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Ver Pangonilo

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Summary of Qualifications

Professional Registrations
— Philippines: Professional Electrical Engineer (First Placer – April 1991)
— Australia: Registered Professional Engineer of Queensland (RPEQ)
Professional Memberships
— Institute of Integrated Electrical Engineers (Philippines) – Life Member No. 23633
— IEEE Member No. 90438137 - IEEE Power & Energy Society
Education
B.Sc (Eng) Electrical, 1983 - Saint Louis University
Baguio City, Philippines
Specialist Courses
— Hazardous Area Classification Certificate No. CT04248 (Australia)
 → UEENEEM015B Classify hazardous areas
 → UEENEEM016B Design electrical installations in hazardous areas
 → UEENEEM017B Design explosion-protected electrical system
In partial completion of UEE61207 - Advanced Diploma of Engineering - Explosion protection
Training and Seminnars
— ISO 9001:2015 - Understanding and Requirements Implementation
— Effective Risk Management
— Task Risk Assessment

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Core Competencies

Concept definition, front-end engineering (FEED) and detail design engineering
— Equipment specification, selection, procurement, installation and commissioning
— Power distribution, earthing, lighting and lightning protection design
Procurement, project management and construction management
— Purchase requisitions and technical bid evaluations
Power System Design
— Power system modelling(ETAP, SKM Power Tools, PowerCad)
— Electric Power Distribution for Industrial and Commercial Facilities
— Short-ciruit Calculation and Protection Coordination
— Calculations for equipment selection
— Earthing (grounding) and lightning protection
— Lighting design
Commissioning, maintenance, estimating and construction
— Capital Expenditure (CAPEX) estimating
Hazardous area design and installation
— Upstream and downstream oil & gas facilities, refineries and process plants
— Offshore platforms, floating production storage and offloading (FPSO)
— LNG pipelines, bulk water transmission pipeline
— Tunnel/underground facilities installations
Water pumping stations, water treatment & sewage plants

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Posted in Construction on November 24th, 2020

Technical Query – Raise Only When You Know What You Are Doing

A technical query (TQ) is a document containing a question or questions which is raised by the contractor to their client. It is a contractual document which requires a formal response from the client. A TQ is a method to clarify and resolve ambiguities in the contract or scope of work. In most cases, the parties will be able...
Posted in Design on September 15th, 2020

Determining the required sizes of earthing conductors and earth electrodes

The sizes of earth conductors and earth electrodes are almost always chosen from typical sizes as provided by a particular project standard. If using non-typical sizes can extensively impact the cost of the project, it would be best for the Electrical Engineer to calculate the required sizes of earth conductors and earth electrodes. IEC 60949:1988 - Calculation of thermally permissible...
Posted in Design / Protection on September 14th, 2020

The Purpose of Maximum and Minimum Short-circuit Currents

The calculation of maximum and minimum short circuit currents has been discussed in IEC 60909 - Calculation of Maximum and Minimum Short-circuit Currents. What are the significance of these values? The maximum calculated short-circuit current values are used for
  • Selecting interrupting devices of adequate short-circuit interrupting and peak rating,
  • Checking the ability of components of the...
HV_Circuit_Breaker
Posted in Design / Protection on September 8th, 2020

Circuit Breaker Ratings – A Primer for Protection Engineers

This paper prepared by Bogdan Kasztenny, Schweitzer Engineering Laboratories, Inc. and Joe Rostron, Southern States, LLC which was presented at the 71st Annual Conference for Protective Relay Engineers and can be accessed at here. This paper "Circuit Breaker Ratings – A Primer for Protection Engineers" deals primarily on high voltage circuit breakers:
  • Explains the asymmetrical short-circuit interrupting current rating
    • ...
Tolerable Risk
Posted in Design / IEC on July 11th, 2020

Tolerable Risk – IEC 62305-2

In performing risk assessment as an essential step in the application of IEC 62305, the calculated risk of loss due to lightning shall be below the tolerable level. Tolerable risk (RT) as defined in IEC 62305-2 is
tolerable risk RT
maximum value of the risk which can be tolerated for the structure to be protected
Also referred to...
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Tutorials

MVA Method

At this times where supercomputers could fit into a mobile phone and utility softwares are always available to do particular tasks, most Electrical Engineers tend to forget how to implement …

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Short Circuit Study
What is a Short Circuit Study? A short circuit study calculates the short circuit capacity at designated locations within a...
MVA Method Short Circuit Calculation
A Short Circuit Study is an important tool in determining the ratings of electrical equipment to be installed...
MVA Method Load Flow Calculation
In previous tutorials for the MVA method, we have discussed the importance of Short Circuit Study, combining KVAs and...
MVA Method for 3-Winding Transformer
In previous tutorials, the examples provided were mostly for 2-winding transformers. In this tutorial, fault calculations for a 3-winding...
Complex MVA Method – Part 3
In Part 2, we have seen how to combine MVAs connected...
Complex MVA Method – Part 1
The normal MVA method, despite its simplicity, provides only an approximate solution to determine the fault levels in a...
Complex MVA Method – Part 2
After presenting the equations that we will be using for the Complex MVA Method in Complex MVA Method – Part 4
In Part 1, Part 2, and Part...
Short-circuit apparent power of the system
When doing power systems study, it always the predicament of Electrical Engineers where to get the values of the...
Combining KVAs
KVAs in series. The total KVAs in series (KVAtotal) is the reciprocal sum or inverse sum of all series...

Cable Selection

Cable Selection – Single Phase Earth Conductor Sizes Fault Loop Impedance High Voltage Cable Selection – Underground

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Cable Selection – Single Phase
Note: This will be the first of a series of tutorials for the selection of cables. The objective of this...
Fault Loop Impedance
Note: This is the second part of a series of tutorials for cable selection. We have done cable selection based...
Cables Selection for Motors
When selecting a suitable cable size for a motor, there are more parameters to consider than when selecting cables...
High Voltage Underground Cable Selection
Unlike the other Cable Selection tutorials which deals with low voltage (LV) cables,...
Earthing Conductor Sizes
The following table lists the recommended minimum sizes of earthing conductors. Note: This serves only as a guide, calculations are...
Arc Flash Hazards
It's not too long ago that arc flash hazards has become an important part of electrical design. More clients...
IEEE 1584 Arc Flash Calculations
IEEE 1584 provides empirical formulas for determining arcing fault current, flash protection boundaries, and incident energy. The formulas are...
Time-Current Curves Using Excel – Part 1
In these articles, I have discussed the methodology on how to create time-current curves using excel.
  1. Creating Coordination Curves...
Time-Current Curves
Discrimination & coordination using Time-Current Curves
  1. TC Curves Part 1 - Introduction
  2. TC Curves...
Time-Current Curve Part 2 – Discrimination
In Part 1, I have discussed the basics of using excel in plotting time-current curves. In this tutorial,...
Voltage Drop Calculation
This article provides a guideline on the selection of electrical cables. Cable selection is an important part of electrical installation...
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Our Services

Technical Consulting

We provide technical support, perform troubleshooting functions and resolve customer issues.

Project Concept Developemnt

We provide solutions to turn customer ideas into reality.

Detailed Engineering

We prepare all technical documents including to drawings to enable procurement of materials or and equipment and to carry out construction.

Project Management

Let us help you achieve your project goals and objectives within scope, time, and budget.

Construction

We build and deliver your project according to your requirements, specifications, budget and schedule.

Maintenance

We provide solutions to ensure optimum performance of your equipment.

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Design Guides

This design guide is intended provide typical electrical installation scenarios with each scenario to include compliance to standards. As their are many ways of complying with standards,this design guide is prepared to suit the minimum standards requirements.

While design principles equally applies to larger and more projects, this design guide will not attempt to address the design needs of those installations.

Philippine Electrical Code

PEC 2009

A Design Guide according to the Philippines Electrical Code is available at Filipino Engineer Wiki

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