KYORITSU 6315 Instruction Manual - Manual (Page 53)

Wiring connection KEW6315
- 51 - KEW6315
Wiring connection
Read the following precautions prior to wiring connection.
DANGER
● With attention to the measurement category to which the object under test belongs, do not make
measurements on a circuit in which the electrical potential exceeds the following values.
* 300V AC for CAT. IV, 600V AC for CAT. III, 1000V AC for CAT. II
● Use the voltage test leads and clamp sensors dedicated for this instrument.
● Connect the clamp sensors, voltage test leads and power cord to the instrument first, and then connect
them to the measured object or the power source.
● When the instrument and the test lead are combined and used together, whichever lower category
either of them belongs to will be applied. Confirm that the measured voltage rating of the test lead is
not exceeded.
● Do not connect voltage test leads or clamp sensors unless required for measuring the desired
parameters.
● Clamp sensors should always be connected on the downstream side of a circuit breaker, which
is safer than the upstream side.
● Do not open-circuit the secondary side of a supplementary CT while it is energized because of the high
voltage generated at the secondary side terminals.
● Be careful to avoid short-circuiting the power line with the un-insulated part of the voltage test probes
during the setting up of the instrument. Do not touch the tip metal part.
● Transformer jaw tips are designed in such a way to avoid short-circuiting. If the circuit under test has
exposed conductive parts, extra care should be taken to minimize the possibility of shorting.
● Keep your fingers behind the barrier during a measurement.
Barrier: provides protection against electrical shock and ensuring the minimum required air and
creepage distances.
● Never disconnect the voltage test leads from the connectors of the instrument during a measurement
(while the instrument is energized).
● Do not touch two lines under test with the metal tips of the test leads.
WARNING
● To avoid possible electric shock and short-circuit, always turn off the line under test at wiring connection.
● Do not touch the un-insulated tip of voltage test leads.