Shanghai Henghan Electric Co., Ltd
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2p rail type single-phase electricity meter
1、 Overview DDS17912P single-phase rail mounted energy meter adopts the single-phase energy metering chip ADE7755 from American ADI company and advanc
Product details

1、 Overview

DDS1791 2P single-phase rail mounted electric energy meterA new type of instrument designed and manufactured based on the actual electricity consumption of users, using the single-phase energy metering chip ADE7755 from ADI in the United States and advanced SMT and wave soldering processes. All technical indicators of this instrument comply with the requirements of GB/T17215.321-2008 Static AC Active Energy Meter and IEC62053-21 international standard.

2、 Specifications and main technical parameters

1. Model specifications

Model number

Accuracy

etc. level

Reference voltage

Un

Rated current

Ib

Instrument constant

imp/kWh

Display mode

DDS1791

Level 1

Or Level 2

220VAC

50Hz/60Hz

2.5(10)A

6400

LCD display

Or measuring device

display

5(20)A

3200

10(40)A

1600

20(80)A

800

2. Basic error limit

load current

Power factor COS φ

Basic error limit (%)

1level

Level 2

0.05Ib

1.0

±1.5

±2.5

0.1Ib-Imax

1.0

±1.0

±2.0

0.1Ib

0.5 (Sensory)

0.8 (capacitive)

±1.5

±2.5

0.2Ib-Imax

0.5 (Sensory)

0.8 (capacitive)

±1.0

±2.0

Note: Ib calibration current, Imax maximum current.

3. Start up

Under the conditions of reference voltage, reference frequency, and COS φ=1.0, the instrument should be able to continuously measure electricity with a load current of 0.004Ib (level 1) or 0.005Ib (level 2).

4. Stealth

When the voltage circuit is applied with 115% of the rated voltage and there is no current in the current circuit, the test output of the instrument should not generate more than one pulse within the specified time.

5. Voltage range

Normal operating voltage: 0.9Un-1.1Un

Maximum operating voltage: 0-1.15Un

6. Power consumption

Voltage line ≤ 2W and 10VA

Current line ≤ 0.6VA

7. Climatic conditions

Normal operating temperature: -10 ℃+45 ℃

Extreme working temperature: -25 ℃+55 ℃

Storage and transportation temperature: -25 ℃+70 ℃

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Successful operation!

Successful operation!

Successful operation!