nader NDW3 Series Manual page 20

Controller
Controller is one of the main components of the circuit breaker, which can provide the function of
protecting the overload, short circuit, grounding, current unbalance, overvoltage, undervoltage, voltage
unbalance, overfrequency, underfrequency, reverse power and other failures, and realize reasonable operation
of the power grid through the load monitoring, required value protection, regional interlocking and other
functions. Controller has the function of measuring the current, voltage, power, frequency, electric energy,
required value, harmonic and other power grid parameters; and the function of recording the fault, alarm,
operation, maximum historical current, contact wear and other operating maintenance parameters. When the
power network is carrying on communication network, the controller can realize the remote sensing, remote
communication, remote control and remote regulating at the remote terminal of the electric power automation
network.
3.1 Type of Controller
Model
NWK21/NWK31
Controller
Pictures
NWK31 and NWK32 are applied to NDW3-1600, NWK21 and NWK22 are applied to NDW3-
2500,NDW3-4000,NDW3-6300 and NDW3-7500
Internal & confidential file
文件编号:NDT2920213
NWK21（V）/NWK31（V）
第 20 页 共 149 页
文件版本:17
3
NWK22 /NWK32
NWK22（V）/NWK32（V）
NWK22（P）/NWK32（P）