CHINT NA1, Manual

Page: 41 / 108

User Order amount Order date
Number of poles
Installation mode
Type and size
Rated current
(In)A
□ □ 3P 4P
□
NA8G-3200
□ □ □
□ □ □
400 630 800
1000 1250 1600
□
1600
□
□ □ 3200
2000
2500
Factory ' s setting values: I =1In, t =2s@6I I =8I inverse-time protection,t = 0.4s; I =12I ;OFF(If on, when I ＞ 1200A I =800
R r sd sd i n n g
I ≤1200A If the user has some requirements different from the defaulting, please write the numerical values on
n
the line below
; , A;
R: R
when I =0.5I )
g n
□
NA8G-1600
Long-time delay protectionIR
Short-circuit short-time delay protectionIsd
Short-circuit instantaneous protectionIi
Ground protectionIg
Operating current setting ______ IR (1.5,2,2.5,3,4,5,6,8,10)
Operating time setting □ inverse time ______ s (0.1,0.2,0.3,0.4,OFF)
Operating current setting ______ In
Operating time setting □ inverse time ______ s □ Definite-time limit ______ s
Int
elligent
c
ont
roller
Note: Extra costs are needed for the optional functions, optional accessories and the like for the breaker.
Shunt release
Closing electromagnet
□
Button locking device
□
Three-position locking device for the draw-out socket
□
Door interlock
□
Phases barrier
□
Over voltage protection
□
Under voltage protection
□
Over frequency protection
□
Under frequency protection
□ Voltage unbalance measurement □ Phase sequence protection □ Voltage measurement □ Frequency measurement
□ Measurement of harmonic current □ Power factor measurement □ Power measurement □ Phase sequence detection
□ Voltage unbalance rate measurement □ Electric energy measurement □ Contact equivalent □ MCR make/break function
□ Load monitoring function □ Signal contact output function □ Communication function □ ZSI regional interlocking protection
Connection mode
Selecting the type
□ □ □ □ Horizontal connection Vertical connection Front connection mixed connection (connection mode to be noted)
Power input
Basic function
Optional function
(this function to
be added as
required by the
user, and to be
matched with the
controller type)
Three-section protection against over current Neutral line or grounding fault protection Voltage measurement
Test function Fault inquiry/memory function Self-diagnostic function
Note: when the product is a multifunctional controller as arranged by the user,
the communication function and the like are the basic function configuration
OFF locking
device
Mechanical
interlock
□
One breaker is provided with one lock and one key
□
Two breakers is provided with two same locks and one key
□
Three breakers is provided with three same locks and two keys
Mechanical interlock
□
Steel cable interlock
□
Connecting-rod interlock
Operating current setting ______ In (0.4,0.5,0.6,0.7,0.8,0.9,0.95,0.98,1)
Operating time setting ______ s (1,2,4,8,12,16,20,24,30)
Operating current setting ______ In (2,3,4,6,8,10,12,15,OFF)
□ □
draw-out type Fixed type (no such products for over 4000A)
□ Standard type □ Multifunctional type
□
AC400V AC230V DC220V DC110V DC24V
□ □ □ □
□ Instantaneous Time delay______s (1-2-3-4-5-6-7s provided for frame 1600, optional but not adjustable;
0.5-1-3-5s for frame 3200 and 6300l, optional but not adjustable) AC400V AC230V
□
□ □
Under voltage
release
AC400V AC230V DC220V DC110V □ □ □ □
AC400V AC230V DC220V DC110V □ □ □ □
AC400V AC230V DC220V DC110V □ □ □ □
Ac
cessories for st
andar
d
c
onfiguration
Ac
cessories for opt
ional
configurat
ion
Tel
□
NA8G-6300
□ □
□
4000 5000
6300(don’t have 4P)
11. Ordering specification
Setting of the
protection
parameter
□
2500
□
3200
□
4000
□
NA8G-4000
C
NA8G
Air Circuit Breaker
P-038 P-037 NA8G
Air Circuit Breaker
No.
Breaker trips
after closed
Technical problems Possible causes
3
4
5
6
7
8
Tripping immediately
Delay tripping
The breaker fails to break in
power-driven modeThe breaker
fails tobreak in manual mode
Energy failed to be stored
in power-driven mode
Energy failed to be stored in
manual mode
Rock rod fails to be pulled out
Breaker fails to completely reach the
SEPERATION position
The "drawer” has seized up for
foreign matters fall in it; damage in
the mechanism for putting in by
rocking or the gear thereof; Position
locking device fails to be unlocked
Intelligent controller fails to be
energized by power supply:
Improper input voltage for the
auxiliary power supplyImproper
secondary output voltage for the
transmitter Unreliable connection
between the secondary output
terminal of the transmitter and
the controller
Breaker fails to store energy
Breaker fails to be pulled out when the
open frame (draw-out) circuit breaker is
in the SEPARATION position
Open frame (draw-out) circuit
breaker fails to be put to the
CONNECTION position by rocking
No display on the
intellectual controller screen
Breaker fails
to open
1 There may be short circuit current when the matter is switched on,
and in this case you shall find and shoot the trouble
2 Check to see if there is any overload current in the circuit,
find and shoot the trouble
3 Check the setting value of the intelligent controller for reasonability,
and a re-setting process is necessary if not reasonable
4 Press the reset button to close the breaker again
1 Check the shunt release circuit for reliable connection
and the shunt release for trouble, and the release shall
be replaced if the fault is confirmed
2 Check the operating mechanism for mechanical fault.
1 Check the motor-driven energy storage mechanism control
power voltage, and the voltage shall be ≥85%Us;
check the status of the circuit connection
2 Check the motor
Check the operating mechanism for mechanical fault
Pull out the rock rod
Put the breaker completely
to the “disconnected” position by rocking
Check it for foreign matters and for condition
of the rack and gear
Turn the key on the “drawer” to unlock the matter
1 Check to see if the intelligent controller
power supply is well be connected and works well
2 Cut off the intellectual controller control
power supply, and then connect the power supply;
If the fault is still present, there may be some
troubles in the controller which has to be replaced
□ 4 switch contact □
6
swith contact □
3
N.O. and 3 N.0. (only for frame 1600 provided )
□ 4 N.O. and 4 N.0. (only for frame 3200,4000,6300 provided ) □
6
N.O. and 6 N.0(only for frame 3200,4000,6300 provided)
Energy storage motor
Auxiliary contact