The Electrical Engineer - Institute of Integrated Electrical Engineers ...

TECHNICAL PAPER
critical. The proposed layout could be adapted for all
offices of STG Building without paper bills required and
eliminates disagreement between tenant and landlord
due to unexpected increase in energy consumption.
Recommendation
For all commercial office building designed with
individual sub-meters locates and place the
prepayment sub-meter inside each tenant office.
For the landlord, verify regularly the average
rate structure cost of energy from the local power
distributor.
Install a circuit breaker between the existing subfeeder
line and the line side of prepayment sub-meter
for additional protection due to possible short-circuits
or overloading of sub-meter.
For the landlord, provide necessary monitoring chart
reflecting the prepaid KW-HR denominations matrix.
For building owner (landlord), locate the KW-HR
user’s card validation machine at ground floor level
where it is accessible to each tenant.
For possible lost of user’s card, the landlord to
provide extra magnetic strip card for immediately
replacement and validation.
Each prepaid sub-meter has KW-HR indicating
system that provides early signal when validated
denomination is almost exhausted.
32 THE ELECTRICAL ENGINEER MAGAZINE 3RD QUARTER 2010
For building establishment designed with several
consignments like rented stalls, and other
accommodation, assess the type and ratings of load
to be controlled and match the rated specifications of
the prepaid sub-meter.
Policies and guidelines shall be provided by concern
government agency to properly implement and
regulate the use of prepayment energy system in
commercial establishment deigned with multi-tenant
offices and rented accommodations.
References
Solid-State Electricity Meters, Holland, 2002
Prepayment Electricity, UtiliSol 2005/2007
Prepayment Energy Meters, UK ,2002
Prepayment Power Metering,2000
Prepayment Meters Scratch Card System,2002
Electric Meters, F D Gordon, 2007
Article on Power Peak Tariffs, Power and Water
Corporation, ABN,2005
Article on Prepayment Recommended for Low Income
Customers, New Zealand, 2007
Article on Prepaid Meters Supply to Sudan, S. Enslin,2004
Principles of Engineering Instrumentation, D.C. Ramsey,
1996
Prepayment Energy Meter,2007, W. Janda
Engr. Ferdinand D. Milan
E-mail Address: ferdinandmilan@yahoo.com
Tel.No. 911-09-64 local 336 /438-06-36/09196685758
The author is a graduate of Technological Institute of the
Philippines, Quezon City with a bachelor’s degree in Electrical
Engineering in October 1991 and became a registered electrical
engineer last April 1992. He is involved in several related
electrical design and installations. He is currently connected
to Systems Energizer, Incorporated as Consulting Engineer.
He obtained his Master of Science in Electrical Engineering,
MSEE (Major in Power) at Technological University of the Philippines, Manila last May,
2002 with the thesis entitled “Programmed-Based Empirical Formula for Transformer
K-Factor Rating Through Harmonics Pollution Analysis”. He is currently working in
TIP QC teaching professional subjects in electrical engineering program (power
system analysis, electric circuit analysis, system design, and safety management).
Currently, he is an Energy Audit Team member for NCR and Vice Chair for IIEE
Academic Affairs and an IIEE Life Member. He pursues his doctoral degree in PhD in
Technology Management at TUP Manila