Product Overview
Technical Summary
| Parameter | Value |
|---|---|
| Product type | Measuring device for power system quality measurement |
| Supply voltage | AC/DC; 95 … 250 V AC; 9 VA |
| Measurable line frequency | 45 Hz to 65 Hz |
| Voltage measurement | 11.5 V to 480 V between (PE)N and L AC; 20 V to 828 V between line conductors AC |
| Current measurement | 1 A or 5 A AC rated value |
| Communication | 2 Fast Ethernet interfaces; 2 x RJ45; MODBUS TCP |
| Digital inputs | 2 electronic, passive inputs; maximum 30 V DC input voltage |
| Digital outputs | 2 electronic, passive outputs; switching or pulse output function; maximum 30 V DC |
| Display | Color graphics TFT; 54 mm x 72 mm; 4 keys |
| Protection | IP65 front; IP20 terminal |
| Operating temperature | -25 °C to 55 °C |
Applications
- Power system quality measurement: Measures voltage and current using TRMS and detects complete measured values for power system quality measurement.
- Electrical variable measurement: Measures active power, reactive power, power factor, frequency, apparent energy, active energy and reactive energy.
Key Features
- Electrical measurement: Measures voltage, current, active power, reactive power, power factor, frequency, apparent energy, active energy and reactive energy.
- Harmonic measurement: Measures even and odd harmonics per phase up to the 64th harmonic, with THD measurement.
- Display and controls: Color graphics TFT display with adjustable backlight and contrast, plus 4 keys.
- Ethernet communication: 2 Fast Ethernet interfaces with 2 x RJ45 connections and MODBUS TCP support; transfer rates are 10 Mbit/s and 100 Mbit/s.
- Digital I/O: Has 2 electronic passive digital inputs and 2 electronic passive digital outputs with screw-type terminals.
- Panel installation: 96 x 96 mm Power Monitoring Device for vertical installation in stationary panels in closed rooms; front protection is IP65.
Frequently Asked Questions
1. What does the Siemens 7KM4220-0BA01-1EA0 measure?
It measures voltage, current, active power, reactive power, power factor, frequency, apparent energy, active energy, reactive energy and harmonics per phase up to the 64th harmonic.
2. What communication interface and protocol does it have?
It has 2 Fast Ethernet interfaces with 2 x RJ45 connections and supports MODBUS TCP. Ethernet transfer rates are 10 Mbit/s and 100 Mbit/s.
3. How many digital inputs and outputs are available?
It has 2 electronic passive digital inputs and 2 electronic passive digital outputs. Both use screw-type terminals.
4. What are the supply voltage and rated measuring values?
The wide-range AC/DC power supply is 95 … 250 V AC with 9 VA apparent power consumption. The AC current rated value is 1 A or 5 A, and the line frequency range is 45 Hz to 65 Hz.
