Safety Instructions - Delta D750 User Manual

User Manual
D750
DC Power Supply
CAUTION
The following safety precaution must be observed during all phases of operation, service and
repair of this equipment. Failure to comply with the safety precautions or warnings in this document
violates safety standards of design, manufacture and intended use of this equipment and may
impair the built-in protections within.
Delta shall not be liable for user's failure to comply with these requirements.
INSTALLATION CATEGORY
The D750 A has been evaluated to INSTALLATION CATEGORY II. Installation category (over
voltage category) II: local level, appliances, portable equipment etc.. With smaller transient over
voltage than Installation Category (over voltage category) III.
GROUNDING
This product is a Safety Class 1 instrument. To minimize shock hazard, the instrument chassis must
be connected to an electrical ground. The instrument must be connected to the AC power supply
mains through a three conductor power cable, with the ground wire firmly connected to an electrical
ground (safety ground) at the power outlet.
For instruments designed to be hard-wired to the supply mains, the protective earth terminal must
be connected to the safety electrical ground before another connection is made. Any interruption
of the protective ground conductor, or disconnection of the protective earth terminal will cause a
potential shock hazard that might cause personal injury.
There is a potential shock hazard at the RS232/485 and the IEEE ports when using power supplies
with rated or combined voltage greater than 400V and the Positive Output of the Power Supply is
grounded. Do Not connect the Positive Output to ground when using the RS232/485 or IEEE.
FUSES
Fuses must be changed by authorized Delta service personnel only. For continued protection
against risk of fire, replace only with the same type and rating of fuse.
INPUT RATINGS
Do not use AC supply which exceeds the input voltage and frequency rating of this instrument. The
input voltage and frequency rating of the D750 is: 100-200V~, 50/60Hz.For safety reasons, the
mains supply voltage fluctuations should not exceed +/-10% of nominal voltage.
LIVE CIRCUITS
Operating personnel must not remove the instrument cover. No internal adjustment or component
replacement is allowed by non-Delta qualified personnel. Never replace components with power
cable connected. To avoid injuries, always disconnect power, discharge circuits and remove
external voltage source before touching components.
3 │ www.deltaww.com

Safety Instructions

WARNING
OUTPUT TERMINAL GROUNDING
!
WARNING
CAUTION