Electrical Symbols; Technical Specifications; Reference And Operating Conditions - UNI-T UT2658 Operating Manual

factories and mining, R&D institutes, metrological department. It is particularly
needed in electric charging and relay protection system, electric power
calculation, check and monitoring from power supply remarketing departments
as well as electric installment, relay protection, differential inspection, start-up
testing, power transformation check , electrical training, skill competition
performed by technical department.
II. Electrical Symbols
Extreme danger! To avoid personal injury or accidents in case of
electric shock, observe safety rules strictly
Danger! To avoid electric shock, personal injury or accidents, please
follow safety notes.
Warning! Confirm to safety instructions, otherwise it may cause
personal injury or meter damage
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Alternating Current(AC)
Direct Current(DC)
Dual Insulation
III. Technical Specifications

1. Reference and Operating Conditions

Reference
Factors
Conditions
Ambient Temperature
23
Ambient Humidity
40% 60%
Waveform Sine wave
Frequency
50HZ 1HZ
Working Voltage
9V 0.1V
Operating
Notes
Conditions
1 -10 40
80%
Sine wave =0.01
45HZ 65HZ
9V 1.5V
9