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Optimizing power facilities in low-lying areas
Customers’ Flood Control Measures
To enhance the reliability and stability of the power transmission and distribution system, CEM regularly maintains and repairs the power supply system, including substations, medium-voltage network, low-voltage network, and the parts that connect to the handover points at customer premises or offices/factories, such as the public power distribution networks and associated power supply facilities. CEM also examines the customers’ building communal electrical installations at any time when necessary.
Substation
Customer substation
Power transmission and distribution network
Meter and circuit breaker (no higher than 34.5kVA)
Substation
Customer substation
Power transmission and distribution network
Meter and circuit breaker (no higher than 34.5kVA)
The Revision of “Technical specifications for new building’s electrical installations in low-lying area”
In order to enhance the disaster prevention and resilience of new buildings in low-lying areas, CEM completed the revision of “Technical specifications for new building’s electrical installations in low-lying area” in September 2018 after communicating and coordinating with relevant departments. Electrical installations in new buildings, including transformers, main switchboards and meter boxes, etc., must be installed above the flood protection level set by Macau SAR Government in order to minimize the impact of flooding on such installations. In addition, CEM plans to relocate some of the customer substations at Porto Interior to higher locations. Apart from solving the flooding issues in the long run, it can also improve power capacity for the old districts.
Customers’ Responsibility
Regarding the existing buildings, customers’ communal electrical installations (as shown below) in buildings are jointly owned by the property owners and are generally installed on the ground floor at the building entrance. If customers do not raise such electrical installations accordingly, the power supply will still be affected by floods.
To reduce the impact of flooding in the long run and achieve the best flood control effect, apart from enhancing and raising CEM’s power facilities, property owners can also hire experienced electrical contractors to raise up the communal electrical installations in buildings in accordance with the above-mentioned “Technical specifications for new building’s electrical installations in low-lying area”. This will improve the overall disaster prevention capability and resilience.
Main Low Voltage Switchboard
Distribution Circuit Breaker
Collective Line Distribution Board
Building Main LV Circuit Breaker
Meter Board
How to raise electrical installations in your building?
Citizens or building owners who intend to raise their building’s power supply equipment, such as raising electrical installations at the ground floor to a higher position, will be determined according to the actual situation. Customers can hire an experienced electrical contractor and submit the related project application to CEM. We will assess and provide technical support for the design and installation of the related projects. Customers can submit the application by sending email to customer.centre@cem-macau.com. For inquiries about disaster prevention related to electricity, please call: 2833 9911 If you need to find an electrical contractor, please contact the electrical technician in the “Electrical Contractor List” to consult and learn about project details and related services provided by them. |
Generally speaking, the scope of work regarding raising meters and communal electrical installations above the flood protection level includes the following:
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