EasyManuals Logo

ABB REF 542plus Technical Reference Manual

ABB REF 542plus
72 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
To Previous Page IconTo Previous Page
To Previous Page IconTo Previous Page
Page #37 background imageLoading...
Page #37 background image
37
6. Technical data
6.1. Analog inputs
6.1.1. Measurements
The REF 542plus unit uses the same analog inputs both for measurements and
protections.
Table 6.1.1.-1 Measurements
Quantity Class Range
Phase current, earth current 0.5 0.1-4I
n
Line voltage, phase voltage 0.5 0.2-1.5V
n
Active, reactive energy 2 -
Active, reactive, apparent power 1 -
Cosφ 1 1-+1
Frequency 0.02 40-75 Hz
To achieve highest accuracy the instrument transformers or the sensors must have
0.5 percent accuracy or better in the same range.
6.1.2. Protection
Table 6.1.2.-1 Protection functions and operation time
Protection functions Class 3
Operation time Class 3 or minimum ±15 ms
Table 6.1.2.-2 Current and voltage transformer input values
Rated current l
n
0.2 A or 1A or 5 A
Rated voltage U
n
100 V - 125 V
Rated frequency f
n
50 Hz or 60 Hz
Table 6.1.2.-3 Thermal load capacity
Current path 250 I
n
(peak value), dynamic 100 I
n
for 1s,
4I
n
continuous
Voltage path 2 U
n
/3 continuous
Table 6.1.2.-4 Consumption
Current path 0.1 VA with I
n
Voltage path 0.25 VA with U
n
Multifunction Protection and Switchbay Control
Unit
Technical Reference Manual
REF 542plusREF 542plus
1MRS755859

Other manuals for ABB REF 542plus

Questions and Answers:

Question and Answer IconNeed help?

Do you have a question about the ABB REF 542plus and is the answer not in the manual?

ABB REF 542plus Specifications

General IconGeneral
BrandABB
ModelREF 542plus
CategoryControl Unit
LanguageEnglish

Related product manuals