NM3LFC series intelligent reclosing

Function and purpose

Integrate overload protection, short circuit protection, overvoltage protection, undervoltage protection, voltage loss protection, automatic closing, control, and multiple communication functions

Detailed description

Parameters:
Frame current: 250-800A
Maximum Icu: 70kA
Working voltage: AC230V/240V, 400V/415V, 500V, 690V
Using ambient temperature: -40°C~+70°C

Advantages/core functions:
01 Comprehensive functions
Has more than ten protection functions such as overload long delay, short circuit short delay, short circuit instantaneous, grounding protection, overvoltage, undervoltage, phase loss, and zero break
02 Safe and reliable
Double protective structure of upper and middle covers effectively prevents external factors such as static electricity from causing failure of electronic components
03 Intelligent operation and maintenance
With RS485, HPLC A variety of communication methods can be used remotely to achieve intelligent unattended operation

Detailed parameters

< /tr>< /tr> td>< tr>240

Parameter classification	Parameter item	Parameter value
Product type No.	NM3LFC-250
	NM3LFC-400
	NM3LFC-630
	NM3LFC-W630
	NM3LFC-800
Rated current In(A)		250
		400
		630
		630< /td>
		800
Number of poles		3P+N
Rated current In(A)		5 0/63/80/100 125/160/200/250
		250/315/400
		400/500/630
		630
		630/700/800
Rated insulation voltage Ui(V)		1000
Rated impulse withstand voltage Uimp(kV)		8
		12
	< /td>	12
		12
		12
Rated operating voltage Ue(V)		AC380/415
Rated operating frequency f (Hz)		50
Rated residual short-circuit making (analysis) capacity Icm (kA)		12.5< /td>
		20
Rated residual operating current IΔn (mA)		50/100/150/200/300/400/500/600/800/100 0, adjustable, automatic tracking of leakage, OFF
Rated residual non-operating current IΔno (mA)		0.8In
Automatic reclosing time (s)		20~60
Residual operating current time type (s)		Delay type/non-delay type
Delay characteristics		2IΔn limit inaction time (s)
		1IΔn
		2IΔn
		5IΔn
	10IΔn
		10IΔn
Non-delay type		-
	< /td>	0.06
		0.1
		0.2
		≤ 0.3
		≤ 0.5
		≤ 0.8
		≤ 1
		≤ 0.4
Delay type		0.03
		0.02
		0.03
		≤ 0.15
		≤ 0.3
		≤ 0.3
Applicable working environment temperature (℃)		-25~+80
Analysis capability code		C
		S
		C
		Q
		S
		Q
		C
		S
		Q
Rated ultimate short-circuit breaking capacity Icu(kA)		36
		50
		36
		50
		36
		50
		36
		50
		36
Rated operating short-circuit breaking capacity Ics (kA)		36< /td>
		36
		36
		50
		36
		50
		36
		50
		36
Rated instantaneous tripping current, Is1(kA)		3
		8
		8
		10
		10
Mechanical life (times)	< /td>	15000
		8000
		8000
		8000
		8000
Electrical life (times)		4000
		3000
		3000
		2000
		2000
Outline and installation dimensions ( mm)		142
		184
		184
		240
		101.5
		140.5
		140.5
		157
		157