UNI-T UT268B, Руководство по эксплуатации

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4
Alternating Current (AC)
Direct Current (DC)
Double Insulated
V. Technical Specifications
1. Basic Operating Conditions
1) Ambient temperature: (23±5)°C
2) Ambient humidity: (45~75)% RH
3) Waveform of measured signal: Sinusoidal wave, =0.02
4) Frequency of measured signal: (50±0.2)HZ
5) Location of measured current-carrying conductor at the clamp jaws: At center
6) Current amplitude when measuring phase frequency, phase sequence, power
and power factor: 5A±0.2A
7) Voltage amplitude when measuring phase frequency, phase sequence, power
and power factor: 220V±20V
8) Electromagnetic interference to external-reference frequency: Shall be avoided.
2. Rated Operating Conditions
1) Ambient temperature: (-15~+45)°C
2) Ambient humidity: (0~90)% RH
3) Operating altitude:
1500 m
4) Waveform of measured signal: Sinusoidal wave, =0.05
5) Frequency of measured signal: 45~65HZ
6) Current amplitude when measuring phase frequency, phase sequence, power
and power factor: 20mA~1000A
7) Voltage amplitude when measuring phase frequency, phase sequence, power
and power factor: 20V~600V
8) Location of measured current-carrying conductor at the clamp jaws: Any
location
3. General Specifications
Functions
Measure 3-phase AC voltage, current, phase between
voltages, phase between currents, phase between voltage
and current, frequency, phase sequence, active power,
reactive power, apparent power, power factor, and current
vector sum; identify transformer connection section,
inductive circuit, and capacitive circuits; and test
secondary loop and bus differential protection system,
display the phase relation between differentially-protected
CTs of each group, check if the wiring of electric energy
meter is correct, repair equipment of measured line, etc.