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Datasheet

PDF

软件

说明

90E22/23/24

90E22/23/24 Complete

(文件大小: 613KB, 57 页数, 修订版 6, 更新时间: 04/2013)

Single-Phase, High-Performance, Wide-Span Energy Metering IC

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The 90E24 is a high-performance energy metering device for single-phase two-wire, single-phase three-wire or anti-tampering active and reactive energy meters. With the measurement function, the 90E24 can also be used in power instruments which need to measure voltage, current, etc.

关键特性

  • Fully compliant with IEC standard IEC62052-11, IEC62053-21 and IEC62053-23
  • Applicable to class 1 or class 2 single-phase watt-hour meter or class 2 single-phase var-hour meter
  • Accuracy of 0.1% for active energy and 0.2% for reactive energy over a dynamic range of 5000:1
  • Temperature coefficient is 15ppm/°C (typical) for on-chip reference voltage
  • Electrical parameters measurement: less than ±0.5% fiducial error for Vrms, Irms, mean active/reactive/apparent power, frequency, power factor and phase angle
  • Dedicated ADC and different gains for L line and N line current sampling circuits
  • Current sampled over shunt resistor or current transformer (CT)
  • Voltage sampled over resistor divider network or potential transformer (PT)
  • Programmable L line and N line metering modes
  • Anti-tampering mode (larger power)
  • L line mode (fixed L line)
  • L+N mode (applicable for single-phase three-wire system)
  • Flexible mode (configure through register)
  • Voltage channel (when gain is '1'): 120µVrms~600mVrms
  • L line current channel (when gain is '24'): 5µVrms~25mVrms
  • N line current channel (when gain is '1'): 120µVrms~600mVrms

关键参数

参数

Meter Type:

Single-Phase

Dynamic Range:

5000:1

Temp Coefficient Type (ppm/degC):

15 (ppm/degC)

Active Meas. Accy (%):

0.1 %

Reactive Meas. Accy (%):

0.2 %

Temp. Range (deg C):

-40 to 85