Question 1

What is the rated voltage of the Norax 3 electricity meter?

Accepted Answer

The rated voltage (Un) of the Norax 3 is 3x230/400V, making it suitable for standard three-phase networks. The operating frequency is 50 Hz. (Page 2)

Question 2

What type of network is the Norax 3 electricity meter designed for?

Accepted Answer

The Norax 3 is a multipurpose electricity meter designed for three-phase, 3- or 4-wire networks. It enables direct measurement of active and reactive power and is intended for municipal customers of all tariff groups. (Page 1)

Question 3

What types of energy metering does the Norax 3 support?

Accepted Answer

The Norax 3 supports bidirectional measurement of active power as well as four-quadrant measurement of reactive power. The metering types supported are A+, A-, and |A|. (Pages 1–2)

Question 4

Can the firmware on the Norax 3 meter be upgraded?

Accepted Answer

Yes, the Norax 3 supports firmware upgrades in accordance with WELMEC 7.2. This allows the meter to be updated while maintaining compliance with relevant standards. (Page 1)

Question 5

What is the impulse frequency of the Norax 3 meter?

Accepted Answer

The impulse frequency of the Norax 3 is 5000 impulses per kWh. The power consumption in the voltage circuit is less than 1W and less than 1.5VA. (Page 2)

Question 6

What is the rated voltage and maximum current for the Norax 3 meter?

Accepted Answer

The Norax 3 has a rated voltage of 3x230/400V and a reference current of 5A. The maximum current (Imax) can be configured as 60A, 80A, or 100A depending on your requirements. (Page 2)

Question 7

What communication options does the Norax 3 meter support?

Accepted Answer

The Norax 3 supports multiple communication methods including an optical port, an optional serial port RS-485, and optional Wireless M-Bus at 868 MHz (EN 13757). It also uses the DLMS/COSEM communication protocol. (Page 1-2)

Question 8

What is the measurement accuracy of the meter?

Accepted Answer

The Norax 3 has measurement accuracy class B for active energy according to EN 50470-3, and accuracy class 2 for reactive energy according to EN 62053-23. (Page 2)

Question 9

What type of display does the Norax 3 have?

Accepted Answer

The Norax 3 is equipped with a dedicated segment LCD display with a viewing area of 65 x 20 mm. (Page 2)

Question 10

What is the clock accuracy of the Norax 3 meter?

Accepted Answer

The meter has an internal clock with accuracy not lower than 0.5 seconds per 24 hours at 23°C. (Page 2)

Question 11

What power does the voltage circuit consume?

Accepted Answer

The power consumption in the voltage circuit is less than 1W or 1.5VA. (Page 2)

Question 12

What is the impulse frequency of the meter?

Accepted Answer

The impulse frequency of the Norax 3 is 5000 impulses per kilowatt-hour (imp/kWh). (Page 2)

Question 13

What measurement types does the Norax 3 support?

Accepted Answer

The Norax 3 supports metering types A+, A-, and |A| (absolute active energy values). It also enables bidirectional measurement of active power and four-quadrant measurement of reactive power. (Page 1-2)

Question 14

What IP rating and protection class does the Norax 3 housing have?

Accepted Answer

The Norax 3 housing has an IP rating of either IP53 or IP54 and provides protection class II. (Page 2)

Question 15

What is the maximum current the Norax 3 meter can handle?

Accepted Answer

The Norax 3 meter supports a maximum current (Imax) of 60, 80, or 100 amperes depending on the configuration. The reference current (Iref) is 5A, and the rated voltage is 3x230/400V. (Page 2)

Question 16

What communication options are available on the Norax 3 meter?

Accepted Answer

The Norax 3 supports an optical port as standard, with an optional serial port RS-485 and optional Wireless M-Bus 868 MHz (EN 13757). The communication protocol used is DLMS/COSEM. (Page 1)

Question 17

What is the operating temperature range of the Norax 3 meter?

Accepted Answer

The standard operating temperature range is –25 to +55°C. An optional extended range of –40 to +70°C is also available. (Page 2)

Question 18

What measurement accuracy class does the Norax 3 meet for active energy?

Accepted Answer

The Norax 3 meets Class B measurement accuracy for active energy according to EN 50470-3. For reactive energy, it meets Class 2 accuracy according to EN 62053-23. (Page 2)

Question 19

Does the Norax 3 meter support bidirectional energy measurement?

Accepted Answer

Yes, the Norax 3 supports bidirectional measurement of active power. It also features four-quadrant measurement of reactive power, making it suitable for installations where energy can flow in both directions. (Page 1)

Question 20

What standards and directives does the Norax 3 meter comply with?

Accepted Answer

The Norax 3 complies with the MID Directive (B+D), EN 50470-1, EN 50470-3, and EN 62053-23. These cover metering instrument directives as well as active and reactive energy measurement standards. (Page 2)

Question 21

What type of display does the Norax 3 meter use?

Accepted Answer

The Norax 3 uses a dedicated segment LCD display with a viewing area of 65 x 20 mm. This display is designed specifically for the meter. (Page 2)

Question 22

What is the internal clock accuracy of the Norax 3 meter?

Accepted Answer

The Norax 3 has an internal clock with an accuracy of not lower than 0.5 seconds per 24 hours at 23°C. This clock supports time-of-use tariff functionality. (Page 2)

Question 23

What is the IP protection rating and protection class of the Norax 3 meter housing?

Accepted Answer

The Norax 3 meter housing is rated IP53 or IP54 and is Class II protection. This provides protection against dust and water ingress as well as double insulation for electrical safety. (Page 2)

Question 24

What is the rated voltage and maximum current capacity of the Norax 3 meter?

Accepted Answer

The Norax 3 has a rated voltage of 3x230/400V and a reference current of 5A. The maximum current (Imax) is available in three options: 60A, 80A, or 100A, depending on the specific model configuration.

Question 25

What communication protocols does the HM8930 7197 Norax 3 support?

Accepted Answer

The Norax 3 supports multiple communication methods including an optical port, serial port RS-485 (optional), and Wireless M-Bus 868 MHz (EN 13757) (optional). The primary communication protocol used is DLMS/COSEM.

Question 26

What is the measurement accuracy of the active and reactive energy?

Accepted Answer

The measurement accuracy of active energy is Class B according to EN 50470-3. The measurement accuracy of reactive energy is Class 2 according to EN 62053-23.

Question 27

What is the clock accuracy of this electricity meter?

Accepted Answer

The Norax 3 has an internal clock with an accuracy not lower than 0.5 seconds per 24 hours at 23°C. This ensures reliable time-based measurements and data logging.

Question 28

What does the meter measure besides active energy?

Accepted Answer

The Norax 3 measures bidirectional active power, four-quadrant reactive power, voltage, current, instantaneous power, and maximum power. It also maintains a load profile for comprehensive energy monitoring.

Question 29

What is the impulse frequency output of the Norax 3?

Accepted Answer

The impulse frequency is 5000 impulses per kilowatt-hour (imp/kWh), providing detailed pulse output for energy measurement verification and integration with external systems.

Question 30

What is the power consumption of the meter's voltage circuit?

Accepted Answer

The power consumption in the voltage circuit is less than 1W with a reactive power consumption of less than 1.5VA, making it very efficient.

Question 31

What is the electric strength rating of this meter?

Accepted Answer

The Norax 3 has an electric strength rating of 4 kV (AC 50 Hz) and 6 kV for impulse testing (1.2/50 μs), ensuring reliable insulation under standard and transient conditions.

Question 32

What housing protection class does the Norax 3 have?

Accepted Answer

The Norax 3 comes with either IP53 or IP54 housing protection, with Class II protection classification. This provides adequate protection against dust and water ingress appropriate for indoor and outdoor installations.

Question 33

What is the IP protection rating and protection class of the Norax 3 meter?

Accepted Answer

The Norax 3 housing is rated at IP53 or IP54 and features Class II electrical protection. It also has built-in resistance to external magnetic fields. (Pages 1–2)

Question 34

What is the operating temperature range for the Norax 3?

Accepted Answer

The standard operating temperature range is –25 to +55°C. An optional extended range of -40 to +70°C is also available depending on the configuration.

Apator HM8930 7197 Norax 3 Electricity Meter

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Apator HM8930 7197 Norax 3 Electricity Meter

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Common Questions

Full Manual

Norax 3

2022.134.En

Norax 3

[V]

[A]

[A]

B

A+, A-, |A|

[W] / [Va]

En 50470-1

En 50470-3

En 62053-23