SW 9600 B2, 1 kHz–420 MHz, Bulk Current Injection Clamp

Bulk Current Injection Clamp

Inject disturbance currents into cables and cable bundles for conducted immunity testing.

The Schwarzbeck SW 9600 B2 covers 1 kHz–420 MHz and supports up to 30 W CW RF input. Its split-core design accepts cables up to 31 mm in diameter, connects through a 50-ohm N-female interface, and includes individual transfer-impedance calibration data.

SW 9600 B2 Datasheet

SPECIFICATIONS
1 kHz–420 MHzUsable frequency range
30 W CWMaximum RF input power
31 mmMaximum cable diameter
Product overview

Designed for BCI immunity setups

50 Ω RF connection

A female N connector interfaces to coaxial 50 Ω equipment. The clamp has a 32 mm aperture and accepts line diameters up to 31 mm.

Individual calibration

Each unit is supplied with individually measured transfer-impedance data. The curves below show published datasheet characteristics; use the supplied unit data for a specific measurement.

Standards applications

The manufacturer identifies ISO 11452-4, RTCA DO-160 and IEC/EN 61000-4-6 as examples of standards describing immunity testing with current clamps.

Application details

Understand the limits

RF power versus line current

The 30 W CW limit applies to RF power entering the clamp. The approximately 300 A rating applies to current in the enclosed conductor at DC to 400 Hz; it is not an injected RF-current specification.

Coupling depends on the loop

The datasheet compares transmission for 100 Ω and 300 Ω loop impedances. The resulting injected current depends on the test circuit, so the transfer curve alone is not a guaranteed current level.

Calibration fixture

The optional CF 9651 is designed for transfer-impedance and insertion-impedance measurements with SW 9600 Bx and SW 9601 Ax clamps.

Connection overview

See where it fits.

01RF generator / amplifier
02N-female RF input
03SW 9600 B2 around cable
04Disturbance current in test loop

The clamp couples the RF signal inductively. The 100 Ω and 300 Ω transmission curves below illustrate the influence of loop impedance.

Technical data

SW 9600 B2 specifications

Ratings, connectors and mechanical details consolidated from the manufacturer’s product page and Rev. A datasheet.

Read the full datasheet
Usable frequency range 1 kHz–420 MHz
RF connector N female; 50 Ω system
Typical transfer impedance at 8 kHz −20 dBΩ
Typical transfer impedance at 80 kHz 0 dBΩ
Typical transfer impedance at 1 MHz 15 dBΩ
Typical transfer impedance at 30–400 MHz 25 dBΩ
Maximum RF input power 30 W CW
Maximum conductor current Approximately 300 A, DC–400 Hz
Transformation ratio 1:2
Primary inductance Typical 3.7 µH at 100 kHz
Maximum line diameter 31 mm
Aperture 32 mm
Dimensions 104 × 45 × 79 mm
Weight Approximately 600 g
Calibration data Individual transfer-impedance data supplied
Optional calibration fixture CF 9651
Original manufacturer figures

Performance curves

Extracted from the datasheet with axes, legends and limit lines intact. Typical curves characterize the device; use the stated specifications and unit calibration where applicable.

Construction & application

Photos, details and test setups

Original figures extracted from the associated datasheet. Open any image to inspect the full-size figure.

Practical questions

Before you specify the product

Is the SW 9600 B2 an injection or monitoring clamp?

It is designed primarily to inject disturbance current for BCI immunity tests. The SW 9601 A2 is the related RF current-measurement clamp.

Are the published transfer curves my unit’s calibration?

No. The curves show published reference characteristics. Each clamp is delivered with its own transfer-impedance calibration data.

Build the setup

Related products

Configure the test system

Components and supporting equipment

  • Included: SW 9600 B2 bulk current injection clamp and individual transfer-impedance calibration data.
  • Optional calibration accessory: CF 9651 current-clamp calibration fixture.
  • Supporting equipment, selected separately: a suitable RF generator/amplifier, 50-ohm coaxial cable with compatible N connection, and the monitoring and calibration equipment required by the chosen test method.
  • Related monitoring clamp: SW 9601 A2 for RF disturbance-current measurements. Confirm the complete configuration 
 
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