We offer a wide range of services to cater for your electrical requirements. If there is a service you need that is not listed below, please contact us for a direct consultation.
Testing And Calibration
- Supply & Installation of New Main Switchboards (MSB)
- Upgrading LV system to HT Supply
- Troubleshoot of LV system problems
- Maintenance of Main Switchboard
- Testing and Calibration of 11kV/415V Earth Fault and Overcurrent Relay
- Service, mechanism check, trip test, IR test and cleaning of Air Circuit Breakers
- Checking the integrity of cable and connections within the switchboard
- Checking of power factor level, power factor relay, its setting, contactor, full amperage check for capacitors
- To clean the interior of the LV Switchboard including tightening of the busbars and cable connection
- Provision of Endorsed Report by Service Engineer and recommendations (if any)
In accordance to the Electricity & Supply Act 1990, governed by SuruhanJaya Tenaga (ST),any protective relay and device of an installation shall be checked, tested and calibrated by a competent person once every two years
Testing & Commissioning HV installation
Competent Persons & SLD
- BO Chargeman
- AO, A1, A2, A3, A4 Chargeman
- PW4 Wireman
- Schematic Line Diagram of Switchboard
What is Power Factor?
Power Factor is a measurement of how effectively you are using your electricity
- A Power Factor (PF) of 1 means 100% of the supply is used efficiently
- As PF decreases from 1, it means the use of power becomes less efficient
- A PF of 0.85 and less means the use of power is very inefficient and as a result TNB charges a penalty
Power Factor Penalty
- 1.5% surcharge of the current bill- for every 0.01 less than 0.85 PF
- 3% surcharge of the current bill- for every 0.01 less than 0.75 PF
To understand power factor, we need to start with the definition of some basic terms:
Kilo Watts (kW) is Working Power
It is also referred to as Actual Power, Active Power or Real Power It is a measurement of the power that actually powers the equipment and performs useful work
Kilo Volt Amps Reactive (kVAr) is Reactive Power
It is the power that magnetic equipment like transformers, motors and relays need to produce the electromagnetic field
Kilo Volt Amps (kVA) is Apparent Power
It is the vector summation or the electrical combination of KVAR and KW
How is Power Factor Calculated?
Power Factor (P.F.) is the ratio of Working Power to Apparent Power.
Looking our glass of Cola analogy power factor would be the ratio of Cola (KW) to Cola plus the foam (KVA).
The kVA is supplied by the Power Station and amount of True Power kW and Apparent Power kVAr consumed is determined by the end user
Power Generation & Supply
So Why Does TNB Charge for Low Power Factor?
- If our use of power is inefficient i.e. if our kVAr REACTIVE power is high our Power Factor will be Low
- TNB Generates Power in kVA so that even if our kW consumption is low if kVAr is high TNB's generating and supply capacity has to be increased in order to supply our inefficient power
So Why is TNB concerned about our Power Factor being Low? If we pay TNB a Penalty Charge for Low Power Factor they are making a profit!
Although TNB recovers some cost through Power Factor penalty charges it still costs TNB MORE to generate and supply the extra Power than its recovers through penalty charges.
Therefore TNB actively encourages their customers to reduce their Power Factor.
Call us today at 03-5879 9040 if you are experiencing a PF Penalty or 'Angkadar Kuasa Surcaj'. Make sure you have a copy of your TNB bill on hand for an accurate assessment.
An energy audit is an inspection, survey and analysis of energy use for energy conservation in a building, process or system and a preparation of a report showing ways in which energy use may be reduced in the system without negatively affecting the output(s). It is a compilation of energy related data of the energy/mass balance in an energy using/producing system. Once a system is identified, its boundaries clearly specified, and all mass and energy inputs and output measured, it will be possible to tell where, how much and at what cost energy is being provided to a system.
A system can be a building or a part of a manufacturing process. To complete the picture of energy use it is also necessary to study energy use patterns and trends and to understand energy use as a function of time, productivity, building occupancy and load profiles.
In an energy audit you will be tracing the energy inputs and outputs. You will learn the quantities and costs of energy used at each step in the operation of a system, understand the patterns of energy use and see opportunities for energy savings. Only with the gathering of such information can creative or straightforward ways be developed to reduce energy use and costs. An energy audit should only be conducted if there is a commitment on the part of the Company to do something with the results.
An Energy Audit involves the following steps:
Collection of energy related data
Identify energy saving measures
Estimating implementation costs and energy savings of energy saving measure
Writing an audit report
There are three types of Energy audits, namely;
Desktop Audit – desktop data collection
Walk through Audit – where Field Data Collection may be necessary
Energy Data Logging Audit – more in-depth study
HV Switchroom & Substation Installation
- Complete Assembly of HV Switchboard including. Switchgear, Busbar, HV cables installation and Protection equipment
- Installation of Power Transformers and associated Protection Circuits and Cabling
- Installation of Circuit Breakers, Current Transformers, Voltage Transformers, Protection Relays, Lightning Arrestors
HV Aerial & Underground Cable Installation
- Excavation including. Pits and Conduit
- Pole placements
- Cable Hauling
Generator & Backup System Installation
- Complete installation, including control wiring, protection relay, HV testing and commissioning
LV Switchboard Installation
- Manufacture, test, install and commission LV switchboards
- Rebuild existing Switchboards to clients requirements
We provide a wide range of application services with regards to TNB requirements, which includes;
- New Supply Application
- Upgrading from single phase to three phase
- Upgrading incoming supply from 100A up to 1200A
- Upgrading incoming supply from Low Voltage (LV) to High Tension (HT)
- Tariff Conversion
- Enhanced Time of Use (ETOU) Conversion