Digital phase meter SMG2000E

multifunctionfor cables

The SMG2000E double-clamp digital phase meter is a portable, high-precision, two-channel handheld instrument for on-site measurement of voltage, current and phase. It enables safe, non-intrusive testing without disconnecting lines and is intended for field diagnostics of phase differences (U-U, I-I, U-I), phase sequence, transformer wiring groups, differential protection systems and meter connections.

Key features

• Compact handheld design — portable and easy to operate in field conditions.
• Wide measurement range: current 10 mA–10 A; voltage 3 V–500 V without opening the circuit.
• High-contrast LCD: characters up to 25 mm and 70° adjustable tilt for optimal readability.
• Intuitive function switch for fast selection of voltage, current and phase modes.
• High-precision clamp sensors: current resolution 0.1 mA, voltage resolution 0.1 V (patented).
• Low power consumption with battery voltage monitoring; powered by a single 9 V laminated battery.

Applications

• On-site phase difference and phase sequence verification.
• Transformer winding and group checks.
• Verification of differential protection connections and meter wiring.
• Non-intrusive diagnostics where line disconnection is not possible or undesired.

Measurement parameters and conditions

• Reference conditions: ambient temperature (23±5) °C; humidity 45–75% RH; measured waveform sine, β = 0.02; frequency (50±0.2) Hz.
• Rated working conditions: ambient temperature 0–40 °C; humidity 20–80% RH; waveform sine, β = 0.05; frequency (50±0.5) Hz. Under rated conditions, working error limit shall not exceed twice the basic error limit.
• Phase measurement: range 0–360°; resolution 1°; basic error ±2°.
• Voltage measurement (AC): ranges and resolutions — 20 V (0.01 V), 200 V (0.1 V), 500 V (1 V); basic error ±(0.3% reading + 0.2% range). Input impedance for U1–U2: 40 kΩ.
• Current measurement (AC): ranges and resolutions — 200 mA (0.1 mA), 2 A (1 mA), 10 A (10 mA); basic error ±(0.3% reading + 0.2% range).
• Typical amplitudes for phase measurement: reference 100–220 V and 0.5–1.5 A; rated phase amplitude ranges: U1–U2 30–500 V; I1–I2 10 mA–10.00 A; U1–I2 or I1–U2 10–500 V and 10 mA–10.00 A.
• External reference-frequency electromagnetic interference should be avoided.

Other technical features

• Display: 3½ digits; sampling rate approx. 3 samples/s.
• Power supply: single 9 V laminated battery; supply current < 5 mA.
• Dimensions (case): 192 × 95 × 55 mm. Clamp shell: 140 × 42 × 20 mm. Jaw size Φ7 mm × 9 mm.
• Weight: body approx. 280 g; test clamps 2 × 200 g.
• Storage temperature: −10 °C to 50 °C.
• Model: SMG2000E. Measurement ranges: voltage 3 V–500 V; current 10 mA–10 A; phase 0°–360°.