Hunan Next Generation Instrumental T&C Tech. Co., Ltd.
NGI
l
NGI
N39200 Series
High-accuracy Dual-channel Programmable DC Power Supply
2
2 Safety Instructions
In the operation and maintenance of the instrument, please strictly comply with the
following safety instructions. Any performance regardless of attentions or specific
warnings in other chapters of the manual may impair the protective functions
provided by the instrument.
NGI shall not be liable for the results caused by the neglect of those instructions.
2.1 Safety Notes
Confirm the AC input voltage before supplying power
.
Reliable grounding
: Before operation, the instrument must be reliably grounded
to avoid the electric shock.
Confirm the fuse
: Ensure to have installed the fuse correctly.
Do not open the chassis
: The operator cannot open the instrument chassis.
Non-professional operators are not allowed to maintain or adjust it.
Do not operate under hazardous conditions
: Do not operate the instrument
under flammable or explosive conditions.
Confirm the working range
: Make sure the DUT is within N39200’s rated range.
2.2 Safety Symbols
Please refer to the following table for definitions of international symbols used on
the instrument or in the user manual.
Table 1
Symbol
Definition
Symbol
Definition
DC (direct current)
N
Null line or neutral line
AC (alternating current)
L
Live line
AC and DC
I
Power-on
Three-phase current
Power-off
Ground
Back-up power
Protective ground
Power-on state
Chassis ground
Power-off state
Signal ground
Risk of electric shock
WARNING Hazardous sign
High
temperature
warning
Caution
Be careful
Warning