CHINT NA1-1000 User Manual

.5.
.4.
1. General
1.1 Application scope
NA1 series air circuit breaker is suitable for the circuit of AC 50Hz/60Hz with rated service voltage 400V, 690V and rated service current up to
6300A. It is mainly used to distribute electric energy and protect circuits and electric equipment against over-load, under-voltage, short-circuit
and single-phase earthing fault. With intelligentized and selective protection functions, the breaker can improve the reliability of power supply,
and avoid unnecessary power failure. The breaker is applicable for power stations, factories, mines (for 690V) and modern high-buildings, especially
for the distribution system of intelligentized building.
1.2 Standard: IEC/EN 60947-2.
2. Operation Conditions
2.1 Temperature Condition: -5℃~40℃; the average value within 24h shall not exceed +35℃(special situation excluded);
2.2 Altitude:≤2000m;
2.3 Pollution grade: Grade 3;
2.4 Air conditions:
At mounting site, relative humidity not exceed 50% at the max temperature of +40℃, higher relative humidity is allowable under lower temperature,
RH could be 90% at +20℃, special measures should be taken to occurrence of dews;
2.5 Note: Without the intelligent controller, the breaker functions as a switch-disconnector.
3. Structure
Enclosure
Fault-breaking indicator
reset button
Making button
Breaking button
Breaking/making
indicator
Rotary handle
Energy storage &
release indicator
Name plate
Structure for in and out
Rotate out
Rotate in
Under-voltage release
page 50
Shunt release
page 50
Closing release
page 51
Auxiliary contact
page 51
Motor-driven energy
storage mechanism
page 51
Locking device
page 52
Intelligent controller
page 32
4. Main technical parameter
Type
NA1-1000
Rated ultimate short circuit breaking capacity
Rated service short circuit breaking capacity
Rated short-time withstand current
Icu=42kA 400V
Ics=30kA 400V
Icw=30kA 0.5s 400V
Rated current In (A)
200 400 630 800 1000
Number of poles
3, 4
Rated voltage Ue (V)
400
Rated insulation voltage Ui (V)
690
Rated current of N-pole In (A)
50%In, 100%In
Fixed disconnection time (ms)
23~32
Intelligent
controller
Standard type (M)
Communication type (H)
Operation
performance
Electric life
Mechanical life
Connection pattern
Weight(kg)
1000
Non-maintenance 3000
Maintenance 10000
Horizontal, Vertical
38/55
22/26.5
Air Circuit Breaker
Drawout 3P/4P
Fixed 3P/4P
Fixed type breaker/switch-disconnector
Fixed plate for the fixed type breaker
Drawer seat
Body
+ =
Drawout type breaker/switch-disconnector

CHINT NA1-1000 Specifications

General

Brand	CHINT
Model	NA1-1000
Category	Circuit breakers
Language	English