USED 2016 SIEMENS SGT-A05 KB7S / 501-KB7S

ARC Power Systems is offering six, low-hour Siemens 501-KB7S mobile natural-gas turbine generator packages. These units are available now and already configured on five-axle mobile trailers for rapid relocation, installation and deployment.

The six-unit fleet provides approximately 32 MW of aggregate generating capacity.

These packages are well suited for data centers, AI and HPC campuses, industrial facilities, microgrids, mining operations, critical infrastructure, distributed generation and bridge power while permanent utility capacity is being developed.

Power Ratings

Each package includes a Siemens 501-KB7S natural-gas turbine, Allen reduction gearbox and Ideal Electric synchronous generator.

Gas-turbine rating: 5,220 kW at ISO conditions with no package losses

Generator rating: 5,250 kVA

Calculated output at 5,250 kVA and 0.90 power factor: 4,725 kW

Voltage: 2,600 V

Phase: 3-phase

Frequency: 60Hz

Generator speed: 1,800RPM

Power class: approximately 5MW per package

Six-unit fleet capacity: approximately 28.5MW

The packages are being marketed as 5 MW-class units because turbine output, generator capacity and net site output represent different rating boundaries. Final delivered output follows the ambient-temperature and elevation performance schedule together with the installed generator, switchgear and auxiliary-load limits.

Siemens 501-KB7S Gas Turbine

Siemens 501-KB7S natural-gas turbine

Single-shaft, simple-cycle configuration

15-stage axial-flow compressor

Four-stage turbine section

Six combustion chambers

Approximate 13.5:1 pressure ratio

Operating speed approximately 14,400 to 14,600 rpm

Dry Low Emissions natural-gas combustion system

Electronic fuel metering and redundant gas shutoff arrangement

Compressor water-wash provisions

Designed for mobile industrial power generation

Generator

Ideal Electric four-pole synchronous generator

5,250 kVA rating at 40°C

2,600 V, 3-phase, 60 Hz

1,800RPM

Open-drip-proof construction

Brushless exciter

Permanent-magnet alternator

Digital voltage regulation

VPI insulation system

Class F insulation and temperature rise

Greater than 96.5% stated full-load efficiency

Subtransient reactance of 0.188 per unit

Selected for loads with up to 30% total harmonic distortion

150% current capability for one minute

110% rated-load capability for two hours within a 24-hour period

High-resistance neutral grounding limited to less than 10 amps

Reduction Gearbox

Allen Gear model ASG 30 epicyclic reduction gearbox

8,716 hp rating

8.105:1 ratio

Approximately 14,500 rpm turbine input

1,800 rpm generator output

1.3 AGMA service factor

99% stated full-load efficiency

Electrical System and Switchgear

Each trailer incorporates the major electrical equipment required to operate the turbine-generator package.

Siemens NXPLUS C medium-voltage gas-insulated switchgear

Three onboard feeder breakers in the original island-mode configuration

Medium-voltage quick-connect output provisions

Onboard 2.6 kV-to-460 V auxiliary transformer

460 V auxiliary distribution

Derived 240/120 V package services

Generator metering and protective relays

Automatic and manual synchronization capability

Voltage regulation

VAR and power-factor control

Vibration and temperature monitoring

Allen-Bradley PLC-based local control system

Local operator interface

24 VDC control-power battery system

Starting System

The turbine uses a 175 hp/130 kW electric starter motor controlled through a variable-frequency drive.

The original design uses a separate 250 kW/312 kVA, 480 V diesel generator or equivalent external 480 V power source for black-start power. The startup sequence includes an enclosure purge, acceleration to approximately 4,000 rpm, an exhaust purge, ignition, acceleration to operating speed, synchronization and loading.

Mobile Trailer Package

OnPower-engineered mobile package

Five-axle Mertz transport trailer

Air-ride suspension

Approximately 80,000 lb estimated packaged-unit weight

Weather-protected, compartmented enclosure

Dedicated access to turbine, gearbox, generator, switchgear and controls

Enclosure lighting and service receptacles

Electric enclosure ventilation

Filtered turbine inlet-air system

Packaged exhaust system

Turbine removal rail and hoist provisions

Design elevation range from sea level to 6,000 feet

Package design temperature range from approximately -28°C to 45°C

Enclosure acoustic design target of 85 dBA or less at one meter

Lubrication, Cooling and Protection

Common synthetic-lube-oil system serving the turbine, gearbox and generator

Shaft-driven main oil pump

Electric pre-lube pump

Duplex oil filtration

Air-cooled oil heat exchangers

Oil reservoir heaters

Combustible-gas monitoring

UV/IR flame detection

Thermal detection

Alarm horn and strobe

CO2 fire-suppression system

Emergency shutdown protection

Operating Hours

Low-hour fleet consisting of:

Unit A: 966 hours

Unit B: 2,086 hours

Unit C: 1,162 hours

Unit D: 1,869 hours

Unit E: 478 hours

Unit F: Test-fire hours only

Site-Condition Performance Reference

Gas-turbine output changes with ambient temperature and elevation.

At 15°C: 5,149 kWe at sea level; 4,099 kWe at 6,000 feet

At 25°C: 4,709 kWe at sea level; 3,749 kWe at 6,000 feet

At 30°C: 4,475 kWe at sea level; 3,562 kWe at 6,000 feet

At 35°C: 4,230 kWe at sea level; 3,365 kWe at 6,000 feet

At 40°C: 3,977 kWe at sea level; 3,160 kWe at 6,000 feet

At 45°C: 3,720 kWe at sea level; 2,954 kWe at 6,000 feet

Cold-condition turbine output can exceed the installed generator rating. Electrical delivery remains limited by the generator, switchgear, protection settings, auxiliary demand and project operating limits.

Fuel and Emissions

The packages are configured for natural gas and include Dry Low Emissions combustion.

The Siemens SGT-A05/501-KB7S family publishes DLE NOx capability at or below 25 ppmvd at 15% oxygen under the stated OEM operating conditions. Packages were designed around EPA 40 CFR Part 60 Subpart KKKK requirements.

Site Integration

This mobile package contains the turbine, gearbox, generator, controls, switchgear, auxiliary transformer, starting equipment, lubrication system, fire protection, inlet system and exhaust system.

We can coordinate logistics

Best-Fit Applications

Behind-the-meter data-center power

AI and high-performance-computing campuses

Industrial primary or prime power

Microgrids

Distributed generation

Mining and remote-site power

Critical-infrastructure resilience

Interim or bridge power

Phased power projects requiring modular capacity

Multi-unit installations requiring operational redundancy

Availability

All six packages are available now. Units may be discussed individually, as a partial block or as a complete six-unit fleet.

Subject to Prior Sale

Contact us today

ARC Power Systems

[email protected]

(213) 371-2848 Call/Text

https://www.arcpowersystems.com/en/pages/contact-page