| Environmental Specifications |
| Operating Temperature | 32 to 113°F (0 to 45°C) |
| Storage Temperature | -4C to 140°F (<20 to 60°C), with battery: -4 to 122°F (-20 to 50°C) |
| Operating Humidity | <50°F (<10°C) non condensing
50 to 86°F (10 to 30°C) ≤95%
86 to 104°F (30 to 40°C) ≤75%
104 to 113°F (40 to 45°C) ≤45% |
| Operating Altitude | 6500' (2000 m) (up to 4,000 m derate to 1000 V CAT II/600 V CAT III/300 V CAT IV) |
| Storage Altitude | 39,000' (12,000 m) |
| IP Rating | IEC 60529:IP50, in connected condition with protection caps in place |
| Vibration | MIL-T-28800E, Type 3, Class III, Style B |
| Safety IEC 61010-1 | IEC mains input: Overvoltage Category II, Pollution Degree 2
Voltage Terminals: Overvoltage Category IV, Pollution Degree 2 |
| Electromagnetic Compatibility (EMC) | International: IEC 61326-1: Industrial
Korea (KCC): Class A Equipment (Industrial Broadcasting & Communication Equipment)
USA (FCC): 47 CFR 15 subpart B. This product is considered an exempt device per clause 15.103. |
| Wireless Radio with Adapter | Frequency range: 2412 to 2462 MHz
Output power: <100 mW |
| Electrical Specifications |
| Single and Three-Phase Topologies | Wiring configurations: 1-Φ, 1-Φ IT, Split-phase, 3-Φ wye, 3-Φ wye IT, 3-Φ wye balanced, 3-Φ delta, 3-Φ Aron/Blondel (2-element delta), 3-Φ delta open leg, 3-Φ high leg delta, 3-Φ delta balanced. Currents only (load studies) |
| Voltage Inputs | Number of inputs: 4 (3 phases and neutral)
Maximum input voltage: 1000 Vrms (1700 Vpk) phase to neutral |
| Input Impedance | 10 MΩ each phase to neutral |
| Bandwidth | 42.5 Hz to 3.5 kHz |
| Scaling | 1:1, variable |
| Current Inputs | Number of inputs: 3, mode selected automatically for attached sensor |
| Current Sensor Output Voltage | Clamp: 500 mVrms / 50 mVrms; CF 2.8
Rogowski coil: 150 mVrms/15 mVrms at 50 Hz, 180 mVrms/18 mVrms at 60 Hz; CF 4; all at nominal probe range |
| Bandwidth(-3 dB) | 42.5 Hz to 3.5 kHz |
| Scaling | 1:1 and variable |
| Data Acquisition Resolution | 16-bit synchronous sampling |
| Sampling Frequency | 10.24 kHz at 50/60Hz, synchronized to mains frequency |
| Input Signal Frequency | Mains 50/60 Hz (42.5 to 69 Hz) |
| Data Storage | Internal flash memory (not user replaceable) |
| Memory Size | Typical 1 offline logging session of 1 week with 1 second intervals. The number of possible logging sessions and logging period depends on user requirements. |
| Measured Parameters | Voltage, current, frequency, THD V, THD A, power, power factor, fundamental power, DPF |
| Averaging Interval | 1 s |
| Total Harmonic Distortion | THD for voltage and current is calculated on 25 harmonics |
| Calculated min/max values times | Voltage: Full cycle RMS (20 ms at 50 Hz, 16.7 ms at 60 Hz)
Current: Half cycle RMS (10 ms at 50 Hz, 8.3 ms at 60 Hz)
Power: 200 ms |
| Interfaces | USB-A: Firmware updates, max. supply current: 120 mA |
| WiFi | Supported modes: Direct connection and connection to infrastructure |
| Security | WPA2-AES with pre-shared key |
| Power Supply | Voltage Range: Nominal 100 V to 500 V (85 V min to 550 V max) using safety plug input |
| Mains Power | Nominal 100 V to 240 V (85 V min to 265 V max) using IEC 60320 C7 input |
| Power Consumption | Maximum 50 VA (max. 15 VA when powered using IEC 60320 input) |
| Standby Power | <0.3 W only when powered using IEC 60320 input |
| Efficiency | ≥68.2 % (in accordance with energy efficiency regulations) |
| Mains Frequency | 50/60 Hz ±15 % |
| Battery Power | Li-ion 3.7 V, 9.25 Wh, customer-replaceable |
| On-Battery Runtime | Up to 4 hr (up to 5.5 hr in energy saving mode) |
| Charging Time | <6 hours |
| General Specifications |
| Color LCD Display | 4.3-inch active matrix color TFT, 480 pixels x 272 pixels, resistive touch panel |
| Warranty | 3540 FC and built-in power supply 2 years (battery not included) |
| Accessories | 1 year |
| Calibration Cycle | 2 years |
| Dimensions | 3540 FC: 7.8 x 6.6 x 2.2" (19.8 x 16.7 x 5.5 cm)
Detachable Power Supply: 5.1 x 5.1 x 1.8" (13.0 x 13.0 x 4.5 cm)
3540 FC with Power Supply Attached: 7.8 x 6.6 x 4.0" (19.8 x 16.7 x 9 cm) |
| Weight | 2.5 lb (1.1kg) |
| Tamper Protection | Kensington lock |
