ST470 multi-function instrument
The instr
ST470, ST490 series three-phase full power measurement multi-function table, using high-resolution color LCD display, set measurement, analysis, monitoring and other functions in one. The instrument comes standard with 1 channel of RS485 communication (Modbus-RTU protocol), and can be equipped with 2/4/6 channel of passive switch input, 2/4 channel of relay output, 1 channel of analog output, harmonic function, etc. Users can flexibly select and match according to project requirements.
The instrument has comprehensive functions, easy installation and high cost performance. Widely used in power generation, petroleum, petrochemical, metallurgy, coal, paper, rail transit and building construction and other places.
Function List
|
Function |
ST470-AI3 |
ST470-AV3 |
ST470 |
ST490 |
|
|
measurement |
three-phase voltage |
√ |
√ |
√ |
|
|
three-phase current |
√ |
√ |
√ |
||
|
Three-phase average voltage |
√ |
||||
|
Three-phase average current |
√ |
||||
|
Three-phase active power |
√ |
√ |
|||
|
Total active power |
√ |
√ |
|||
|
three-phase reactive power |
√ |
√ |
|||
|
Total reactive power |
√ |
√ |
|||
|
three-phase power factor |
√ |
√ |
|||
|
total power factor |
√ |
√ |
|||
|
frequency |
√ |
√ |
|||
|
phase angle |
√ |
√ |
|||
|
Positive active energy |
√ |
√ |
|||
|
Reverse active energy |
√ |
√ |
|||
|
Positive reactive energy |
√ |
√ |
|||
|
Reverse reactive energy |
√ |
√ |
|||
|
apparent electrical energy |
√ |
√ |
|||
|
voltage total harmonic |
|
|
|||
|
current total harmonic |
|
|
|||
|
voltage 2~31 harmonic |
|
|
|||
|
current 2~31 harmonic |
|
|
|||
|
input output |
switching value input |
2 way (2DI) 4-way (4DI) |
4-way (4DI) 6 Road (6DI) |
||
|
switching value output |
2-way (2DO) |
2-way (2DO) 4-way (4DO) |
|||
|
analog output |
1 (M) |
1 (M) |
|||
|
pulse output |
& radic;1 |
||||
|
clock |
clock |
√ |
|||
|
Event Logging |
Overvoltage Protection |
√ |
|||
|
Overcurrent Protection |
√ |
||||
|
phase loss protection |
√ |
||||
|
DI linkage |
√ |
||||
|
Communications |
RS485 interface Modbus-RTU Protocol |
& radic;(1) |
& radic;(1) |
& radic;(1) |
& radic;(1) 1 (C2) |
|
Display |
color screen |
2.2 inches |
2.2 inches |
2.2 inches |
3.5 inches |
Note: "& radic;" indicates standard features,""indicates the optional function, and blank indicates no such function.
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