Fluke 435-II Power Quality Analyzer

Fits three-phase power quality surveys and troubleshooting that need IEC 61000-4-30 Class A logging (435-II / 437-II class) with 1–1000 V phase-to-neutral coverage and CAT III 1000 V / CAT IV 600 V safety rating.

Key advantages

IEC 61000-4-30 Class A — 435-II / 437-II Class A logging (Class S on 434-II).
1–1000 V coverage — phase-to-neutral with typical Class A voltage accuracy ±0.1% of nominal.
Transient + PowerWave — automatic transient to 6 kV @ 200 kHz; half-cycle RMS PowerWave capture.
CAT III 1000 V / CAT IV 600 V — Li-ion ~8 h; 8 GB SD (max 32 GB); Flexi-TF probes included.

Typical applications

Three-phase power quality surveys and troubleshooting.
Energy-loss and harmonic studies on industrial feeders.
Jobs specifying Class A compliance vs Class S analyzers.

Selection guide

Standard — IEC 61000-4-30 Class A (435-II / 437-II); Class S on 434-II.
Voltage — 1–1000 V phase-to-neutral (per 430 Series II technical data); typical Class A voltage accuracy ±0.1% of nominal.
Transient capture — Automatic transient mode; 200 kHz waveform on all phases up to 6 kV.
Sampling — PowerWave half-cycle RMS; waveform capture 50/60 cycles per event.
Functions — V/A/Hz, dips/swells, harmonics, power/energy, energy loss calculator, unbalance, inrush, flicker, mains signaling, PowerWave (per OEM documentation function set).
Safety — CAT III 1000 V / CAT IV 600 V.
Memory — 8 GB SD card (max 32 GB); logger up to 600 parameters.
Battery — Up to 8 hours per charge (Li-ion).
Current probes — Four included i430-Flexi-TF thin flexible probes.
Software — Included analysis software for graphs and reports.

Common mistakes

Ordering 434-II Class S when the study contract requires Class A — 435-II / 437-II are Class A per the datasheet.
Assuming 400 Hz aerospace/avionics coverage — 437-II adds 400 Hz; 435-II is listed for 50/60 Hz systems.
Ignoring CAT III 1000 V / CAT IV 600 V limits versus the installation category on site.
Leaving probe set blank — four i430-Flexi-TF flexible probes are included; state if other CT types are needed.
Under-sizing SD memory planning — 8 GB SD included, max 32 GB; logger up to 600 parameters.
Electrical test · Power quality buying guide

When to RFQ / what to tell us

Study type (Class A PQ, energy loss, transient, harmonics) and system frequency (50/60 Hz vs 400 Hz need).
Voltage/current ranges, probe preference, and CAT category of the measurement point.
Logging duration, SD size need, quantity, ship-to, software/report requirements.

Request a Quote · Get selection help

Specs

Spec	Value
SKU	36912
Brand	Fluke
Model	435-II
Product type	powerqualityanalyzer
Standard compliance	IEC 61000-4-30 Class A (435-II / 437-II); Class S on 434-II
Voltage range	1–1000 V phase-to-neutral (per 430 Series II technical data)
Voltage accuracy	±0.1% of nominal voltage (typical Class A)
Transient capture	Automatic transient mode; 200 kHz waveform on all phases up to 6 kV
Sampling	PowerWave half-cycle RMS; waveform capture 50/60 cycles per event
Functions	V/A/Hz, dips/swells, harmonics, power/energy, energy loss calculator, unbalance, inrush, flicker, mains signaling, PowerWave (per OEM documentation)
Safety rating	CAT III 1000 V / CAT IV 600 V
Memory	8 GB SD card (max 32 GB); logger up to 600 parameters
Battery life	Up to 8 hours per charge (Li-ion)
Current probes	Four included i430-Flexi-TF thin flexible probes
Software	Included analysis software for graphs and reports
Frequency	50/60 Hz systems; 437-II adds 400 Hz

Documents

Fluke 430 Series II datasheet (PDF)

FAQ

Q: Is 435-II Class A or Class S? A: IEC 61000-4-30 Class A for 435-II / 437-II; Class S is listed for 434-II.

Q: Does it cover 400 Hz systems? A: 435-II is listed for 50/60 Hz; 437-II adds 400 Hz. Say so on the RFQ if you need 400 Hz.

Q: What should I send for a quote? A: Study type, frequency, ranges, CAT category, logging needs, quantity. Compatible with systems using Fluke 435-II — we do not claim authorized-dealer status.