User`s manual

DA-710 Series Hardware Manual Hardware Installation
2-8
3. Surge Ground is connected to the Chassis Ground via a braided cable or other appropriate grounding wire.
Surge Ground is used as the ground conductor for all surge and transient suppression circuitry internal to
the computer unit.
4. Chassis Ground should be connected to the AC Ground terminal.
ATTENTION
1.
Equipment must be installed according to the applicable national wiring codes.
2.
Surge Ground MUST be disconnected from the Chassis Ground during HIPOT (dielectric strength) testing.
3.
All line-to-ground transient energy is shunted to the Surge Ground terminal. If you need to isolate the
inputs from the ground, remove the ground braid between Surge and Chassis Ground. Note that all
line-to-ground transient protection circuitry will be disabled.
For DC Power Input
The DA-710 series low voltage DC power supply features reverse polarity protection and dual independent
inputs. The dual power inputs allow the connection of two DC sources with the same nominal voltage to provide
redundant power supply inputs. The DC source must be connected to the DC inputs according to the polarity
markings on the unit.
ATTENTION
1.
Equipment must be installed according to the applicable national wiring codes.
2.
Surge Ground should be connected to Chassis Ground via a braided cable or other appropriate ground
wire.
3.
Chassis Ground must be connected to a grounded surface or object.
4.
All line-to-ground transient energy is shunted to the Surge Ground terminal. If you need to isolate the
inputs from the ground, remove the ground braid between Surge and Chassis Ground. Note that all
line-to-ground transient protection circuitry will be disabled.
HIPOT (Dielectric Strength) Testing
Before performing the HIPOT test, you MUST have the jumpers removed and the braided ground cable
disconnected. This is required to prevent the transient/surge suppression circuitry, which is connected to Surge
Ground, from being activated during the HIPOT test.