西門子7KG9661-1FA30-1AA0數(shù)字測量變送器

數(shù)字測量設備 變送器 SICAM T， 不帶顯示器的凹頂導軌裝置， 外殼 96mm x 96mm x 100mm， IP20，2 個二進制輸出端， 以太網(wǎng)接口，帶 Modbus TCP， 歐姆分壓器， 4 個模擬輸出端， 串行接口/通信協(xié)議 RS485/IEC60870-5-103/Modbus RTU。

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上海斌勤電氣技術(shù)有限公司

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應用

Conversion and integration of measurands into substation automation, protection or SCADA process via RTU and/or via protocols IEC 61850 (for 7KG9662 variant), MODBUS TCP, IEC 60870-5-103 for further control and/or monitoring tasks

Monitoring of lower voltage levels and heavy load control, e.g. air conditioning and motors

Depending on the device type, the input circuits for voltage measurement are either designed as voltage dividers or they are galvanically isolated. Devices with galvanic isolation can be used without voltage transformers in the power systems IT, TT and TN. Devices with a voltage divider can also be used in these power systems; for IT power systems, however, an upstream voltage transformer is required.

功能

Device type

Top-hat rail mounted device

Plastic case 96 mm × 96 mm × 100 mm / 3.78 in. x 3.78 in. x 3.94 in. (W × H × D)

Degree of protection: IP20

Input and output circuits

4 inputs for alternating voltage measurements

3 inputs for alternating current measurements up to 10 A continuous

4 optional DC analog outputs freely configurable:

Direct currents: 0 mA to 20 mA, 4 mA to 20 mA and -20 mA to 20 mA

Direct voltages: 0 V to 10 V and -10 V to 10 V

Individually programmable binary outputs

Signalization LEDs

Automatically monitor the functions of its hardware, software, and firmware components.

Communication

Ethernet: IEC 61850 or MODBUS TCP communication protocol

Optional serial RS485 interface that enables the device to communicate via the MODBUS RTU or the IEC 60870-5-103 communication protocol.

Measurands

The following measurands can be recorded or calculated from the measured quantities:

TRMS (True RMS) for alternating voltage and current

Active, reactive and apparent power

Active, reactive and apparent energy

Power frequency

Phase angle

Power factor and active power factor

Voltage and current unbalance

Mean value of the 3 phase voltages: Vavg

Mean value of the 3 phase currents: Iavg..

Time synchronization

For a common time basis when communicating with peripheral devices and time stamping of the process data.

External time synchronization via Ethernet NTP

External time synchronization via field bus using the MODBUS RTU or the IEC 60870-5-103 communication protocol

Internal time synchronization via RTC (if external time synchronization is not available).

Response time for analog and binary outputs

The faster response time of the analog and binary output is a very important feature of SICAM T that enables a reliable reaction of the controlling applications. The response time of the device is 120 ms at 50 Hz and 100 ms at 60 Hz.