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8/28 ELECTRICAL INSTALL ATION SOLUTIONS FOR BUILDINGS 2CHC 420 001 C0201

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Energy efficiency
EQ meters B series

The EQ meters, B series is a range of meters for single phase and three phase metering.
The B series meters are mounted on a DIN rail and are suitable for installation in distribution
boards and small enclosures such as consumer units. The B series are suitable in
applications where there is a need for reliable energy measurements and where space
is limited.

The low rated or base currents of these products ensures high dynamic performance with
superior accuracy even at low currents. The B series meters are meters for many
applications and installations. Navigating the meter is easily done via the push-buttons be-
low the display. To configure the meter settings, the set button must be accessed and this
button is protected against unauthorized use when the “glass lid” on the front of the meter
is closed and sealed. The exceptional low power consumption of the meters, less than 0.9 VA
and 1.6 VA, makes them economical in the long run - an important feature specially for large
8
meter populations.
Data from the B series meters can be collected via pulse output or serial communication. The
pulse output is a solid state relay that generates pulses proportionally to the measured en-
ergy. The meters can also be equipped with built-in serial communication interfaces for M-
Bus or Modbus RTU (RS-485). Meters with RS-485 interface can also be set to
communicate over the new EQ bus with the new gateway G13. All meters in the B series come
with an infrared port for communication with an external Serial Communication
Adapter (SCA) such as the KNX adapter.

The B series meters support reading of instrument values. A large number of electrical
properties can be read. Depending on version of the meter the following data is available:
• Active power
• Apparent power
• Reactive power
• Current
• Voltage
• Frequency
• Power factor

Up to 4 tariffs are controlled via inputs or communication.

The B series support two inputs and two outputs in a fixed configuration. Inputs can be used
for counting pulses from e.g. a water meter, or reading status from external devices. Out-
puts can be used as pulse outputs or controlling external apparatus like a contactor or an
alarm (connected via an external relay).

The B series meters are type approved according to IEC and they are both type approved and
verified according to MID. MID is the Measuring Instruments Directive 2014/32/EU from the
European Commission. MID type approval and verification is mandatory for meters in billing
applications within EU and EEA. The type approval is according to standards that covers all
relevant technical aspects of the meter. These include climate conditions, electromagnetic
compatibility (EMC), electrical requirements, mechanical requirements and accuracy.