Siemens SENTRON PAC4220 - 2.1 Performance Features

Description
2
2.1 Performance features
The P
A
C4220 is a Power Monitoring Device for measuring the basic electrical variables in low-
voltage power distribution. The device is capable of single-phase, two-phase or three-phase
measurement and can be used in 2, 3 or 4-wire TN, TT and IT systems.
The PAC4220 is designed for panel mounting. It is also possible to mount it on a DIN rail
using the DIN rail support brackets available as an option.
Thanks to its large measuring voltage range, the PAC4220 with a wide-voltage power supply
can be connected in any low-voltage system up to a rated line voltage of 690V (max. 600V
for UL). Higher voltages can be measured using voltage transformers.
Either x/1A or x/5A current transformers can be used for measuring current.
The large graphical color display is used to read o󹪜 all the measured values and to con󹪝gure
the device.
The integral Ethernet interface or the interface of an expansion module available as an
option can be used for communication, e.g. SENTRON PACRS485 expansion module or
SENTRON PACPROFIBUSDP expansion module or PAC SWITCHED ETHERNET PROFINET
module. The functions of the device can be expanded using other expansion modules
available as options. The PAC4220 has 2 interfaces which can accommodate up to 2 external
expansion modules simultaneously.
Measurement
• Measurement in 2, 3 and 4-wire systems Suitable for TN, TT and IT systems
• Measurement of all relevant electrical variables in a 50/60 Hz AC system
• Measurement of minimum and maximum values of all measured variables
1)
• Calculation of genuine rms values for voltage and current to the 64thharmonic
• 4-quadrant measurement (import and export)
• Averaging of all measured values directly on the device in 2 stages, which are independent
of each other and freely con󹪝gurable (aggregation)
1)
• Measurement of 1st to 63rdharmonics for voltage and current
• Calculation of the average voltage and current values over all phases
• Zero blind measurement
• High measuring accuracy: for instance, accuracy class 0.2 in accordance with IEC 61557-12
for active energy This means: an accuracy of 0.2% relative to the measured value under
reference conditions
• Measurement of N (neutral) conductor current
2)
PAC4220
Equipment Manual, L1V30827278B-01 15