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Model and name

Accuracy (level)

Reference voltage (V)

Calibration current (A)

Wiring

Configuration

Packing size (mm)

Quantity (only)

DTSY309 three-phase four-wire
Electronic pre - paid energy meter
(LCD)

1.0

2.0

3×220/380

1.5(6)

Mutual inductance

External relay

490×352×269

10

5(20)，10(40)，15(60)

Direct type

Built-in relay

20(80)，30(100)

DTSY309 three-phase four-wire electronic prepaid watt-hour meter
(With RS485 interface)

1.5(6)

Mutual inductance

External relay

5(20)，10(40)，15(60)

Direct type

Built-in relay

20(80)，30(100)

DTSY309-G three-phase four-wire electronic pre-paid utility meter

1.0

2.0

3×380

3×220/380

1.5(6)

Mutual inductance

External relay

5(20)，10(40)，

Direct type

Built-in relay

15(60)20(80)，30(100)

DTSY309-D three-phase four-wire electronic prepaid energy meter (rail)

1.0

2.0

3×220/380

1.5(6)

Mutual inductance

External relay

430×230×345

20

5(20)，10(40)，

Direct type

Built-in relay

15(60)20(80)，30(100)