CHINT NA1-1000 User Manual

.39..38.
Wiring diagram of the earthing fault protection.
Transformer
Current transformer
Intelligent
controller
N
Transformer
Current transformer
Intelligent
controller
N
Transformer
Current transformer
Intelligent
controller
PE
N
×In ×In
10
Transformer
Current transformer
Intelligent
controller
Load monitor characteristic.
14.2 The intelligent controller of NA1-2000, 3200, 4000, 6300
14.2.1 The standard M type intelligent controller (NA1-2000, 3200, 4000, 6300)
The M type intelligent controller is the core part of the NA1 Air Circuit Breaker to protect the electric circuit and the power supply against
the dangers such as overload, short circuit and single-phase earthing fault. The controller adopts highly-integrated and high-performance
digital signal processor that featuring power functions and reliable performance to perform real-time processing to the signal so as to
achieve various protection function and numerous auxiliary functions.
IL IS II I
t
t
IG I
Selectivity protection Earth fault protection
Appearance and panel illustration
Reset button
Rated current
Ammeter display window
Select key
Clear key
Frame size rated current
Fault indicator
Protection indicator
Fault checking key
Function key
Program interface
Air Circuit Breaker

CHINT NA1-1000 Specifications

General

Brand	CHINT
Model	NA1-1000
Category	Circuit breakers
Language	English