U.S. Embassy – Papua New Guinea


Mains Voltage Stabilisers: How it Empowers The Growth Of A Nation With Voltage Stabilisation



Case Study For U.S. Embassy in Papua New Guinea

As one of the 163 U.S. Embassies spread around the world, the U.S. diplomatic mission based in Port Moresby has for years pursued aligned interests and cooperative relationships with the people of its host country, Papua New Guinea.

Photos at the end

The Problem:
Fundamentally Flawed


Home to a highly dispersed and remote population, 87% of Papua New Guineans live in rural areas while the country itself relies heavily on industries such as agriculture and energy extraction as sources of revenue. 


At the time, the existing 3-phase nominal voltage across Papua New Guinea stood at 415V.


Despite the local government’s stipulated tolerance of a 4-6% fluctuation from the grid operator, our calculations pointed to a potential voltage drop of about 13% or more. 


The Official Residences in Port Moresby were also suffering from drastic Voltage Fluctuations caused by poor power quality from the main incoming supply. This led to malfunctions of electronic, electrical appliances and even flickering lighting issues in the estates.


These incoming voltage values proved detrimental to the operational uptime in the entire Embassy’s compound.



Identifying The Hidden Risks

At the time, the existing 3-phase nominal voltage across Papua New Guinea stood at 415V.


Despite the local government’s stipulated tolerance of a 4-6% fluctuation from the grid operator, our calculations pointed to a potential voltage drop of about 13% or more. 


These incoming voltage values proved detrimental to the operational uptime in the entire Embassy’s compound. 



Switching On Democracy With Voltage Stability

Faced with these unique challenges in Papua New Guinea, the U.S. Embassy turned to Ashley Edison Global for a permanent yet cost-effective solution that would enable them to optimise their ground operations with ease.


Responding quickly to this call for assistance, in 2007, Ashley Edison deployed a multitude of Automatic Voltage Stabilisers of up to 120 KVA within the U.S. embassy’s offices, staff residences, living quarters and housing estates in Papua New Guinea.

The Solution: Ashley Edison Mains Voltage Stabilisers

Ashley Edison’s industry-leading Electro-Mechanical Servo Electronic Design (SES) Automatic Voltage Stabilisers have repeatedly proven their durability and dependability in some of the world’s harshest and most demanding power environments and they outperformed all expectations amidst the unpredictable climate and terrain in Papua New Guinea.


The SES Series – Automatic Voltage Stabiliser UK: Offers ideal power protection for 3-phase applications that demand highly precise output regulation. These voltage stabilizers are based on Electro-Mechanical Servo Electronic Design, which boasts reliability, and low operating costs for more than 95% of all applications. 


This specified Automatic Voltage Stabiliser series includes:

  • Electro-Mechanical Servo Electronic Design
  • Stepless Voltage Regulation for high precision (± 0.5% voltage accuracy)
  • Forced-Air Cooling for improved operational efficiency (field-tested with >98% efficiency)
  • Independent Phase Balancing & Control: Automatic voltage sensing & precise regulation to ensure the individual phase voltages remain stable – regardless of load change or unbalance.
  • Transient Voltage Surge Protection (TVSS) to protect critical loads against harmful high energy surges, transients and spikes.
  • Exceptionally wide input voltage tolerance that constantly regulates erratic voltage fluctuations.


Ashley Edison Global has a wealth of experience in supplying Automatic Voltage Stabilisers (AVR) to diplomatic missions all around the world:


Delivering a total of more than 76 Automatic Voltage Stabilisers of up to 1,250 KVA to U.S Embassies, French Embassies, Singapore Embassies and other Consulates in challenging locations such as Timor Leste, Nepal, Myanmar, Tajikistan, Afghanistan, Pakistan and Djibouti. 


The operational versatility, combined with the resilience of high-quality equipment made Ashley Edison Global a natural fit for the job to help The U.S. Embassy successfully safeguard their operations by ensuring regulated voltage distribution, and delivering clean, constant access to one of the most crucial necessities of life in the developing world.



The Results

Freed from the threat of voltage irregularities and unplanned operational downtime, our client could now turn their full attention towards the furtherance of diplomatic relations with Papua New Guinea and aid in the nation’s political, economic, and social transformation.


With the presence of more reliable electrical infrastructure within Papua New Guinea, we can be assured of the future progress, resilience and growth of the country as it charges towards a brighter tomorrow. 

To learn more on how to optimise your electrical system and protect your uptime, drop us an email at [email protected].


For more case studies on how the military sector is leveraging these industry techniques, read the comprehensive report here.


Embassy of the United States
AVR | 120 KVA | Quantity Confidential
Scroll to Top

Stay Safe With Greater Protection

As safety is our utmost priority, Ashley Edison prepares for every scenario possible
—taking the puzzle out of your protection.

Designed And Engineered With Safety In Mind

We leave nothing to chance when it comes to larger capacity units (≥400KVA). By installing high-quality protective acrylic shields in front of live parts, we ensure the safety of your personnel at all times. For enhanced protection during installation, all distances between uninsulated metal parts, busbars, and cable sizes are compliant with IEC61439-1 and IEC 61439-2 guidelines.

Outfitted with fireproof cable trunking, this protective solution safeguards against long fire exposure even in hazardous areas and explosive atmospheres—providing maximum safety for mission critical applications.

Fuss-Free Installation. Seamless Operations.

To ensure ease of installation, Ashley Edison addresses the concerns of contractors and installers by keeping it simple.



We keep the installation process simple and streamlined by allowing sufficient working space for installers. Taking the nut and bolt intrusions into consideration, we ensure that the distance between the uninsulated metal parts, the busbars, and cable sizes are compliant with IEC61439-1 and IEC 61439-2 guidelines.


Even in units with larger capacities, all busbar terminals are clearly marked out, and well positioned in line for easy identification of individual input and output terminations. Installation of these terminations are similar to those practised in high voltage transformers.

Easy Maintenance

Annual Ocular Maintenance
Visual Inspection 230

Conduct Visual Inspection On Voltmeter:

Ensure reading is set to your desired set output voltage value (e.g. 230V).

LED Status

Ensure LED Status Indicators are at “Normal”.

Subtxt LogoAsset 62 RGB

Visual Observation Of Variable Transformer Surface:

Use airbrush for dusty environments if necessary.

Subtxt LogoAsset 72 RGB

Visual observation if carbon brush is not worn out.

Moving Motor

Conduct visual inspection to check variable transformers are all regulating (moving).


Accuracy. Beyond Imagination.

The digitally enhanced Ashley Edison MBB Card ensures pinpoint voltage stabilisation against the most erratic anomalies, allowing you to protect precious uptime, effortlessly. Harnessing ultra precision capabilities to produce some of the tightest output voltage tolerance available in the industry, the Ashley Edison MBB Card delivers ±0.5% voltage accuracy, enabling your load equipment to enjoy optimal voltage supplies, regardless of load change in your electrical system.

Expert Digital Control

Utilising the advantageous measurements of true RMS, the Ashley Edison MBB Card’s reads both perfect, sinusoidal waves, as well as complex, distorted non sinusoidal waves—up to 0.1V accuracy. Coupled with lightning fast response time of 1.5ms, this expert digital control feature equips your load with total voltage protection that is precise, continuous and ultra responsive.

AE Digital Control Display_230v

Universal Presettable Function

The Universal Presettable Function onboard the Ashley Edison MBB Card allows seamless control of your desired output voltage value on all 3 Phases—with just a touch of a button. This multifunctional feature enables each AVR to fully operate with just 1 card, instead of separate cards for each individual phase. Fitted LED Output Voltmeter Display and Alert Indicator better facilitates easy status monitoring while performing maintenance on your AVR.


Microcontroller Unit (MCU)

MicroController Unit (MCU) helps you to deliver high speed and reliable efficiency in the AVR’s operations with less heat generation and reduced power consumption. Used in Supercomputers, Surface Mount Technology (SMT) allows components in the Ashley Edison MBB Card to be aligned closer together, creating a more compact and lightweight end product. Additional safety wire-to-board feature establishes fail-proof connectivity between circuits—so you can work safely on your AVR.