ST490 multi-function instrument fire monitoring

ST490F-1
ST490F-3
ST490F-4
ST490F-2
넳 넲
ST490 series is a three-phase full-power measurement multi-function meter with advanced high-resolution TFT color LCD display. Widely used in petroleum, petrochemical, chemical, metallurgy, rail transportation and other industries,. It can be used as a multi-function measurement and control meter for full power measurement, which can replace a large number of conventional analog instruments.

ST490 series is a three-phase full-power measurement multi-function meter with advanced high-resolution TFT color LCD display. Widely used in petroleum, petrochemical, chemical, metallurgy, rail transportation and other industries,. It can be used as a multi-function measurement and control meter for full power measurement, which can replace a large number of conventional analog instruments.

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.

Product Details

ꄴThe previous one： 无
ꄲThe latter one： ST470 multi-function instrument

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