CHINT NA1-2000X User Manual

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 recordsTen
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 recordsTen
6 alarm recordsTen
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
(max65/75kA)
Isd=(1.5~15)Ir(max40/50kA)
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 2tsd Non-trip
In the 2tsd 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:
≤0.85Ii
＞1.15Ii
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= (8Ir) 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 8Ir, controller will operate according to over-current protection characteristic curve. When I is over both of inverse
time set value and 8Ir, controller will operate according to definite time protection. The other is definite time protection and set time is
0.11s, 0.21s, 0.31s, and 0.41s. 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

CHINT NA1-2000X Specifications

General

Brand	CHINT
Model	NA1-2000X
Category	Circuit breakers
Language	English