Question 1

What is the difference between 400 Hz AC and 28.5 VDC ground power, and which does my aircraft need?

Accepted Answer

They are two different aircraft power types. 400 Hz AC (115/200 V) feeds the aircraft's main AC systems while it is on the ground — ElectroAir delivers it via the EAC frequency converter, the EAC-PBB under-bridge unit, or the AC channel of a combined APA GPU. 28.5 VDC feeds DC systems and supports engine-start surges — delivered by the EAR converter-rectifier or the DC channel of an APA/EACR unit. Many modern aircraft and ground operations need both, which is exactly why ElectroAir offers combined units (APA-100, APA-165, EACR). Which your fleet needs depends on the aircraft and the task (servicing vs engine start); share your fleet and ElectroAir will confirm. [confirm with supplier] for your exact aircraft.

Question 2

Which GPU should I choose for narrowbody versus widebody aircraft?

Accepted Answer

It scales with power demand. For a compact combined AC+DC unit, the APA-100 gives 90 kVA 400 Hz AC + 800 A 28.5 VDC in one mobile machine. For higher demand and engine starting — including widebodies (the range covers up to A380 on the air-start side) — the APA-165 offers up to 2x180 kVA AC, dual 28.5 VDC channels and 24/48 V engine start. Fixed converters (EAC) scale per-model from 2 up to 250 kVA, and to 1000 kVA paralleled for large installations. The right unit depends on the exact aircraft, simultaneous-stand demand and whether you need engine start. [confirm with supplier] for a fleet-matched sizing.

Question 3

Diesel or battery-electric GPU — what's the trade-off, and what is the APA-ECO?

Accepted Answer

Diesel GPUs (APA-100/110/165, APA-65) run anywhere off-grid on fuel and are best where there's no mains and high continuous duty. The battery-electric APA-ECO delivers up to 180 kVA of 400 Hz AC (plus optional DC) with zero CO2 and silent operation (<60 dB at 1 m) from a cobalt-free LiFePO4 battery rated for 6000 cycles and a >10-year life — and it can also run grid-fed like an electric GPU, or power an aircraft and recharge at once. Run time on battery alone is finite (up to ~10 h on the ECO 190) with recharge under 10 h. So: diesel for off-grid endurance, APA-ECO for emission/noise-restricted stands and sustainability programmes. Battery endurance and charge time in sustained Gulf heat: [confirm with supplier].

Question 4

Why is pre-conditioned air (PCA) so important for Gulf airports, and what does ElectroAir offer?

Accepted Answer

In Gulf summer heat a parked aircraft would otherwise run its own APU to cool the cabin, burning fuel and APU life. Ground PCA cools (and optionally heats) the cabin from airport equipment instead — saving fuel, emissions and APU wear. ElectroAir's EA-PCA line covers under-bridge (paired with a GPU), apron/mobile and hangar units, plus the mobile hybrid EA-ACU-45 (diesel, mains or hybrid). Critical caveat: the published data does not state cooling capacity or rated performance at high ambient temperatures, so the single most important number to obtain for a GCC site is the cooling output at your hottest design day. [confirm with supplier].

Question 5

Under-bridge power (EAC-PBB) versus mobile GPU carts — which is right for my terminal?

Accepted Answer

If you have contact stands with jet bridges, the EAC-PBB delivers 400 Hz power (up to 90 kVA) and optionally PCA directly from the bridge, with an automated relocatable cable coil — removing diesel GPU and PCA carts from the apron, cutting fuel, emissions, noise and apron traffic. For remote or bus-boarding stands with no bridge, you still need mobile GPUs (the APA range) or an underground PIT system. Many airports mix both. The EAC-PBB is built to MIL-STD-704F and ISO 6858; a real reference is 10 bridge-mounted units at New Kastelli (Heraklion) Airport, Crete. [confirm with supplier] for a Gulf-terminal scoping.

Question 6

What is an underground PIT system and when is it better than carts or bridge-mounted units?

Accepted Answer

ElectroAir's Hatch EAPIT is a flush, drive-over underground service point at the stand. Power (400 Hz / 28.5 VDC / 50-60 Hz) plus optional PCA, compressed air, water and data come up through a counterweight hatch rated to 90 t (EN 124 F900), keeping the apron clear of carts and trailing cables. It suits new-build or major apron refurbishment because the customer builds the concrete chamber to ElectroAir's spec. It works at stands without a jet bridge (where the EAC-PBB can't go) and consolidates multiple utilities in one chamber. A compact Mini EAPIT exists for smaller ramps and regional airports. [confirm with supplier] for civil-works scoping.

Question 7

Can ElectroAir start aircraft engines, and what about the air starter unit?

Accepted Answer

Yes, two ways. Electrically, the EAR (and the DC channel of APA/EACR units) provides 28.5 VDC with high overload headroom (up to 2500 A peak) for start surges, and the APA-165 adds dedicated 24/48 V engine-start modes. Pneumatically, the EA-ASU air starter delivers 280 lb/min at ~42 psi to start turbine engines on most Boeing (737-777) and Airbus (A300-A380) aircraft, reaching readiness in under 3 minutes. Important exclusion: the EA-ASU does NOT start GE90-powered aircraft. Match the method to your fleet — share your engine types. [confirm with supplier].

Question 8

What certifications and quality standards does ElectroAir hold?

Accepted Answer

Verified, certified by TUV Rheinland (LRTDEA) and valid through 2027: ISO 9001:2015 (quality, #10.16-170.1), ISO 14001:2015 (environmental, #10.16-170.2), ISO 45001:2018 (occupational health & safety, #10.16-170.3), and AQAP 2110:2016 — NATO quality assurance (#10.16-170.6). Individual products carry further compliance: the EA-ASU cites CE, IATA AHM 904/905/910/913/915/916/976, ISO 2026:1974 and SAE ARP 4084; the EAC-PBB is built to MIL-STD-704F and ISO 6858. The EA-PCA line falls within the ISO 9001/14001/45001 + AQAP 2110 certified scope. Any certification beyond these published items: [confirm with supplier].

Question 9

Does the NATO AQAP 2110 certification matter for defence and military buyers?

Accepted Answer

Yes — AQAP 2110:2016 is the NATO Allied Quality Assurance Publication for quality assurance in design, development and production, and ElectroAir holds it (certificate #10.16-170.6, via TUV Rheinland, valid through 2027). Combined with MIL/CIV-rated components across the range (e.g. the EA-ASU's CE/IATA/SAE compliance and the EAC-PBB's MIL-STD-704F build), this supports defence-aviation and military ground-support procurement. Any country-specific defence approval or qualification: [confirm with supplier].

Question 10

Is ElectroAir's equipment suitable for Gulf desert heat and dust?

Accepted Answer

On paper, much of the range is rated for it: the APA-110 and APA-165 to +55 C, the battery APA-ECO to +55 C, the EAC/EAR/EACR converters to +55 C, and the Hatch EAPIT to +55 C — all at 10-100% humidity with IP54/55 (or higher) protection, with FOD/dust protection on the PIT. Two things to watch: the EA-ASU air starter is rated to +45 C (below Gulf summer peaks) and several products (APA-100, APA-65, EAC-PBB, EAL, EACharger, EAI solar, marine) don't have a published temperature range in our data. And for PCA, the load-bearing figure — cooling capacity at high ambient — isn't published. Confirm tested Gulf-ambient performance, any de-rating, and hot-climate kits per product. [confirm with supplier].

Question 11

Where is ElectroAir based and how long have they been doing this?

Accepted Answer

ElectroAir OU is an Estonian aviation ground-power manufacturer founded in 2006, headquartered at Kapteni tee 1, Soodevahe, Rae parish, Estonia. They design, manufacture, install and service in-house, and report 300+ commercial and military customers across 100+ countries. That is roughly two decades of focused aviation ground-power engineering — GPUs, frequency converters, rectifiers, PIT systems, PCA, air starters, load banks and more.

Question 12

Does ElectroAir already supply customers in the Gulf?

Accepted Answer

ElectroAir's public references list country-level references that include the UAE, Saudi Arabia, Oman, Kuwait and Bahrain, among 100+ countries served. Honest framing: these are country-level references, not confirmed specific named airport deployments — we are not claiming a particular Gulf airport install. The one specific named install in our data is 10 bridge-mounted EAC-PBB units at New Kastelli (Heraklion) Airport in Crete (Greece). For named Gulf references relevant to your project: [confirm with supplier].

Question 13

How do I buy from ElectroAir through Aviation Souk?

Accepted Answer

Send a brief via Aviation Souk describing your operation: aircraft types and fleet mix, stand layout (contact stands with bridges, remote stands, hangars), the power types you need (400 Hz AC, 28.5 VDC, both), whether you need PCA, engine starting or a PIT, your duty hours, and your climate (your design-day ambient matters for PCA and battery sizing). ElectroAir designs, manufactures, installs and services in-house, so they scope the right configuration to your need. Commercial terms, lead times and pricing are quoted by ElectroAir against your brief. [confirm with supplier].

Question 14

What are the lead times and pricing?

Accepted Answer

Lead times and pricing are not published and depend on the configuration, quantity and any civil works (a PIT system or under-bridge install differs greatly from an off-the-shelf load bank). These are quoted by ElectroAir against your specific brief. [confirm with supplier].

Question 15

What warranty does ElectroAir provide?

Accepted Answer

Several products in the published data carry a stated 24-month (2-year) warranty — including the APA-ECO (24 months, negotiable), the EAC, EACR, EAR and EAC-PBB converters, the EA-ASU air starter and the Hatch EAPIT. Some other lines (e.g. load banks, EV charger, solar inverter, marine) do not have a warranty figure stated in our data. Treat 24 months as the typical headline where stated, and confirm the exact warranty terms and any extension for your specific order. [confirm with supplier].

Question 16

What spare parts and after-sales servicing does ElectroAir offer?

Accepted Answer

ElectroAir states that design, manufacture, installation and after-sales servicing are all handled in-house, and offers a standard toolkit (EAKIT) plus GPS fleet-monitoring telematics for managing GSE. Specific spare-part availability, stock-holding, service-level terms, response times and any in-region (GCC) service footprint are not published in our data and should be agreed as part of the contract. [confirm with supplier].

Question 17

Can ElectroAir support an airport's sustainability and Net-Zero goals?

Accepted Answer

Yes — this runs through much of the range. The battery-electric APA-ECO gives zero-CO2, silent 400 Hz (and optional DC) ground power; the solid-state EAC converters and EAC-PBB bridge units replace diesel GPUs at the gate; PCA avoids running the aircraft APU for cabin cooling; the EAI solar inverter generates 400 Hz from PV; and the EACharger electrifies landside fleets. ElectroAir also holds ISO 14001:2015 environmental certification. The quantified emission/fuel savings for your specific operation: [confirm with supplier].

Model	AC output	DC output	Frequency	Engine / power source	Emissions	Best for
APA-100 Combined Ground Power Unit	90 kVA (1 channel)	800 A, 28.5 VDC (1 channel)	400 Hz	Deutz TCD 3.6 diesel; optional plug-in hybrid	Stage V / Tier 4 Final	Compact mixed-fleet AC+DC in one unit
APA-110 Ground Power Unit	60 or 90 kVA, 3x115/200 VAC	28.5 VDC, 300 A or 800 A (EACR versions)	400 Hz ±0.01	Diesel 1500 RPM (Perkins or Deutz); optional plug-in	—	Remote stands / bases; zero-emission hangar use via plug-in
APA-165 / APA-165E Ground Power Unit	Up to 2x180 kVA, 3x115/200 V	Up to 2x 28.5 VDC / 800 A (overload to 2000 A); 24/48 V engine start	400 Hz ±0.01	Perkins or Deutz diesel, water-cooled	—	Widebody, dual-channel AC+DC + engine start
APA-65 (EAR-600) Diesel Ground Power Unit	Optional (hybrid)	28.5 VDC / 600 A nominal (2000 A peak)	—	Diesel (Deutz)	Stage V	DC-powered aircraft at remote / rugged airfields
APA-ECO Series — Battery-Driven (Electric) Ground Power Unit	45 / 60 / 90 / 120 / 140 / 180 kVA, 115/200 VAC	Optional 28.5 VDC, 100–800 A (peak to 2500 A)	400 Hz ±0.001	LiFePO4 battery (120–320 kWh); optional 3x400 V grid input	Zero CO2, <60 dB @ 1 m	Zero-emission / indoor / off-grid stands
APA Plug-in Hybrid Ground Power Units	400 Hz AC (e.g. 90 kVA on APA-100)	28.5 VDC (e.g. 800 A on APA-100)	400 Hz	Diesel + integrated battery, optional plug-in (grid)	Lower emissions / quieter on plug-in or battery	Regional / mixed-fleet, reduced-emission zones
EACR Series — Combined 400 Hz AC + 28.5 VDC Power Supply Unit	Up to 90 kVA (series ladder 2–250 kVA), 115/200 VAC	28.5 VDC up to 800 A; optional 28/56 VDC dual-channel	400 Hz ±0.001	Mains-fed static (3x400 V input); no engine	—	Fixed AC+DC, two independent channels, pre-flight prep

Model	Output	Input	Output frequency	Power range	Efficiency	Best for
EAC Series — 400 Hz Solid-State Frequency Converter	115/200 VAC ±2, THD ≤3%	3x400 V ±10%, N, PE; 50/60 Hz	400 Hz ±0.001	2–250 kVA per model (series to 1000 kVA)	97%	Fixed / towable / under-ramp 400 Hz aircraft power
IAC 60 Hz Frequency Converter	220/380 V, ±2% stabilisation	3x 380 V + PE, 50 Hz ±10%	60 Hz (±0.1%)	3–300 kVA (configurable)	97%	Industrial 60 Hz supply / motor & workshop test stands

Model	Mounting	Function	Power source	Aircraft	Best for
EA-ACU-45 — Mobile Hybrid Air Conditioning Unit (PCA)	Mobile, trailer-mounted (tow bar + brake)	Cooling (summer) + heating/dehumidification (winter)	Diesel, 3-phase mains, or hybrid (mains + diesel)	Commercial airliners, business jets, military	Mobile PCA at apron / remote stands / hangars
EA-PCA Series — Aircraft Air Conditioning Units (under-bridge / apron / hangar PCA)	Under-bridge (fixed, with GPU), apron/mobile, or hangar	Cooling + optional heating; dehumidification; cabin pre-cool	—	—	Under-PBB one-stop GPU+PCA, plus apron / hangar

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Product range · 30

Ground Power Units8

Power Conversion3

Climate & Cabin Air3

Apron Infrastructure4

Engine Starting & Gas3

Test, Monitoring & Tools6

EV & Renewables2

Marine Power1

Video library · 1

Certifications by issuing body · 5

TÜV Rheinland LRTDEA (Latvia)

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Ground Power Units

Power Conversion (Frequency Converters)

Climate & Cabin Air (PCA)