Audited Supplier
LINK1000
Two Years
Two Years
Digital
Direct Connected
Multi-Functional Energy Meter
Three-phase Four-wire
Electronic Meter
Feed-through Type
Energy Meter
ISO
Customized
Linkelec
Carton
Made in China
90283012
Product Description
Low voltage cable branch box monitoring unit
1.Product profile
The low-voltage cable branch box monitoring unit is 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. This unit can measure multiple grid parameters such as voltage, current, power, residual current, temperature, etc; Capable of analyzing 2-63rd harmonics and calculating multiple power quality parameters; Measurable fundamental and full wave active and reactive electrical energy; Configurable independent RS485 communication interface, supporting carrier and 4G dual-mode communication, supporting DL/T645-2007 communication protocol; It has switch input and relay output functions, and has a reliable anti misoperation design. It can achieve the monitoring of the operation status of 5 incoming and outgoing branches (1 in and 4 out) in the branch box, as well as the indication of fault status.
4.Product installation and schematic diagramThe low-voltage cable branch box monitoring unit is 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. This unit can measure multiple grid parameters such as voltage, current, power, residual current, temperature, etc; Capable of analyzing 2-63rd harmonics and calculating multiple power quality parameters; Measurable fundamental and full wave active and reactive electrical energy; Configurable independent RS485 communication interface, supporting carrier and 4G dual-mode communication, supporting DL/T645-2007 communication protocol; It has switch input and relay output functions, and has a reliable anti misoperation design. It can achieve the monitoring of the operation status of 5 incoming and outgoing branches (1 in and 4 out) in the branch box, as well as the indication of fault status.
2.Technical indicators‘
3.Selection specifications| 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 | ||
| display mode | OLED LCD screen | |
| 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 | Rated current 100mA incoming AC 600A/100mA. |
| Branch AC 400A/100mA | ||
| frequency range | 45~65HZ | |
| measuring range | Incoming wires 20A~720A | |
| Branches 20A~480A | ||
| working power supply | rated voltage | AC 220V (allowable deviation -20%~+20%) |
| Power consumption | Not more than 3W | |
| Switch input | Input form | Dry node (internal DC24V) |
| Switch output | output form | Mechanical contact |
| contact rating | AC250V/1A | |
| communication interface | Interface form | RS485, carrier module |
| protocol | ModbusRTU,DLT/645 | |
| 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. |
| functional module | S/N | Function point | Function Point Description | Low voltage cable branch box monitoring unit |
| 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 | √ | |
| 6 | Active power | Active power: Pa, Pb, Pc, P | √ | |
| 7 | Reactive power | Reactive power: Qa, Qb, Qc, Q | √ | |
| 8 | Apparent power | Apparent power: Sa, Sb, Sc, S | √ | |
| 9 | power factor | Power factor: Pfa, Pfb, Pfc, Pf | √ | |
| 10 | phase | Voltage/current: ∠ Ua, ∠ Ub, ∠ Uc, ∠ Ia, ∠ Ib, ∠ Ic | √ | |
| 11 | frequency | System frequency: F | √ | |
| Electricity metering | 12 | Active kilowatt hour | Bi directional active electric energy of phase separation and phase combination | √ |
| 13 | Reactive kilowatt hour | Two way reactive electric energy of phase separation and phase combination | √ | |
| 14 | Apparent electric degree | Apparent electric energy of phase separation and phase combination | √ | |
| frozen | 15 | Load record | Record once every 5 minutes for 7 days, with cyclic coverage | ○ |
| Power quality | 16 | Harmonic content | Harmonic content of three-phase voltage and current for 2~31 times | √ |
| 17 | Harmonic distortion rate | Total, odd and even harmonic distortion rate | √ | |
| 18 | out-off-balance | Voltage and current imbalance | √ | |
| exceed the time limit | 19 | Over limit alarm | Level 8 out of limit alarm function, which can monitor power parameters and remote signals, generate alarm when conditions are met, and can be linked with the output for alarm exit linkage | √ |
| Event record | 20 | SOE record | It has 64 SOE recording functions, including switch displacement, remote control, out of limit alarm, etc., with time mark recording | √ |
| 21 | Record of maximum value | The maximum and minimum values of relevant parameters (phase/line voltage, current, active power, reactive power, apparent power, power factor, frequency, demand) can be counted in real time and recorded with time scale | √ | |
| Clock | 22 | Clock | With hardware accurate clock | √ |
| I/O | 23 | Switch input | 4-way switching value active node input | ○ |
| 24 | Switching value output | 2-way passive switching value output, support level/pulse type, support remote control or serve as local threshold crossing alarm outlet | ○ | |
| communication interface | 25 | RS485 communication | Standard configuration: 1-way RS485 communication, supporting MODBUS-RTU protocol; Support online upgrade program through RS485 interface | √ |
| 26 | Carrier communication | Support one channel single-phase carrier module interface (645 protocol) | √ | |
| Current transformer | 27 | External current transformer | Incoming line is configured with 600A~100mA transformer | √ |
| The branch is configured with 400A~100mA transformer | ||||
| Note: "√" mark is equipped with this function as standard, and "○" means this function is optional | ||||
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
