GF438II handheld three phase power quality analyzer offer the best ability in power quality analysis, GF438II handheld power quality analyzer help locate, predict, prevent and troubleshoot power quality problems in three phase and single phase power distribution systems. Additionally, GFUVE patented energy loss algorithm, unified power measurement, measuring and counting energy losses due to harmonics and unbalance issues, allowing the user to pinpoint the origin of energy losses in the system.

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- 3s statistical interval, continuously record 168h
- Support multi-brand current transformer
- Up to 32G data storage space
- Record up to 461 power energy parameters simultaneously
- Up to 10000 screenshots saved
- Support periodic recording function
- Up to 3.9M/s USB high-speed transfer
- Recording wave

- Energy loss calculator: classic active and reactive power measurements, unbalance and harmonic power, are quantified to pinpoint true system energy losses in dollars (other local currencies available).
- Power inverter efficiency: simultaneously measure AC output power for power electronics systems.
- Power wave data capture: GF438II analyzers capture fast RMS data, show half-cycle and waveforms to characterize electrical system dynamics (generator start-ups, UPS switching etc.).
- Waveform capture: GF438II capture 50/60 cycles (50/60Hz) of each event that is detected in all modes, without set-up
- Automatic transient GF438II analyzers capture 200 kHz waveform data on all phases simultaneously up to 1000V.
- Fully class-A compliant: GF438II analyzers conduct tests according to the stringent international IEC 61000-4-30 class-A standard.
- Mains signaling: GF438II analyzer measure interference from ripple control signals at specific frequencies.
- Troubleshoot: analyze the trends using the cursors and zoom tools.
- Highest safety rating in the industry: 600 V CAT IV/1000 V CAT III rated for use at the service entrance.
- Measure all three phases and neutral: with included four flexible current probes with enhanced thin flex designed to fit into the tightest places.
- Automatic trending: every measurement is always automatically recorded, without any set-up.
- System-monitor: ten power quality parameters on one screen according to EN50160 power quality standard
- Logger function: configure for any test condition with memory for up to 600 parameters at user defined intervals.
- View graphs and generate reports: with included analysis software.
- Battery life: up to 5 hours operating time per charge on Li-ion battery pack.

Name | Measurement type |
---|---|

Voltage | rms, ava, pk+, pk-, rms-1/2, CF |

Frequency | Freq |

Current | rms, ava, pk+, pk-, rms-1/2, CF |

Power & energy | P, S, Q, PF, DPF, W |

Computation | THD, DC, 1-63 Harm, 1-62 InHarm, 1-35 HiHarm, 1-62 SubHarm |

Voltage harmonic | THD, DC, 1-63 Harm, 0-62 InHarm, 1-35 HiHarm, 1-62 SubHarm , KF |

Current harmonic | THD, DC, 1-62 Harm |

Harmonic power | Ia, Ib, Ic, ΣPtotal, ΣQtotal, ΣStotal, 15 minutes |

Fluctuation and flickering | PST, PLT, Fluct, Fluct Max |

Unbal | V Pos, A pos , V neg , A neg , V zero, A zero, Unbal |

Event log | Voltage swell, voltage sags, DIP, surge current, voltage and current distortion out of limit, odd harmonics containing rate out of limited, unbalanced voltage current out of limit, frequency out of limit, PST out of limit, PLT out of limit, long-term voltage interruption, voltage fluctuation deviation, voltage harmonics out of limit, 2-25st harmonicsout of limit |

P, Q, S name | Measurement type |

Measurement types | P: Calculate by every 10 cycles S: Calculated by the effective value of voltage and current Q: Calculated by the apparent power, active power |

Display | Table charts, trend chart |

Measuring range | According to the range of the voltage and current |

Resolution | 0.001W |

Accuracy | ±0.5% |

Urms | Measurement type |

Mode | 'Calculated by the square root value of 10/12 cycle |

Measuring circuit | 1P2W/ 2P3W /3P3W/ 3P4W |

Basic frequency of the measuring circuit | 50Hz, 60Hz |

Input channels | 4 phase voltage, 4 phase current |

Display mode | Effective current value of each channel |

Range | 120V, 230V, 400V, 1000V, Max 1000V instantaneous voltage |

Resolution | 0.001V |

Accuracy | 0.1% RG |

Arms | Measurement type |

Mode | 'Calculated by the square root value of 10/12 cycle |

Display mode | Effective current value of each channel |

Range | Current: according to the current clamps Option Current clamps:5A/50A/100A/500A/1000A Flexible Current probe: 1000A/3000A/6000A |

Resolution | 0.001A |

Accuracy | 0.1% + accuracy of the current clamps |

Frequency | Measurement type |

Measurement mode | Calculate by 10 cycles (50Hz) or (60Hz) |

Display mode | Measurement by 10 cycles |

Nominal frequency/resolution | 50.000Hz/0.001Hz or 60.000Hz/0.001Hz |

Bandwidth measurement | 42.5-57.5Hz or 52.5-67.5Hz |

Accuracy | ±0.001Hz |

Half-wave RMS current/voltage | Measurement type |

Measurement mode | Calculate by every 2 cycles. Each cycle ,1/2 cycle made up of a waveform calculation |

Measuring range/resolution | Voltage: 120V/0.01V, 230V/0.01V, 400V/0.01V, 1000V/0.01V, Current: According to the current clamps |

measurement accuracy | ±0.1% |

Power factor | Measurement type |

Measurement mode | The ratio of average power to apparent power |

Display mode | Real-time data showed |

Measurement range/resolution | -1.000-1.000/0.001 |

Accuracy | ±0.1% |

Vfund, Afund, Harmonic power | Measurement type |

Measurement mode | Meet IEC61000-4-7,Analysis time window is ten cycles |

Window points | 5120 points |

Display mode | Form figure, trend charts, histograms |

Number of measurement | 1-50 Times |

Measurement accuracy | Vfund >1%: Error<1% Vfund <1%: Error<0.05% Rated Voltage Afund >3%: Error<1% Afund <3%: Error<0.05% Current range |

InHarm Voltage, InHarm current | Measurement type |

Measurement mode | Meet IEC61000-4-7, Analysis time window is ten cycles |

Window points | 5120 points |

Display mode | Form figure, trend charts, histograms |

Numbers of measurement | 1-16 groups |

Measurement accuracy | Vfund >1%: Error<1% Vfund <1%: Error<0.05% Rated Voltage Afund >3%: Error<1% Afund <3%: Error<0.05% Current range |

HiHarm Voltage, HiHarm current | Measurement type |

Measurement mode | Meet IEC61000-4-7, Analysis time window is ten cycles |

Window points | 5120 points every 10 cycles |

Display mode | Form figure, trend charts, histograms |

Numbers of measurement | 1-35 groups/2100Hz-8900Hz |

Measurement accuracy | Vfund >1%: Error<1% Vfund <1%: Error<0.05% Rated Voltage Afund >3%: Error<1% Afund <3%: Error<0.05% Current range |

Voltage/current Unbal (pos, neg) | Measurement type |

Measurement mode | 3P3W or 3P4W, using three phase of fundamental wave components to calculate |

Display mode | Form figure, trend charts, histograms |

Measurement accuracy | Voltage unbal: ±0.2% Current unbal: ±0.5% |

Voltage fluctuation | Measurement type |

Measurement mode | Calculate by the quadratic mean of half wave |

Display mode | Form figure, trend charts |

Measurement accuracy | ±1% |

IEC Flickering | Measurement type |

Measurement | P short term (Pst) , P long term (Plt) |

Measurement mode | According to IEC61000-4-15 Standard to calculate Pst (10 mins) Plt (2 hours) |

Display mode | Form figure, trend charts |

Measurement range | 0-20 |

Measurement accuracy | ±5% |

Surge current | Measurement type |

Measurement mode | Half-wave RMS of current is higher than set value and sustain time is 10ms-1min |

Display mode | Maximum of the surge current and surge current wave |

Measurement accuracy | 0.1% |

Voltage swell, Voltage sags, DIP | Measurement type |

Measurement mode | Swell: When half-wave RMS of voltage is higher than set value and sustain time is 10ms-1min, judged as swell. Sags: When half-wave RMS of voltage is lower than set value and sustain time is 10ms-1min, judged as sags. DIP: half-wave RMS of voltage is higher than set value and sustain time is 10ms-1min, judged as DIP |

Display mode | Swell, sags, DIP wave sustain time, extent and so on. |

Measurement accuracy | 0.1% |

Machinery | |

Size | 263mm x 168mm x 65mm |

Key | 21PCS |

Binary | binary input:1 ; binary output:1 |

Comunication Port | USB, 10/100M port |

Weight | 2KG |

Power supply | |

Voltage input | 110V-240V |

Adapter outpu | 15V, 3A |

Battery | Rechargeable nickel metal hydride, 5500mAh |

Battery working time | ≥ 6h |

Battery recharging time | 5h (Environment temperature 25°C) |

Power saving facility | LCD backlight brightness is adjustable, standby time is adjustable |

Display | |

Size | 112.8 x 84.6mm |

Color | 260000 color |

Resolutions | 640 x 480 |

Brightness | Max 350 cd/m2 (Typ), brightness is adjustable |

Contrast | 500:1 (Typ) |

Visual angle | 70/70/50/70 (Typ.)(CR ≥10) ( Left/ Right/ UP/Down) |

Environment | |

Working environment | 0°C to +45°C, humidity below 90rh% |

Storing environment | '-20°C to +50°C, humidity below 95rh% (non-condensing) |

Store | |

Type | TF card (inbuilt) |

Size | 32G |

Standards | |

Measurement method | IEC 61000-4-30 |

Measurement performance | IEC 61000-4-30 A LVL |

Flickering | IEC 61000-4-15 |

Harmonic | IEC 61000-4-7 |

Safety | |

Standard | GB 4793.1-2007/IEC 61010-1:2001: "Measurement, control and laboratory electrical equipment safety requirements", first part: general requirements. Security level: CAT III 1000 V/ CAT IV 600 V./td> |

MAX voltage of phase angle input | CAT III 1000V/CAT IV 600V |