Split Monitoring Unit - Host Module

Product Description

Split monitoring unit - host module 1.Product profile
The branch monitoring unit consists of a host module and a slave module. A new type of power monitoring and control unit that integrates measurement recording, energy metering, remote signaling and control, alarm output, and network communication functions. It has high-precision measurement and metering functions, and can measure multiple power grid parameters such as voltage, current, and power; Capable of analyzing 2-63rd harmonics and calculating multiple power quality parameters; Capable of generating electricity and meeting demand; The host module communicates with higher-level gateway devices (such as intelligent fusion terminals) through HPLC communication, supporting DL/T645-2007 and DL/T698 dual communication protocols. The host module communicates with the slave module through RS485 bus. A host module can connect up to 8 slave modules for communication, enabling measurement and control of multiple three-phase circuits. It also establishes connections and communication with higher-level gateway devices through HPLC communication of the branch monitoring unit host module. The product is suitable for expanding the control circuit of specialized transformer acquisition terminals, achieving round control and precise control of power side loads; The switch input and relay output functions have reliable anti misoperation design. 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/T645-2007,DL/T698.45
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	Host module
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: The "√" sign comes standard with this function, 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