T
able of Contents
I
Not included in the supply .......................................................................................................4
Table of Contents ....................................................................................................................................5
Reference number index .......................................................................................................................9
ABB B21 1PH energy meter .................................................................................................13
Scope and target audience ..................................................................................................................14
Symbols and signs ...............................................................................................................................15
Intended or allowed use ........................................................................................................17
Limits in field of use ...............................................................................................................17
C
haracteristics ................................................................................................................................. 18
General conditions ...............................................................................................................................18
Tightening torques ................................................................................................................24
Overall dimensions ...............................................................................................................24
Bracket dimensions ...............................................................................................................25
Efficiency curves ..................................................................................................................................26
Strings and Arrays .................................................................................................................29
Description of the equipment ..............................................................................................................30
Operating diagram ................................................................................................................30
Operating diagram ................................................................................................................................32
Safety devices .......................................................................................................................................38
Anti-Islanding ........................................................................................................................38
Other safety devices .............................................................................................................38
1- Introduction and general information
- 5 -