Major tech MT476 사용 설명서 - 페이지 4

{카테고리_이름} Major tech MT476에 대한 사용 설명서을 온라인으로 검색하거나 PDF를 다운로드하세요. Major tech MT476 16 페이지. 690v voltage tester

1. SAFETY WARNINGS

1.1. International Safety Symbols

Warning of a potential danger, comply with instruction manual.

Caution! Dangerous voltage. Danger of electrical shock.

Double insulation.

• Reference. Please use utmost attention.

• Do not exceed the maximum allowable input range of any function

• Be sure to read the instructions carefully before using and check that the

battery is adequate. Do not remove the voltage detector without

authorization from professional technicians. If the voltage detector is not

used for a long time, take out the battery and store it in a dry tool box.

1.3. Safety Advices

• Depending on the internal impedance of the voltage detector there will be

a different capability of indicating the presence or absence of operating

voltage in case of the presence of interference voltage.

• A voltage detector of relatively low internal impedance, compared to the

reference value of 100kΩ, will not indicate all interference voltages having

an original voltage value above the ELV level. When in contact with the

parts to be tested, the voltage detector may discharge temporarily the

interference voltage to a level below the ELV, but it will be back to the

original value when the voltage detector is removed.

• When the indication "voltage present" does not appear, it is highly

recommended installing earthing equipment before work.

• A voltage detector of relatively high internal impedance, compared to the

reference value of 100kΩ, may not permit to clearly indicate the absence

of operating voltage in case of presence of interference voltage.

• When the indication "voltage present" appears on a part that is expected

to be disconnected of the installation, it is highly recommended

confirming by another means (e.g. use of an adequate voltage detector,

visual check of the disconnecting point of the electric circuit, etc.) that

there is no operating voltage on the part to be tested and to conclude

that the voltage indicated by the voltage detector is an interference

voltage.

• A voltage detector declaring two values of internal impedance has passed

a performance test of managing interference voltages and is (within