Frequency Changer

Browse 200 global buying requests and sourcing opportunities.
  • We are seeking a 640kVA diesel generator set with the following specifications:

    Main parameters:
    - Prime power: 570kVA/456kW
    - Standby power: 640kVA/512kW
    - V-12 turbocharged engine with ≤26.6L displacement
    - Fuel consumption: ≤124L/h (100% load), ≤95L/h (75% load), ≤64L/h (50% load)
    - System capacities: 59L oil, 120L coolant, 1120L fuel tank

    Alternator requirements:
    - 400/230V 50Hz 3-phase brushless design
    - H-class insulation and IP23 protection
    - AVR voltage regulation with ±1% accuracy
    - 110% overload capacity for 1 hour

    Control panel must include:
    - Manual/automatic operation modes
    - ATS and automatic load sharing
    - Under-frequency protection
    - Emergency stop function

    Essential configuration:
    - Soundproof canopy
    - Automatic battery charger
    - Fuel tank heater
    - Lockable fuel filler cap
    - Complete cable set

    Please provide technical compliance confirmation with your quotation.

    Kazakhstan Kazakhstan
    Posted at: 2025-09-26 14:40:03
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  • Looking to source portable radios model KK-8108T with multi-band coverage including FM/AM/SW frequencies. Require wholesale pricing and MOQ details for bulk orders to India market. Confirm availability of sample units for quality testing before finalizing order. Specify warranty terms and compatible power sources (battery/AC).

    India India
    Posted at: 2025-09-25 20:37:13
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  • Looking for LED ballast with specific model VDS 24100d0242.  
    Required specifications:  
    - AC input voltage 100-240V  
    - Frequency 50/60 Hz  

    Please confirm availability and provide pricing details.  
    Need reliable supplier capable of delivering to Quebec region.

    Canada Canada
    Posted at: 2025-09-25 01:47:26
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  • Seeking 5 units of power transducers with the following specifications:
    - Accuracy Class 0.5
    - Nominal Voltage 100-400V
    - Nominal Current 1-5A
    - Aux. Supply 80-260V AC/DC
    - Operating temperature range: -10°C to 70°C
    - Din Rail mounting
    - Minimum 4 analogue output channels (V/mA)
    - Required measurement parameters: phase voltage, delta voltage, frequency, line/neutral current, active power measurements

    Delivery timeframe required within 1-2 weeks. Please provide product certifications and compliance details.

    Zimbabwe Zimbabwe
    Posted at: 2025-09-23 18:30:06
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  • Looking to purchase 4 units of High Efficiency Floating Surface Aerators model SAR-340 for wastewater treatment. Requirement includes 50Hz operation frequency. Please provide best offer and delivery details.

    United States United States
    Posted at: 2025-09-23 09:40:03
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  • We need to purchase Emerson Commander SK series variable frequency drives (Model SK5401) with the following specifications:
    ? Power Rating: 100 HP
    ? Input Voltage Range: 342-528 VAC
    ? Maximum Frequency: 550 Hz
    ? Output Current: 124 A

    Please provide your best quotation with detailed technical documentation. Indicate available stock quantity and lead time for production if not in stock. Quality must match original manufacturer specifications.

    Saudi Arabia Saudi Arabia
    Posted at: 2025-09-20 18:35:49
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  • I require 1 unit of ultrasound testing machine with these specifications:
    - Pulse shift range: -20 to 999.9
    - Frequency range: 0.5 to 20MHz
    - TFT color display
    - Storage capacity for 100 parameters
    - Adjustable sound speed: 1000 to 15000 m/s
    - Gain range: 130dB

    Immediate delivery preferred. Please provide your best offer.

    Zimbabwe Zimbabwe
    Posted at: 2025-09-19 16:40:28
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  • Looking for suppliers of 8009 series radio frequency point to point meter reading solutions. Please provide product specifications and pricing details. Interested in reliable communication solutions for remote meter reading applications.

    New Zealand New Zealand
    Posted at: 2025-09-19 07:30:48
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  • Looking to purchase 1 unit of gear motor reducer with specifications:  
    - 110VAC voltage  
    - 20W power rating  
    - 50/60Hz frequency  
    - 1:40 gear ratio  
    - Model YN70-2070JB40G10  

    Please provide best price with delivery timeline. No rush order required.  
    Prefer direct manufacturer quotations.  
    No intermediaries please.

    India India
    Posted at: 2025-09-17 20:00:03
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  • Urgently require 3-phase thyristor firing card for industrial motor control application. Specifications needed:
    - Operating voltage: 380V
    - Frequency: 50Hz
    - Power capacity: 300KW DC motor control
    Must comply with power plant rectifier system requirements. Please provide technical specifications and lead time details.

    Sri Lanka Sri Lanka
    Posted at: 2025-09-16 16:00:02
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  • I require RF modules and RF power amplifiers with specific technical parameters:  

    For RF Modules:  
    - 50W output power  
    - Frequency ranges: 1.5GHz (1550-1620MHz), 2.4GHz (2400-2500MHz), 5.8GHz (5725-5875MHz)  
    - SMA connectors, 50 ohms impedance  
    - 24VDC power supply  
    - Compact dimensions (15×12×6cm) and 1.2kg weight  

    For RF Power Amplifiers:  
    - 50W output capacity  
    - Matching frequency bands to corresponding modules  
    - SMA connectivity  
    - 24VDC input  

    Need 1 unit for each frequency variant in both categories.  
    Please provide technical compliance confirmation and commercial proposal.

    Brazil Brazil
    Posted at: 2025-09-15 08:10:21
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  • I am seeking a replacement for the discontinued TYT UV-3R ham radio. The TYT TH-2R model appears to meet my requirements as a compact two-way communication device. Please confirm if this unit supports both VHF and UHF frequencies for professional FM use.  

    I need to verify shipping availability to Malta, Europe. Kindly provide essential product specifications and compliance certifications to ensure suitability for my intended application.

    Malta Malta
    Posted at: 2025-09-13 22:50:06
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  • We require frequency converters for our electrical testing laboratory to stabilize power sources. The specifications are:
    - 3-phase system with Delta input and Wye output (4-wire configuration)
    - Input/Output frequency: 50Hz
    - Input voltage range: 0-440V, Output voltage range: 0-440V/220V
    - Required capacities: 15KVA, 20KVA, 25KVA and 30KVA models
    - Must handle inductive loads from electrical testing equipment
    - Pure sine wave output with THD<3%
    - Compliance with IEC standards for voltage/frequency tolerance
    - Certification needed for ISO/IEC 17025 laboratory accreditation

    No existing VFD installations in our system. Please provide technical specifications and certifications with quotation.

    Pakistan Pakistan
    Posted at: 2025-09-12 18:29:30
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  • I need to purchase a 20 HP agitator assembly with specific components:
    1. Motor: Explosion-proof (XP) rated, 460/380V dual voltage, 60/50Hz frequency, 1800/1500 RPM speed, 55°C continuous duty.
    2. Gearbox: PB143 model with 30:1 reduction ratio, compatible with 256TC NEMA input flange.
    3. Shaft: Full assembly including shaft components.

    Please provide pricing and lead time details for this configuration. Technical specifications must strictly match the listed requirements.

    India India
    Posted at: 2025-09-11 12:19:17
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  • I need to purchase 1 unit of GPS disciplined oscillator for product testing purposes. The device must support 10Mhz frequency output with 1PPS synchronization capability, capable of generating both square and sine wave signals. Required delivery timeframe is approximately one month after order confirmation. Please provide your best offer.

    Spain Spain
    Posted at: 2025-09-08 21:10:04
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  • Looking for Centrifugal Fan (Model: CF-2A) with the following specifications:
    - Voltage: 220 AC
    - Power: 1.1 kW
    - Frequency: 50 Hz
    - Air Volume: 1248-2258 m3/h
    - Speed: 2800 RPM

    Need 1 unit. Please provide your best offer.

    Mongolia Mongolia
    Posted at: 2025-09-08 14:50:05
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  • Seeking an ultrasonic cleaning device specifically designed for deep water well maintenance. The device must:
    1. Operate at 20-40 kHz frequency range
    2. Withstand depths up to 200 meters (20 bar pressure)
    3. Feature a compact design with maximum 160mm diameter head
    4. Utilize ultrasound technology to remove suspended solids in water filtration zones
    5. Be compatible with electric cable deployment

    Require shipment to Poland for operational testing. Please confirm technical specifications and compliance with EU standards.

    Poland Poland
    Posted at: 2025-09-07 15:20:03
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  • We are a national distributor of medical devices and orthopedic products seeking to expand our product range. Currently interested in procuring Darsonval (high frequency) devices.  

    Please provide:  
    1. Detailed quotation for your best-selling models  
    2. Product specifications matching the performance characteristics shown in the attached reference link  
    3. Full cooperation terms including payment methods, production lead times, and warranty coverage.  

    We require devices meeting European medical standards with certification documentation.

    Ukraine Ukraine
    Posted at: 2025-09-05 22:23:35
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  • We are seeking substitute products equivalent to Thales triodes ITK60-2 and ITK120-2 for high-frequency welding and induction heating applications.  
    The replacement components must maintain equivalent performance specifications to ensure compatibility with existing systems.  
    Please provide technical details and certification documentation for verification.

    Algeria Algeria
    Posted at: 2025-09-05 21:10:08
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  • Seeking 18-inch neodymium low frequency speakers with 2000W RMS power and 6-inch voice coils.  
    Required frequency range: 30-200Hz.  
    Order quantity: Minimum 4-8 pieces.  
    Delivery destination: Paramaribo, Suriname (South America).  
    Target delivery timeframe: December.  
    Open to various technical specifications within stated parameters.

    Suriname Suriname
    Posted at: 2025-09-04 02:00:03
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  • We require industrial-grade Automatic Transfer Switches with specific electrical ratings:  
    - 900 Amps capacity  
    - 480 VAC voltage  
    - 60 Hz frequency  
    - 3 phase configuration  
    - 4 wire system  

    Please confirm manufacturing capability for this specification. Strict compliance with all stated parameters is essential.

    United States United States
    Posted at: 2025-09-03 20:14:21
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  • Seeking detailed specifications for Evidential Breath Testing (EBT) Devices and Quick Check Alcohol Detectors model TP07. Require information on pricing structure, calibration frequency requirements, and measurement accuracy parameters. Please provide technical documentation or manufacturer specifications to verify compliance with international testing standards.

    Nepal Nepal
    Posted at: 2025-09-03 13:40:03
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  • Looking for portable radio with FM, TV, MW, SW and 10 band reception. Require basic model with multi-band functionality. Interested in portable radios capable of receiving multiple frequency bands.

    India India
    Posted at: 2025-08-31 14:40:03
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  • Require 20kVA brushless synchronous alternator equivalent to Stamford PI144D specification:
    ? Prime power: 20kVA continuous
    ? 50Hz frequency with 400/220V 3-phase output
    ? 1500 rpm operation (4-pole design)
    ? Must include H-class insulation and IP23 protection
    ? Single bearing configuration required
    ? Mandatory AVR system and copper windings
    ? CE/ISO certifications essential

    Please provide:
    1. Technical datasheet with model details
    2. Lead time and MOQ
    3. EXW/FOB pricing
    4. Unit weight specification

    Luxembourg Luxembourg
    Posted at: 2025-08-30 12:40:03
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