HF Series – Current Shunts – N4L

Test and Measurement

The HF series shunts provide an accurate current sensing solution for many wideband power measurement applications up to 500Arms, the shunts are supplied with a 2m safety BNC lead.

Utilising an innovative design unique to N4L that exhibits exceptionally low parasitic inductance, each shunt will maintain its specified resistance over a frequency range from DC to 1MHz without exhibiting the phase shift that is normally associated with high current resistive shunts.

While the HF series was primarily designed for use with the PPA series power analyzers from N4L that provide exceptional wideband accuracy, dynamic range and common mode rejection, the HF series can be used as a precise current sensing device for other equipment.

Model

Nominal Resistance

Continuous Current

PPA typical min Current 

Input Connector

HF500

0.2mΩ 

500Arms

0.5Arms

M16 bolt/lug

HF200

0.5mΩ 

200Arms

0.2Arms

M10 bolt

HF100

1mΩ 

100Arms

0.1Arms

M10 bolt

HF020

10mΩ 

20Arms

10mArms

4mm socket

HF006

100mΩ 

6Arms

1mArms

4mm socket

HF003

470mΩ 

3Arms

0.2mArms

4mm socket

HF01A

1Ω 

1.5Arms

0.1mArms

4mm socket

High Frequency Rogowski Current Transducers

AC sensing Rogowski current transducer designed for use with the PPA range Precision Power Analyser, enabling high frequency high accuracy current measurement.

Model

Measuring range

Frequency Range

Output Signal

oSpecificationo Data

WR5000

1A to 5kA

1Hz to 1MHz

1A=2mV/0.4mV

 

WR10000

100kW / 125 kVA

0-120V L-N / 208V L-L

350Arms / Phase

 
LEM High Accuracy Zero Flux Current Transducers

For ultra-high precision measurement of current: DC,AC,pulsed…, with galvanic separation between primary and secondary.

Features:

  • Closed loop (compensated) current transducer using an extremely accurate zero flux detector.
  • Electrostatic shield between primary and secondary circuit
  • 9-pin D-Sub male secondary connector
  • Optically insulated output (photocoupler type) indicates transducer state
  • LED indicator confirms normal operation.
Model
Current Rating
Specification Data
LEM IT60-S  
→ 60Adc/ pk 42Arms
LEM IT200-S  
→ 200Adc / pk 141Arms
LEM IT400-S  
→ 400Adc / pk 282Arms
LEM IT700-S  
 → 700Adc / pk 495Arms   
LEM IT1000-S/SP1  
→ 1000Adc / pk 707Arms   
LEM ITN600-S  
→ 600Adc / pk 424Arms
LEM ITN900-S  
→ 900Adc / pk 636Arms
LEM ITN1000-S  
→ 1000Adc / pk 707Arms   

Danisense High Accuracy Zero Flux Current Transducers

The Danisense range of Zero flux current measurement transducers, these current sensors based upon the Zero Flux measurement technique provide high accuracy current measurement up to 2,000Arms

Model
Current Rating
Specification Data 
Danisense DS200

 

→ 200Arms
Danisense DS600

 

→ 600Arms
Danisense DS2000

 

→ 2000Arms
Danisense DSSIU-4

 

4 Channel Interface Unit

AC+DC Current Clamps

Our AC+DC Current Clamp range provide current measurement up to 5,000A (P50-3C) with an upper bandwidth of 5kHz (SC3C), these current clamps offer a convenient method of measurement for applications where the DC component of a signal is of particular interest. For example, these clamps are ideally suited to measurement of the DC bus in an inverter drive.

Model Current Rating Specification Data
SC-2C-100
1 → 100A
SC-3C-1000
1 → 1000A
P20-3C-2000
40 → 1000/2000A
P40-3C-4000
40 → 2000/4000A
P50-3C-5000
50 → 2000/5000A

AC Current Clamps

Our AC Current Clamp range provide current measurement up to 3,000A (P32-UE) with an upper bandwidth of 15kHz (SMUB), these current clamps offer an accurate measurement of an AC signal over a wide bandwidth. Typical applications include PWM Invert Driver output power measurement, transformer loss testing and a range of other AC applications. The wideband response of these current clamps is very flat well beyond the stated frequency range, these AC current clamps offer an ideal solution where cost and convenience must be accompanied with sufficient accuracy.

Model
Current Rating
Specification Data
M3-UB-50
100mA → 50A
M3-U-100  1 → 100A
S-UE-200 1 → 200A
S-UE-250 1 → 250/500/1000A
US-UE-1000 1 →
SM-UE-1000 0,5 → 1000A
SM-UB-1000 0,5 → 1000A
P32-UE-1000
5 → 1000A
P32-UE-3000
5 → 3000A