Siemens MD-P1, Руководство пользователя, Страница: 13 / 76

Introduction
Safety Summary and Specifications
13
Siemens Industry, Inc. 125-201
09/30/2019
MD Power Meter Technical Specifications
Specification Description
Service Types Single Phase, Three Phase-Four Wire (WYE), Three Phase-Three Wire
(Delta)
3 Voltage Channels 80 to 346 Volts AC Line-to-Neutral, 600V Line-to-Line, CAT III
Current Channels (3) 0 to 4,000+ Amps depending on CT. 0.525 Vac maximum
Maximum Current Input 158% of CT rating to maintain accuracy
Measurement Type True RMS using high-speed digital signal processing (DSP)
Line Frequency 50/60 Hz
Meter Power From L1 Phase to L2 Phase. 80 to 346 Vac CAT III 50/60 Hz
90 mA maximum. Non-user replaceable 0.5 Amp internal fuse protection.
Waveform Sampling 12 kHz for voltage or current
Channel Sampling Rate 500 milliseconds
Parameter Update Rate 0.5 seconds
Measurements Volts, Amps, kW, kWh, kVA, kVAR, kVARh, kVAh, Power Factor (PF),
All parameters for each phase and for system total.
Accuracy 0.2% (<0.1% typical) ANSI, C12.20-2010 Class 0.2
Resolution 0.01 Amp, 0.1 Volt, 0.01 watt, 0.01 VAR, 0.01 VA, 0.01 Power Factor
depending on scalar setting
LED Indicators Bi-color LEDs (red and green): 1 LED to indicate communication, 3 LEDs
for correct CT-to-phase installation. One Digital Channel indicator.
Pulse Output
Open Collector, 5 mA maximum current, 30V maximum open voltage,
optically isolated
Communication
Data Format P1 FLN over RS-485 Network
Maximum Distance 1200 meters
Baud Rate 4800 baud (fixed, no adjustment)
Data Bits 8
Parity None
Stop Bit 1
RS 485 Transceiver unit load
size 1/8 Load