Static Discharge Damage Prevention - D-Link DES-7200 Hardware Installation Manual

DES-7200 Hardware Installation Guide
Do not maintain the equipment alone when it is energized, unless absolutely necessary.
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Be sure to make a careful check before you shut down the power supply.
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Do not pl ace t he e quipment i n a d amp/wet location. D o no t l et an y liquid e nter t he

chassis
Connect the negative and positive lines correctly according to the instructions when DC

power supply is used.
All grounding conductors should be connected before and disconnected after the line
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and neutral(AC)/ input(DC) c onductors.
Warning
Warning
2.1.4

Static Discharge Damage Prevention

Although m uch has been done in t he DES-7210/7206 to pr event s tatic el ectricity, gr eat
damage may be caused to the circuitry and equipment when the static electricity exceeds a
certain limit.
In the communication network of the DES-7210/7206, electrostatic induction may come from
the following sources:
External electric field produced by the high-voltage supply cable, lightning, etc;
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Internal systems such as the indoor floor and the entire structure.
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To prevent damage from static electricity, you must pay attention to the following:
1. Proper grounding of the equipment and floor
2. Dust prevention measures are taken in the room.
3. An appropriate humidity is maintained.
4. Always wear an anti-static wrist strap when you touch any circuit board.
5. Try to hold a circuit board by its edges. Do not touch any components or the PCB.
6. Do not let any clothes touch a circuit board. An antistatic wrist strap can only prevent
static electricity from human damaging the circuit board, but cannot prevent any static
electricity on clothes.
- Min. 1 0mm² ( 6AWG) pr otective grounding conductor s hould be pr ovided t o t he
equipment grounding terminals on rear panel.
- For po wer s upply unit 7200-2000DC, m in. 1 0mm² ( 6AWG) pr otective grounding
conductor should be provided to input terminal;
- For po wer s upply unit 7200-1200DC, m in. 4m m² ( 10AWG) pr otective grounding
conductor should be provided to input terminal;
- For po wer s upply unit 7 200-2000AC and 72 00-1200AC, m in. 2. 5mm² ( 12AWG)
protective grounding conductor should be provided to input terminal.
Any nonstandard a nd i naccurate electrical op eration c an cause an
accident s uch as f ire or el ectrical at tack, t hus causing s evere e ven f atal
damages to human bodies and equipment.
Direct or i ndirect t ouch t hrough a wet o bject on h igh-voltage a nd m ains
supply can bring a fatal danger.
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