CIRCUTOR CIRWATT-B410T Series - Manual (Page 11)

THREE PHASE STANDARD CIRWATT B METER
CIRWATT B THREE PHASE INSTRUCTION MANUAL 11 / 53
1.6.5.- Wire cover (depending on version)
The meters feature an opaque cover over the upper part of the terminal box, the fixing screws
and the connection conductors.
The bottom part of the cover is designed in such a way that it can be easily broken to allow the
wires to be partially exposed whilst protecting access to the terminals.
The meter is fitted with a sensor that can detect the opening and closing of the wire cover. This
detection always takes place, even if the meter is not connected to the electrical supply.
On the wire cover, the meter is fitted with a DB9 connector for a local connection using an
electrical serial port.
1.6.6.- Terminal cover (depending on version)
The meters feature an opaque cover over the upper part of the terminal box and the fixing
screws. The meter is fitted with a sensor that can detect the opening and closing of the
terminal cover. This detection always takes place, even if the meter is not connected to the
electrical supply.
1.6.7.- Terminal box
Screws
The screws are of mixed type, allowing the use of both Phillips and flat screwdrivers. A double
screw fixing is used, with the screws being designed to reduce the stripping caused by the
numerous operations of tightening and loosening that can take place over the course of the
lifetime of the meter
Terminals
All the terminals are indelibly numbered on the front, from left to right, with the function of the
meter being indicated on the characteristics label situated on the meter's casing.
Auxiliary terminals
These are situated a level above the main terminals, and they are numbered from left to right,
starting at 21.