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Instruction Manual
CIRWATT B 400
2�7 - VERIFICATION PULSES
The device has two verification LEDs, one for verifying the active energy and another for the reactive
energy.
The weight of the LEDS depends on the version of the meter, and is 20,000 imp/kWh (kVArh) for an
indirect and semi-indirect meter, and 4,000 imp/kWh (kVArh) for a meter with a direct connection.
The LEDs remain on when the current is lower than the meter's starting current. Once the starting
current is exceeded (due to the presence of either active or reactive power consumption), the LEDs
turn off and emit pulses proportional to the energy measured, as per the rate indicated on the rating
label.
Both LEDs have metal rings and a profile to set and help position the verification head.
2�8 - BUTTON
It relies on two keys with a short and long press system. A short press is one lasting less than 2 seconds,
and a long press is one lasting more than 2 seconds. The effect of pressing each key depends on the
version of the meter. One of the keys is sealed to prevent unauthorised personnel from operating the
meter.
2�9 - RATING PLATE
The rating plate is located on the front of the meter and contains the specifications required in IEC
62052-11:
Manufacturer's identification mark and place of manufacture
Type designation and certification markings.
The number of phases and the number of conductors in the circuit to which it can be connected
(e.g., three-phase 4 wires)
Serial number of the meter (9 numeric characters), unique number for each meter.
Year of manufacture, year in which the meter was manufactured.
Reference voltage, in the form of the rated voltage of the mains or the secondary voltage of the
measuring transformer to which the meter is to be connected.
Reference current and maximum current, for example 10(100) A would be a meter with a base
current of 10 A and a maximum current of 100 A.
Reference frequency in Hz.
The meter constant is the pulse ratio of the active/reactive energy and defines the flashing
frequency of the LED.
Meter class index
The double square symbol
, since the meter has a class-II protective insulating enclosure.
Designation of the number and the arrangement of the measuring elements.
Bar code as per EN 207010 identifying the meter.
Model identifier. Manufacturer's code used to identify the meter model. This code yields its
