Low Voltage Outgoing Line Monitoring Unit - Terminal Module

• Customization: Available
• After-sales Service: Two Years
• Warranty: Two Years
• Model NO.: LON823
• Display: Digital
• Installation: Direct Connected
• Electric Equipment: Three-phase Four-wire
• Theory: Electronic Meter
• Power Meter Connection: Feed-through Type
• Type: Energy Meter
• Certification: ISO
• Customized: Customized
• Transport Package: Carton
• Trademark: Linkelec
• Origin: Made in China
• HS Code: 90283012
• Production Capacity: 50000 Per Month

Product Description

                                          Three phase intelligent color screen terminal electric meter
 

1.Product profile
The low-voltage outgoing line monitoring unit consists of a terminal module and an expansion module. The terminal module realizes monitoring of one outgoing line, and other outgoing lines can be configured with expansion modules for monitoring. One terminal module can be combined with up to eight expansion modules to achieve monitoring of nine low-voltage outgoing lines.

 

 

2.Technical indicators

performance parameter		Performance index
accuracy class		Voltage: ≤ 0.5%; Current: ≤ 0.5%; Active power: ≤ 0.5%; Reactive power: ≤ 1%; Power factor: ≤ 0.5%; Apparent work
		Rate: ≤ 1.0%; Electricity quantity: ≤ 0.5%; Frequency: ≤± 0.02Hz
Connection mode		Three-phase four-wire/three-phase three-wire
input voltage	rated voltage	AC220V
	frequency range	45~65HZ
	measuring range	154V~286V
incoming current	rated current	AC 5A
	frequency range	45~65HZ
	measuring range	20mA~6A
working power supply	rated voltage	AC 220V (allowable deviation -20%~+20%)
	Power consumption	Not more than 3W, 5VA
Switch input	Input form	Dry node (internal DC24V)
communication interface	Interface form	RS485, carrier module
	protocol	Modbus,DL/T645
environmental conditions	Ambient temperature and humidity	Temperature range:-40 ~+70ºC
		Maximum temperature change rate: 1.0ºC/ min
		Relative humidity: 10 ~ 100%
		Maximum absolute humidity: 35g/m
	operational environment	There is no explosion danger, corrosive gas and conductive dust, serious mold and violent vibration shock source.
	storage temperature	-40ºC~80ºC
Clock accuracy	Daily error	≤0.5 seconds/day, supporting communication timing.

3.Selection specifications

functional module	serial number	Function point	Function point description	Terminal module
				LON823
Real-time measurement	1	phase voltage	Phase voltage: Ua, Ub, Uc	√
	2	line voltage	Line voltage: Uab, Ubc, Uca	√
	3	Voltage sequence component	Voltage sequence components: U1, U2, U0	√
	4	phase current	Phase current: Ia, Ib, Ic	√
	5	active power	Active power: Pa, Pb, Pc, p.	√
	6	wattless power	Reactive power: Qa, Qb, Qc and Q.	√
	7	apparent power	Apparent power: Sa, Sb, Sc, s	√
	8	Power factor	Power factor: Pfa, Pfb, Pfc, Pf	√
	9	phase position	Voltage/current: ∠Ua, ∠Ub, ∠Uc, ∠Ia, ∠Ib, ∠Ic	√
	10	frequency	System frequency: f	√
Electricity measurement	11	Active power	Split-phase and combined-phase bidirectional active energy	√
	12	Reactive power	Split-phase and combined-phase bidirectional reactive power	√
	13	Apparent electric degree	Split-phase and close-phase are in electric energy.	√
freeze	14	Load record	Record once every 5 minutes for 7 days, and cover it circularly.	○
remote signalling	15	Drive in and out	With open remote communication status.	√
clock	16	clock	Accurate clock with hardware	√
Switch input	17	Switch input	4-way switch active node input	○
communication interface	18	RS485 communication	Standard 1 RS485 communication, supporting MODBUS-RTU protocol; Support online upgrade program through RS485 interface.	√
	19	Carrier communication	Support a single-phase carrier module interface (DL/T645 protocol)	√
	20	Debugging interface	One RS485 interface for product debugging.	○
	21	Bluetooth communication	Bluetooth 4.2 communication, which can be used for data transmission.	○
Current transformer	22	Support external current transformer	Configure 250/5A, 400/5A and 630A/5A transformers.	√
Note: "√" marks this function as standard, and "○" indicates that this function is optional.

4.Product installation and schematic diagram
5.About our service           
*  We could provide 7* 24-hour phone call after-sales service. 
*  We provide a 2-year guarantee time and will change the meter for you within 1 year if there's something wrong with the product. Except for natural disasters or man-made reasons.
*  Recommend the most advanced application technology and management model in the industry to customers, and provide customers with detailed solutions.

6.Package and ship