BLT Variable Frequency Air Compressor (11–90 kW)-Products-Geso Systems Vietnam Co., Ltd

BLT Variable Frequency Series (11–90 kW) • Benefits from more than 140 years of heritage and technical expertise. • Leveraging the outstanding design capabilities and extensive experience of the European Group headquarters in air compressors, following strict development processes and testing standards of the European Group, with enhanced design adapted to China’s complex climates and harsh working conditions, ensuring reliable quality for every BLT series air compressor.
High-Quality Core Components • The air end is the heart of a screw compressor; its performance directly affects the overall efficiency and service life. BLT adopts air ends from Atlas Copco, a leader in the air compressor industry. • SAP profile optimizes screw compression efficiency to the greatest extent, saving more than 5% energy compared to similar products on the market. • High machining precision, low vibration and low noise from the air end. • SKF heavy-duty bearings and high-rigidity rotors ensure long-lasting and reliable operation.
Intelligent Control System • LCD display in Chinese and English, user-friendly and intuitive, allowing quick and easy adjustment of unit parameters. • Powerful all-round protection: maximizes prevention of failures caused by short circuit, locked rotor, phase loss, overload, etc. • Multiple signal outputs: switch analog / RS-485 port; large-screen touch main controller available as an option.
Electrical System • Standardized design, safe and reliable. • Professional wiring interfaces with neat, clear and reasonable layout for easy maintenance. • High-end Siemens components ensure long-term safe operation.
Modular Design Units with power ≤ 37 kW feature an innovative modular design, integrating high-efficiency air end, valve group, main piping and oil‑air separation system. It achieves zero leakage, low pressure loss, and easier maintenance. This pioneering technology delivers high efficiency and reliability for the unit.
High-Quality Motor • High-efficiency design with SKF bearings ensures an extra-long service life. • IP54 protected totally enclosed motor operates reliably even under harsh conditions. • Phase sequence protection as standard to prevent reverse rotation.
Efficient & Robust Cooling Design • Oil cooler design: maintains lubricating oil temperature within the normal range even in high‑temperature, dusty environments, ensuring safe operation in summer.
Pre-Filtration Protection • Unique pre-filter enclosure design keeps the interior clean, extends maintenance intervals, is easy to disassemble and clean, and can be reused.

Average energy savings up to 30% or more

Bolaite variable frequency air compressors automatically adjust motor speed to track changes in air demand, delivering average energy savings of 30% or more.
The extra investment in a VFC variable frequency compressor can be recovered within 1–2 years.

Standard models: fluctuating air demand, higher operating costs

Standard air compressors use a wide pressure band to cope with fluctuating air demand, loading at high demand and unloading at low demand.
This results in higher system pressure and higher energy consumption.
Due to fluctuating air demand, the compressor runs unloaded for long periods, causing energy waste.

Perfect combination of air end and high-efficiency permanent magnet motor

BLT PM+ Permanent Magnet Variable Frequency Compressor

The newly launched Atlas Copco air end is combined with a high-efficiency permanent magnet motor, featuring a proven split direct-drive system.
It avoids the disadvantages of integrated permanent magnet compressors such as difficult assembly/disassembly and easy demagnetization,achieving maximum efficiency while ensuring high reliability.

New air end

Specially developed for variable frequency applications, the Atlas Copco air end maintains high efficiency over a wide frequency range and meets China Class 1 Energy Efficiency Standard at rated frequency.

High-efficiency permanent magnet motor

• IP55 totally enclosed motor, preventing dust from being attracted to the motor magnets.
• No excitation current during startup.
• High-grade magnetic steel with 180°C heat resistance.
• IE3 high-efficiency energy-saving motor.

Large touch-screen main controller

• Custom-designed for variable frequency drives.
• LCD display with Chinese/English switchable.
• Comprehensive self-diagnosis: fault alarm, maintenance reminder, automatic shutdown, with clear real-time instructions.
• Clock function for programmable auto start/stop.
• Multiple signal outputs: RS485 port.

Direct drive

• 1:1 direct drive, stable and efficient.
• Proven split direct-drive design offers higher reliability than integrated drives.
• Imported large-size coupling ensures an extra-long service life for the drive system.

VFC Variable Frequency: variable flow, energy-saving control

The working pressure set for the variable frequency compressor matches the customer’s required pressure, keeping the whole system at lower pressure.
Thanks to variable speed adjustment, it meets low-load demand with almost no unloading, eliminating unnecessary energy consumption.

Model	Discharge Pressure	Displacement	Power	Noise	Dimensions	Weight	Discharge Port Diameter	Inlet/Outlet Port Diameter
	MPa	m³/min	kW	dB(A)	mm	kg	Inch	Inch
BLT-15A PM+	0.7	0.41-1.72	11	64±2	1150×900×1310	200	G3/4"	-
	0.8	0.41-1.70
	1	0.41-1.50
BLT-20A PM+	0.7	0.40-2.0	15	64±2	1150×900×1310	210	G3/4"
	0.8	0.40-2.0
	1	0.40-1.7
BLT-25A PM+	0.7	0.7-3.0	18.5	64±2	1150×900×1310	360	G1"	-
	0.8	0.7-2.9
	1	0.6-2.5
BLT-30A PM+	0.7	0.7-3.5	22	64±2	1150×900×1310	380	G1"	一
	0.8	0.7-3.4
	1	0.6-3.0
BLT-40A PM+	0.7	1.2-5.0	30	65±2	1460×950×1410	560	G11/2"
	0.8	1.1-4.7
	1	1.1-4.1
BLT-50A PM+	0.7	1.2-5.9	37	65±2	1460×950×1410	580	G11/2"	-
	0.8	1.2-5.6
	1	1.1-5.0
BLT-60A PM+	0.7	2.3-7.7	45	66±2	1723×960×1600	860	G11/2"	一
	0.8	2.2-7.0
	1	2.1-6.3
BLT-75A PM+	0.7	1.9-10.4	55	68±2	1920×1060×1600	1000	G2"	-
	0.8	1.8-9.8
	1	1.8-8.8
BLT-100A PM+	0.7	2.5-13.1	75	72±2	1920×1060×1600	1050	G2"	一
	0.8	2.4-12.8
	1	2.3-11.1
BLT-120A/W VFC	0.7	3.4-17.1	90	72±2	2260×1060×1600 (Air-cooled)	1650/2610	G2” (Air-cooled)	R11/4"
	0.8	3.4-17.0
	1	3.0-15.2			2557×1200×1600 (Water-cooled)		G11/2" (Water-cooled)
	1.3	2.5-12.5

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Geso Systems Vietnam Co., Ltd

Telephone:400-8850-919

Mobile Phone:0084 0396 499 508

Email:online-service@gesosystems.com

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