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Simple energy monitoring solutions
Metering & Monitoring



EC051, EC154M & EC350
Kilowatt hours meters measure the active energy used in an electric installation.

The range includes meters with pulsed output for remote indication or linking into an energy management system.

Kwh meters can be used for local metering of the installation or monitoring of power consumption of individual equipment.

Single phase direct measure

Part References
EC050
EC051
EC150
EC152
EC154M
Accuracy acc IEC1036
Class 1 (1%) 0.02 to 32A~
Class 1 (1%) 0.02 to 32A~
1% Class B according to EN 50470-3
1% Class B according to EN 50470-3
1% Class B according to EN 50470-3
I max
32A ~ direct
32A ~ direct
63A ~ direct
63A ~ direct
63A ~ direct
Supply
Single phase 230V ~ 50Hz
Single phase 230V ~ 50Hz
Single phase 230V~ ±
15% 50/60Hz
Single phase 230V~ ±
15% 50/60Hz
Single phase 230V~ ±
15% 50/60Hz
Counter
Total without reset
Total without reset
Total + partial with reset
Total + partial with reset
Total + partial with reset
Width 17.5mm
1 modules
1 modules
3 modules
3 modules
3 modules
Approvals
MID approved
MID approved
MID approved
MID approved
MID approved
 Three phase direct measure
Part References
EC350
Accuracy acc IEC1036
1% Class B according to EN 50470-3
I max
63A ~ direct
Supply
Three phase 230V~ ± 15% 50/60Hz 400V~ ± 15% 50/60Hz
Counter
Total + partial with reset
Width 17.5mm
4 modules

Why install energy monitoring meters?

Government legislation

The Building Regulations stipulate the energy performance of the buildings in order to reduce carbon dioxide emissions. Part L: of the building regulations for England and Wales cover energy efficiency requirements.

Effective management: systems should be provided with appropriate energy meters to monitor the energy consumption of the building.

Section 4.38 of the Building regulations Part L states: Reasonable provision for energy meters would be install energy metering systems that enable -
a. at least 90% of the estimated annual energy consumption of each fuel to be assigned to the various end-use categories (heating, lighting etc.). Detailed guidance on how this can be achieved is given in CIBSE TM 39; and

b. the output of any renewable energy system to be separately monitored; and

c. in buildings with a total useful floor area greater than 1000m2, automatic meter reading and data collection facilities.

Scottish Building Regulations: section 6.10 states that every building must be designed and constructed in such a way that each building or part of a building designed for different occupation is fitted with fuel and power meters.

The CIBSE Guide TM39: 2009, offers guidance on the Building Energy Metering.

HM Government issued the Non-domestic Building Services Compliance Guide 2010 Edition. This states: Metering of lighting should meet the minimum standards in Table 46.
Table 46: Recommended minimum standards for metering of general and display lighting in new and existing
buildings.
 Standard
Metering for general display lighting
a. kWh meters on dedicated lighting circuits in the electrical distribution; and
b. local power meter coupled to or integrated in the lighting controllers of a lighting or building management system; or
c. a lighting management system that can calculate the consumed energy and make this information available to a building management system or in an exportable file format. (This could involve logging the hours run and the dimming level, and relating this to the installed load.)

Reducing energy consumption

Metering allows Facilities Managers, Energy Managers and Building Owners to understand and manage energy consumption in their buildings, possibly resulting in energy savings by identifying:

  • The breakdown of where the energy is being used.
  • Indicating the usage patterns and allows assessment of target areas that may have unusually high energy use.
  • Providing comparisons between similar buildings.
  • Monitoring energy use trends between days of the week or day and night time. Enabling compliance with the regulations.

Billing

If a means of billing is needed then MID (Measuring Instruments Directive) approved meters will be required. It is a Legal requirement to charge for electricity ONLY with MID approved meters.MID approved meters guarantee higher reliability & accuracy required for billing purposes.For sub billing metering applications please contact our Technical Support Helpline 01952 675689.