Product Overview
Technical Summary
| Parameter | Value |
|---|---|
| Product type | Measuring device for power system quality measurement |
| Measured line frequency | 45 Hz to 65 Hz |
| Supply voltage | 18 … 60 V DC |
| Ethernet interfaces | 2 x RJ45; MODBUS TCP |
| Digital inputs and outputs | 2 digital inputs; 2 digital outputs |
| Voltage measurement | 11.5 V to 480 V between (PE)N and L AC; 20 V to 828 V between line conductors AC |
| Current input | 1 A or 5 A AC rated value |
| Display | Color graphics TFT; 54 mm x 72 mm |
| Protection | IP65 front; IP20 terminal |
| Mounting | Vertical panel mounting; DIN-rail mounting No |
| Operating ambient temperature | -25 °C to 55 °C |
Applications
- Electrical variable measurement: Measures voltage, current, active power, reactive power, apparent power, power factor, frequency, energy, THDu, THDi, and harmonics per phase.
- Power quality measurement: Performs power system quality measurement with TRMS voltage and current measurement and complete measured-value detection.
- Digital signal switching and pulse output: Uses 2 digital inputs and 2 digital outputs for switching or pulse output functions; pulse output conforms to IEC62053-31.
Key Features
- 3-phase power measurement: Measures voltage, current, active power, reactive power, apparent power, energy, power factor, frequency, THDu, THDi, and even and odd harmonics per phase up to the 64th.
- Measurement accuracy: Active energy: Class 0.2 according to IEC61557-12 and/or Class 0.2S according to IEC62053-22; reactive energy: Class 0.5 according to IEC61557-12 or IEC62053-23.
- Ethernet communication: Provides 2 Fast Ethernet interfaces with 2x RJ45 connections and supports MODBUS TCP. Transfer rates are 10 Mbit/s and 100 Mbit/s.
- Supply and digital I/O: Uses a DC extra-low-voltage power supply with 18 … 60 V input and 9 VA apparent power consumption. It has 2 passive electronic digital inputs and 2 passive electronic digital outputs with screw-type terminals.
- Display and enclosure protection: Has a color graphics TFT display with 54 mm height and 72 mm width. Front protection is IP65 and terminal protection is IP20.
- Panel installation: Designed for installation in stationary panels in closed rooms, with vertical mounting, 96 x 96 x 56 mm dimensions, and 51 mm installation depth. DIN-rail mounting is not supported.
Frequently Asked Questions
1. What does the Siemens 7KM4220-1BA01-1EA0 measure?
It measures voltage, current, active, reactive and apparent power, active and reactive energy, power factor, frequency, THDu, THDi, and even and odd harmonics per phase up to the 64th.
2. Which communication interface and protocol does it have?
It has 2 Fast Ethernet interfaces with 2x RJ45 connections and supports MODBUS TCP.
3. What supply voltage does this device use?
Its DC extra-low-voltage power supply accepts 18 … 60 V and has 9 VA apparent power consumption.
4. How is the device mounted?
It is designed for vertical installation in stationary panels in closed rooms. DIN-rail mounting is not supported.
