HHS 5206-8, DC - 800 kHz, Circular Helmholtz Coils

Circular Helmholtz Coils

Precisely defined magnetic fields. DC - 800 kHz.

The Schwarzbeck HHS 5206-8 generates defined magnetic fields from DC to 800 kHz. Its 8-turn coils provide a calculable relationship between drive current and magnetic field strength.

PARTNER:

SCHWARZBECK MESS-ELEKTRONIK

MARKETS:

RF ,

CATEGORIES:

TEST STANDARDS:

MIL-STD-461 ,

Data Sheet

NFCN 9732 85 kHz - Compensation Network

SPECIFICATIONS

DC - 800 kHz

Usable frequency range

34 AContinuous nominal coil current

8 turnsPer coil

Defined by geometry

A calculable field.
A traceable measurement.

Magnetic field strength is proportional to coil current. Coil geometry, the number of turns and the applied current determine the resulting field, allowing the field measurement to be traced to a current measurement or the voltage drop across a known resistor.

The field depends on coil spacing and the position within the test volume. Use the reference spacings in the specifications and the field distribution data in the datasheet when selecting your setup.

Plan your test setup

Match the field to your application.

Continuous operation

The nominal coil current is 34 A continuous. The specified nominal magnetic field is 650 A/m continuous. Field values apply at the stated reference spacing.

Short-duration operation

The maximum coil current is 55 A (5 min.). Observe the stated time limit and provide adequate ventilation. The frequency range alone does not imply that maximum current or field is available at every frequency.

Technical details

Specifications

Product specifications with reference conditions. See the linked manufacturer datasheet for complete field distributions and operating guidance.

View the complete datasheet →

Number of turns	8
Maximum Coil Current	55 A (5 min.)
Nominal Coil Current	34 A continuous
Coil Spacings (centered)	300 mm
Max. Magn. Field Strength	1060 A/m (5 min.)
Nominal Magn. Field Strength	650 A/m continuous
Magn. Field Strength, 1 A Coil Current	19.23 A/m; 145.68 dBµA/m
Coil Diameter	588 mm
Max. Cubical shaped DuT	32.5 x 32.5 x 32.5 cm
Mechanical Dimensions	0.64 m x 0.79 m x 0.42 m
Terminals	4 mm female
Inductance (Single Coil)	91 µH
Inductance (Coil Pair)	200 µH
Usable Frequency Range	DC - 800 kHz
Resonance Frequency	> 1500 kHz
Weight	17.0 kg
Recommended accessories	NFCN 9732 85 kHz
Reference spacing for field values	300 mm

Where specified, coil distances refer to the coil centers. Continuous and short-duration limits are listed separately. Standards references retain the designations used in the source documents.

NFCN 9732 85 kHz - Compensation Network

The compensation network NFCN 9732 85 kHz consists of a high-current, high-voltage variable capacitor.

The compensation capacitor reduces the total impedance of the series circuitry consisting of the Helmholtz coil HHS 5206-8 and the NFCN 9732 85 kHz at the operating frequency band of 80-90 kHz. It allows continuous currents of up to 15 A_rms at generator voltages of less than 40 V_rms.

Application: Immunity test, inductive changing 85 kHz

Installation and operating safety

Read the supplied datasheet before use. Switch off the complete system before making or removing connections and do not touch terminals during operation. Observe all voltage, current and time limits. High currents heat the coils; maintain adequate air circulation. Keep unintended magnetic field sources and magnetic materials away from the test volume.

North American sales