Keysight RP7970 Serie Manuel D'utilisation page 64

2 Installing the Instrument
Safety agency requirements dictate that there must be a way to physically disconnect
the ac mains cable from the unit. A disconnect device, either a switch or circuit
breaker must be provided in the final installation. The disconnect device must be
close to the equipment, be easily accessible, and be marked as the disconnect device
for this equipment. It must meet the input ratings requirements listed in the previous
table.
Starting with firmware revision B.06.03.985 and up, ac mains wiring without a neutral
connection may be used. Refer to
firmware version is installed on your instrument.
A solidly-grounded Wye-type ac mains transformer is required. This may be on-premise or part of the
electric utility equipment. If the neutral is to be used, it must be a separate conductor from earth
ground (Protective Earth (PE)).
64
Instrument Identification
380-480 ac mains, line-to-line
This is a solidly-grounded Wye-type
transformer.
A separate Neutral (N) connection to the
unit is not required for firmware revision
B.06.03.985 and up.
200-208 ac mains, line-to-line
This is a solidly-grounded Wye-type
transformer.
A separate Neutral (N) connection to the
unit is not required for firmware revision
B.06.03.985 and up.
200-208 ac input is allowed on RP798xA
models with firmware revision B.06.03.1003
and up. 200/208 Vac input reduces the
current and power rating by 50%.
Keysight RP7970 & RP7980 Series Operating and Service Guide
to determine which