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Power Analyzer Accessories

Current Measurement

BDR01 Series Shunt

The BDR01 series shunt provides an accurate current sensing solution for current transducers/transformers outputting a current signal, the shunts feature BNC input and Output connectors.

The BDR01 is ideal for use in conjunction with current output transformers or zero flux based current sensing transducers such as the LEM IT and ITN series. The BDR01 extends the low current sensitivity significantly due to the higher shunt impedance, this is essential for current transducers with high “turns ratios”.

While the BDR 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, they can also be used as a precise current sensing device for other equipment.

ModelNominal ResistancePhase ErrorContinuous CurrentConnections
BDR011Ω ± 0.1%0.1° / kHz1ArmsSafety BNC
DatasheetBDR01 Datasheet (PDF, 161kb)

N4L HF Series Current Shunts

N4L Resistive Current Shunts provide the engineer with a wide range of current measurement options. the range spans from the 1Arms rated HF01A to the 500Arms HF500, the HF01A provides accurate current measurement down to 500uArms.

ModelCurrent rating
HF01A100uA → 1Arms
HF003200uA → 3Arms
HF0061mArms → 6Arms
HF02010mArms → 20Arms
HF100100mA → 100Arms
HF200200mA → 200Arms
HF500 500mA → 500Arms
DatasheetHF Shunts-PPA – Datasheet
HF 100/HF200 Fixing bolt guideHF100_200 Fixing Bolt Guide
HF500 Fixing bolt guideHF500 Fixing Bolt Guide V2
HF500 Thermal CharacteristicHF500 – Thermal Characteristic

N4L High Frequency Rogowski Current Transducers

Rogowski Current transducer for power measurement

N4L High Frequency Rogowski Current Transducers provide current measurement from 1A up to upwards of 30,000A depending upon the model selected. The two standard models in our range provide 1A → 5,000A(WR5000) and 2A → 10,000A(WR10000) dynamic measurement ranges.

ModelCurrent RatingDatasheetUser Manual
WR50001A -> 5000Arms WR5000 WR5000_WR10000 Manual 
WR100002A -> 10000Arms WR10000


LEM Zero Flux High Precision Current Transducers

N4L are pleased to offer the LEM range of Zero flux current measurement transducers, these current sensors based upon the Zero Flux measurement technique provide high accuracy current measurement up to 4,000Arms

ModelCurrent RatingDatasheet
IT60-S→ 60ADC / pk 42Arms IT 60-S
IT65-S *→ 85Apk 60Arms/DC IT 65-S
IN100-S→ 100Arms/DC / 150Apk IN 100S
IT200-S→ 200ADC / pk 141Arms IT 200-S
IN200-S→ 200Arms / DC 300Apk IN 200-S
IT205-S *→ 283Apk 200Arms/DC IT 205-S
IT400-S→ 400ADC / pk 282Arms IT 400-S
IN400-S→ 400Arms/DC 600Apk IN 400-S
IT405-S *→ 566Apk 400Arms/DC IT 405-S
IN500-S→ 500Arms/DC / 800Apk IN 500-S
IT600-S→ 600ADC / pk 425Arms IT 600-S
IT700-S→ 700ADC / pk 495Arms IT 700-S
IT1000-S→ 1000ADC / pk 707Arms IT 1000-S
IT605-S *→ 849Apk 600Arms/DC IT 605-S
ITN600-S→ 600ADC / pk 424Arms ITN 600-S
ITN900-S→ 900ADC / pk 636Arms ITN 900-S
ITN1000-S→ 1000ADC / pk 707Arms ITN 1000-S
IN1000-S→ 1500Apk 1000Arms/DC IN 1000-S
IN1200-S→ 1500Apk 1200Arms/DC IN 1200-S
IN2000-S→ 3000Apk 2000Arms/dc IN 2000-S
LF510-S→ 500Arms 0.6% AC+DC LF 510-S
LF1010-S→ 1000Arms 0.4% AC+DC LF 1010-S
LF2010-S→ 2000Arms 0.3% AC+DC LF 2010-S

These devices operate as current output transducers, voltage output transducers are available upon request

Models marked * are no longer available, datasheets are shown for reference.

Danisense High Precision Current Transducers

Danisense CTs range

N4L are pleased to offer the Danisense range of current measurement transducers, these current sensors offer high current accuracy up to 1MHz.

ModelCurrent RatingDatasheet
DS50ID→ 50Arms + 75Apk/DC Freq Bandwidth (±3dB) <1MHz DS50ID
DS200ID→ 200Arms + 300Apk/DC Freq Bandwidth (±3dB) <1MHz DS200ID
DS300ID→ 300Arms +5005Apk/DC Freq Bandwidth (±3dB) <1MHz
DS400ID→ 400Arms + 600Apk/DC Freq Bandwidth (±3dB) <300kHz
DS600ID→ 600Arms + 1000Apk/DC Freq Bandwidth (±3dB) <500kHz
DM1200ID→ 1200Arms + 1500Apk/DC Freq Bandwidth (±3dB) <300Hz
DL2000ID→ 2000Arms + 3000Apk/DC Freq Bandwidth (±3dB) <300kHz DL2000ID


Torque and Speed Grounding Module

torque and speed grounding module

PPA3500, PPA4500 and PPA5500 series power analyzers offer mechanical power
measurement via pulse count or analogue signals from Torque and Speed transducers.
The Torque and Speed inputs on PPA35/45/5500 instruments are differential with a
high impedance to ground, which is suitable for transducers that are also differential.
However, for certain sensors and applications it may be beneficial to use a single
ended input, where the outer of the BNC is grounded.
Grounding can be achieved with crocodile connectors clipped onto to the BNC
connectors, but this can be unreliable, so the Torque and Speed Grounding Module
provides a much safer and more reliable solution.

Torque and Speed Grounding Module Torque and Speed Grounding Module – Datasheet

LEM Interfaces and Power Modules

50W LEM Transducer Power Module

The LEM interfaces and Power modules, designed by N4L in cooperation with LEM Switzerland offer a convenient and reliable connection method between the PPA Power Analyzers and the LEM current transducers.

There are three types of interface kit, the LEM-1, LEM LF and the LEM6(featuring integrated power modules). We also offer two external power modules for use with the LEM-1 interface.

To understand more, please see our overview document below;

Current Transformer Interface Options.pdf

LEM-1 120W PSU120W PSU compatible with IN/IT/ITN/LF Series TransducersLEM-1 Interface kit
LEM-1 50W PSU50W PSU compatible with IN/IT/ITN/LF Series Transducers
LEM-1 IT/ITN/IN Series Interface kitInterface Kit including LEM-1 and associated cabling
LEM LF Series Interface kitLF Series Interface Kit including PSU and connection cablingLEM LF Series Interface kit
LEM-6 1-6 Channel LEM CT Interface System (Compatible with IT/ITN/IN/LF Transducers)LEM-6 Interface PDF – Datasheet

AC+DC Current Clamps

1000A AC + DC Current clamp

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.

ModelCurrent RatingDatasheet
SC-2C-1001 → 100ASC 2C 100A - 1V -
SC-3C-10001 → 1,000ASC 3C 1000A - 1V
P20-3C-200040 → 1,000/2,000AP20 3C 2000A - 2V
P40-3C-400040 → 2,000/4,000AP40 3C 4000A – 2V
P50-3C-500050 → 2,000/5,000AP50 3C 5000A - 2V

Other models available upon request

AC Current Clamps

1000Arms AC Current Clamp

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.

ModelCurrent RatingDatasheet
M3-UB-50100mA → 50AM3 UB 50 – 1V
M3-U-1001 → 100AM3 U 100 – 1V
S-UE-2001 → 200AS UE 200 – 1V
S-UE-2501 → 250/500/1000AS UE 250 500 1000
US-UE-10001 → 1,000AUS UE 1000 - 1V
SM-UE-10000.5 → 1,000ASM UE 1000 - 1V
SM-UB-10000.5 → 1,000ASM UB 1000 - 1V
P32-UE-10005 → 1,000AP32 UE 1000 - 1V
P32-UE-30005 → 3,000AP32 UE 3000 - 1V

LSF Series Filters (Low Pass)

N4L LSF Filters are a range of filters specifically designed for use with the N4L range of HF current shunts as well as other high noise applications.
Available as 5 kHz low pass and 50 kHz low pass for improved signal to noise ratio, these compact filters are fitted with safety BNC connectors to enable direct connection to the PPA external inputs.

Model Roll-off Frequency (3dB)Datasheet
LSF05-3dB@ 5kHz ± 1kHzLSF Filters
LSF50-3dB@ 50kHz ± 10kHz

Voltage Measurement

3 Phase Voltage Interface

The 3 Phase Voltage Interface is designed for use with PPA series power analyzers in applications where high speed switching events may be outside the instrument frequency range.

By suppressing frequency components outside the measurement band, this accessory provides a simple solution to instability that can be caused by high dV/dt voltage switching components..

Fitted with touchproof 4mm connectors, the interface provides a convenient way to terminate voltage lines from a device under test then connect to a PPA analyzer in either 3 Phase 2 Wattmeter (Delta) or 2 Phase 3 Wattmeter (Star) configuration, with internal filters to limit unwanted high frequency components.

Voltage Rating1000V CAT II
Source Connections3 Phase 3 wire or 4 wire
PPA connections3 Phase 2 wattmeter or 3 Phase 3 wattmeter
Frequency response-3dB @ 1.7MHz
Connectors4mm touchproof safety
Box typeABS Plastic
Dimensions (mm)110W, 85H, 38D
Datasheet3 Ph Voltage Interface - Data Sheet PDF, 209kb

TT-HV-250 High Voltage Probe (2.5kVpk)

2500Vpk voltage probe

Although N4Lpower analyzers feature 3000Vpk (PPA4500 and PPA5500) and 2500Vpk (PPA500 and PPA1500) voltage inputs, a particularly useful feature of all N4L power analyzers is the 3Vpk BNC inputs situated on both the voltage and current channels. This results in the ability to measure 6 x high voltage signals (with attenuators on external inputs) on a 3 Phase instrument, in this case the three current channel “External Inputs” could be used to measure a voltage via an input attenuator such as the TT-HV250.

Voltage RatingAttenuationBandwidthSpecification Data
2.5kVpk100:1300MHz2.5KV High Voltage Probe x100 - Datasheet

TT-HVP-15HF High Voltage Probe (15kVpk, 10kVrms)

15kVpk 10kVrms) voltage probe

The TTV-HVP-15HF High Voltage Probes allows any of our power analyzers to be connected to signals up to 15kV, this is particularly useful for voltage measurement of power line applications, the high voltage probes is connected to the power analyzer via the Vext BNC connection on the instrument, the probe is then enabled in the RANGE menu of the power analyzer.

Voltage RatingAttenuationBandwidthSpecification Data
15kVpk, 10kVrms1000:150MHz15KV High Voltage Probe x1000 - Datasheet

ULCP Ultra Low Capacitance Probe

3kV peak ultra low capacitance probe

The ULCP ultra low capacitance probe is intended for voltage measurement of devices which are particularly sensitive to capacitive loading. This is particularly useful when measuring start up characteristics of low power lighting ballasts, the ULCP Ultra Low Capacitance Probe utilizes a differential input design that provides a capacitance to ground of 1pF.

Voltage RatingAttenuationBandwidthSpecification Data
3kVpk, 1kVrms1000:12MHzULCP - Datasheet

HVDP High Voltage Probe (8kVpk / 5.6kVrms)

HVDP High Voltage Differential probe rated to 5.6kVrms 8kVpk

The HVDP high voltage differential probe is a reliable and accurate voltage sensing device designed to maintain a precise attenuation value over a wide frequency range. The active circuitry provides a low impedance output which does not need to be trimmed to adjust to the characteristics of the measurement input.

Supplied with 12V 15W International power supply

1m Unterminated HV input leads

2m BNC-BNC cable

Voltage RatingAttenuationBandwidthSpecification Data
8kVpk, 5.6kVrms3000:1100kHzHVDP-8K probe User Guide

Test Device Interfaces

Spare N4L PPA Voltage Connection Lead Set (Supplied as standard with every instrument)

Power analyzer lead set

All N4L Power Analyzers are supplied with the necessary voltage and current connection leads in order to make measurements “out of the box”. It may be the case that the supplied lead set has been damaged/gone missing, in these situations it is possible to order a replacement lead set.

ModelLengthCurrent Rating (If used for current measurement)

Other lead lengths available upon request

Single Phase 10Arms Breakout Box

power analyzer breakout box

Simplifying the analysis of input power to an AC-mains powered device, our Universal Breakout Box offers the safe and convenient connection of any PPA series power analyzer to the input of any single phase DUT consuming up to 10Arms. Fitted with an IEC inlet connector and universal shuttered outlet socket to accommodate a wide range of international power plugs, this accessory can be used by engineers anywhere. Clear labeling of the power measurement connection terminals guides a user to select the optimum voltage connection point for any device under test.

Current RatingVoltage RatingBreakout ConnectorsSpecification Data
10Arms265Vrms4mm SafetyBreak out Box - Datasheet

19in Rack Mount Kits

PPA35/45/55xx Rack Mount Kit

power analyzer rack mount kit

The PPA3500/4500/5500 rack mount kit consists of two 19in rack mounting brackets providing simple integration into any EIA standard 19in rack system. The brackets are fitted to the Power Analyzer by removing the two handle fixtures situated on each side of the power analyser. (PPA45/55xx depicted in image)

PPA45/55xx4UEIA Standard
PPA35xx2UEIA Standard

PPA5/15xx Rack Mount kit

At only 2U high, the PPA500 and PPA1500 power analyzers offer exceptional accuracy at this form factor. The PPA500/PPA1500 rack mount kit provides the ability to perform 6 phase 0.1% accurate power measurement whilst only occupying a height of 2U in any rack. This level of accuracy is not available from any other manufacturer at this form factor*.

HeightComplianceSpecification Data
2UEIA StandardPPA 15xx Rack Mounting Kit - Datasheet

*according to N4L market research July 2014


Torque and Speed Isolation

power analyzer torque and speed isolator

The PPA4500/5500 feature torque and speed inputs fitted as standard, both inputs are ground referenced and in certain circumstances where grounding is an issue an isolated torque and speed input is required.

Max InputAttenuationBandwidth

ATT Series Attenuators

ATT Series Attenuator

The ATT10, ATT20 and ATT1000 are BNC to BNC voltage attenuators designed for the PPA Vext and Aext inputs. They provide high accuracy wide bandwidth gain, typical applications are in situations when the output of a voltage attenuator (such as the TT-HV250) is above the 3Vpk range of the voltage channel external input.

ModelAttenuationBandwidthMax Input VoltageSpecification Data
ATT1010:1DC-2MHz30VpkATT10 - Datasheet
ATT2020:1DC-2MHz60VpkATT20 - Datasheet
ATT10001000:1DC-10kHz1000VrmsContact us for information

Extension Port accessories

PCIS Phase Controlled Inrush Switch

phase controlled inrush switch

The Phase Controlled Inrush Switch provides the engineer with the ability to “program” the phase angle of the input power waveform at which power is applied to any DUT. The PCIS allows the user to pre program 0º, 45º, 90º, 135º, 180º, 225º, 270º and 315º. This function is particularly useful when testing the inrush current of a device which is either inductive or capacitive, allowing “worst case” phase angles to be applied to the device under test. The PCIS is only suitable for use with a supply frequency of 50-60Hz. Use with higher frequencies may damage the unit.

Max VoltageMax CurrentV/I ConnectionSpecification Data
240Vrms10Arms(300Apk)4mm safety PCIS Datasheet

Communication Accessories

GPIB515 GPIB Interface for N4L PPA Range

gpib interface for ppa power analyzers

The GPIB515 Accessory makes a GPIB link available to the PPA500 and PPA1500 Instrument range, this is achieved through a serial link to the PPA that handles all necessary status lines and registers for IEEE488 Communication.

MaterialDimensions (mm)Specification Data
ABS Plastic – Black134.87 x 85.09 x 38.10GPIB515 Datasheet

CAN-Port CANBUS Interface

CANBUS interface for power analyzers

The CAN-port unit is designed as an interface between a CAN network and a Newtons4th PPA series Power Analyzer. The unit receives commands from the CAN network or via serial (RS232) and then processes these commands and controls and instructs the PPA; responses from the PPA are reformatted and split into multiple messages and placed onto the CAN network.

MaterialDimensions (mm)Specification Data
ABS Plastic – Grey130 x 82 x 44PPA CAN-PORT Comms Manual V2.0

Carry Cases

PPA500/1500 Carry Case

The N4L PPA500/PPA1500 Aluminium carry cases offer ruggedness in a lightweight package, providing the engineer with the ability to transport the Power Analyzer via freight or an aircraft hold. The Aluminium design offers protection whilst the CNC machined foam inserts secure the instrument in place.