10
CIRWATT B 101-102
Instruction Manual
2�5�3 - VOLTAGE BRIDGES
The bridge separates the voltage and current circuits internally, making it impossible to manipulate
them externally.
2�5�4 - SEALS
The cover and base socket of the meter are closed, making it impossible to open them or insert foreign
objects without breaking the enclosure. In addition, the energy meter has a series of mechanical fixing
elements that prevent the enclosure from being opened. It also has regulatory seals, both on the
energy meter cover and on the sealable keypad and the terminal cover.
2�5�5 - WIRE COVER
The energy meter has an opaque cover over the top of the terminal box, the screws and the connection
conductors. The dimensions of the terminal cover meet the requirements for single-phase energy
meters, in compliance with the DIN 43857 standard.
The bottom part is made for easy breakage and to partially let the wires out, protecting access to the
terminals.
The energy meter has a sensor that detects the opening and closing of the terminal cover. This detection
is always made, even if the energy meter has no power supply.
2�5�6 - TERMINAL BOX
Screws
The screws are mixed, allowing the use of PZ2 (Pozi drive no. 2) and flat head screwdrivers. The
fastening is done with two screws, which are designed not to strip during the various tightening and
loosening operations that can take place over the life of the meter.
Terminals
All the terminals are indelibly numbered on the front, from left to right, indicating the purpose of the
conductor according to the
Table 5: Terminals�
Terminals
1
Phase conductor input.
3
Phase conductor output to user.
4
Neutral conductor input.
6
Neutral conductor output to user.
Auxiliary terminals
These terminals are located above the main terminals. These terminals offer different configurations,
depending on the energy meter model. The available options are described below:
S0 Impulse output (terminals 23-24):
this output emits an impulse train that is proportional to the
consumption measured by the energy meter. These impulses comply with the IEC 62053-31 Standard.
Relay output (terminals 23-24):
this output is used to check the moment when the tariff is modified.
This relay is closed to connect or disconnect charges, in accordance with the tariff.
