Wayne Kerr 3265B DC Bias Unit, 25A

WAYNE KERR 3265B

The Wayne Kerr 3265B DC Bias Unit is an essential instrument designed to enhance the functionality of the Wayne Kerr 3255B series Inductance Analyzers and the 3260B Precision Magnetics Analyzer. This specialized unit allows for extensive evaluation of components, handling DC bias currents soaring up to 125A. With the capability of connecting multiple units, one 3265B can set a DC bias current up to 25 A in precise steps of 25 mA. Link up to five units in parallel for maximum performance, achieving a substantial 125 A DC current.

Key Features

• Enhances usability when paired with:
• Wayne Kerr 3255B Series of Inductance Analyzers
• Wayne Kerr 3260B Precision Magnetics Analyzer
• Adjustable DC bias current from 25 mA to 125 A in increments of 25 mA.
• Equipped with a DC Bias Fixture model 1009 for precise and safe testing of SMD inductors.
• Significantly boosts measurement capabilities and overall functionality.

Technical Specifications

The Wayne Kerr 3265B is designed to work seamlessly with the following analyzers: 3260B, 3255BL, 3255B, or 3255BQ.

Compliance Voltage

• Maximum compliance voltage: 10 V at 1 V AC drive level. For frequencies greater than 12 kHz, deduct 0.5 V.

Applications

• Facilitates measurement analysis of wound components under higher DC bias currents surpassing the standard 1A.

Variable Measured

• Impedance mode measurements include: L, Z, R, Q, D.
• Not applicable for Rdc or transformer measurements.

Measured Frequency Range

• 3255BL: 20 Hz to 200 kHz (for 3265B/5A or 3265B10A only)
• 3255B: 20 Hz to 500 kHz
• 3255BQ: 20 Hz to 1 MHz
• 3260B: 20 Hz to 3 MHz (with 3265BQ/25A)

Basic Accuracy

• ± 1%, varies with measurement speed, frequency, and selected options.

Measurement Terminals

• 2-terminal measurement using M8 studs.
• 4-terminal measurement through Kelvin leads and M8 studs.
• Measurement terminals are safeguarded by 1.6A fuses against inductor back-EMF or accidental disconnection.
• Easy front panel fuse replacement is available.

Control Connections

• I²C bus link for DC current application control and analyzer status monitoring, including excessive voltage drop and over-temperature alerts.

Optional Facilities

• Multiple 3265B bias units can be connected in parallel for cumulative current output.

Interlock

• Bias safety interlock socket on the rear panel provides lock control for doors and connection lines.

Temperature Range

• Storage Temperature: -40°C to 70°C
• Operating Temperature: 0°C to 40°C at 20 A (for 3265BQ/25A and 3265B/25A)
• Full Accuracy Range: 15°C to 30°C at maximum rated current.

Power Supply

• Universal AC range: 90 to 255 V, frequency: 47 to 63 Hz
• Maximum input current: 9 A rms.
• Power factor greater than 0.9.
• Unit activates automatically upon connection to a powered analyzer, includes an isolating switch.