1Isd
tsd
Returnable time
(1.5~15)
Ir+ OFF
14.4.2 Overload long time-delay protection
Operating characteristics
Current Ratings
Range(Ir)
tolerance
Current
Action time(s)
Time
tolerance
(0.4~1)In+ OFF
≤1.05Ir
>1.3Ir
1.5Ir(setting time)
2.0Ir
>2h Non-trip
<1h trip
Phase N Overload and
Over-Current Characteristic
100% or 50%(Applicable to 3P+N or 4P)
Current Ratings
Range(Isd)
tolerance
Current
Action time(s)
Time
tolerance
In the 2ts
d
Non-trip
In the 2ts
d
Delayed-trip
a. When the intelligent controller is FrameⅡ (Inm=3200A、4000A), Isd shouldn’t be more than 40KA.
b. When the intelligent controller is FrameⅢ (Inm=6300), Isd shouldn’t be more than 50KA.
c. When tsd is 0.1s or 0.2s, time permissible error is ±0.040s.
Note:
≤
0.85
I
i
>
1.15
I
i
In the 0.2s Non-trip
In the 0.2s trip
±
15%
(1.5~20)In+ OFF
14.4.4
Short-circuit instantaneous protection
Instantaneous protection trip time should be less than 100ms.
Operating characteristics
Current Ratings
Range(Ii)
tolerance
Current
Time tolerance
a. When the intelligent controller is FrameⅠ (Inm=2000A), Ii shouldn’t be more than 50KA.
b. When the intelligent controller is FrameⅡ (Inm=3200A、4000A), Ii shouldn’t be more than 65KA.
c. When the intelligent controller is FrameⅢ (Inm=6300), Ii shouldn’t be more than 75KA.
Note:
14.3
Short
-
circuit
short
-
delay
protection
2
2
Short
-
circuit
short
delay
protection
has
two
protection
modes
.
One
is
inverse
time
and
definite
time
protection
.
I Tsd
= (8
Ir
)
tsd
works
when
current
is
low
.
In
this
formula
,
I
is
actual
current
,
Tsd
is
actual
trip
time
,
tsd
is
set
trip
delay
time
.
When
I
is
over
inverse
time
set
value
but
below
8
Ir
,
controller
will
operate
according
to
over
-
current
protection
characteristic
curve
.
When
I
is
over
both
of
inverse
time
set
value
and
8
Ir
,
controller
will
operate
according
to
definite
time
protection
.
The
other
is
definite
time
protection
and
set
time
is
0.11
s
, 0.21
s
, 0.31
s
,
and
0.41
s
.
When
I
is
over
Isd
but
below
Ii
,
controller
will
operate
according
to
definite
time
protection
.
Operating
characteristics
C
NA1
Air Circuit Breaker
P-086
P-085
NA1
Air Circuit Breaker
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