NEC N8580-31 User Manual

NEC 500 UPS

Uninterruptible Power Supply

100 VAC User’s Manual

990-5021, Revision 1, 12/98

N8580-31

Important!

Please read and save this manual. It provides installation and operating instructions that will help you get the fullest

performance and service life from your UPS.

About Your New UPS

This Uninterruptible Power Supply (UPS) is designed to prevent blackouts, brownouts, sags and surges from reaching your
computer and other valuable electronic equipment. This UPS also filters out small AC voltage fluctuations and isolates your
equipment from large disturbances by internally disconnecting from the AC voltage, while supplying power from its internal
batteries until the AC voltage returns to safe levels.

While running on battery, an internal alarm will sound (periodic beeps). The ON/TEST button may be pressed to silence the
UPS alarm for this or any other fault condition.

If the AC voltage does not return, the UPS will continue supplying power to the connected equipment until exhausted. A
sustained tone will sound three minutes before the UPS’s final low battery shutdown. The interface software provides automatic,
unattended shutdown.

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Table of Contents

About Your New UPS....................................................................................................................................................i

1. Safety.........................................................................................................................................................................1

2. Attention from the Safety Point of View.................................................................................................................2

3. Attention from the Operational and Maintenance Points of View .......................................................................3

4. Before Installing.......................................................................................................................................................3

5. Name and Function of Parts ...................................................................................................................................4

6. Installation................................................................................................................................................................6

7. Operating Instructions.............................................................................................................................................7

8. Function....................................................................................................................................................................8

9. Abnormal Conditions and Protection Functions ..................................................................................................9

10. Troubleshooting...................................................................................................................................................10

11. Maintenance and Checks....................................................................................................................................11

Specifications.............................................................................................................................................................12

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1. Safety

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2. Attention from the Safety Point of View

This section contains important instructions that should be followed during installation and maintenance of the NEC 500 and
batteries. It is intended for customers who setup, install, relocate, or maintain APC equipment.

Electrical Safety

• EMC verification is VCCI - A.

• Do not work alone under hazardous conditions.

• High short circuit current through conductive materials could cause severe burns.

• A licensed electrician is required to install permanently wired equipment.

• Check that the power cord(s), plug(s), and sockets are in good condition.

• To reduce the risk of electric shock when grounding cannot be verified, disconnect the equipment from the AC power outlet

before installing or connecting to other equipment. Reconnect the power cord only after all connections are made.

• Do not handle any kind of metallic connector before the power has been removed.

• Use one hand, whenever possible, to connect or disconnect signal cables to avoid a possible shock from touching two

surfaces with different electrical grounds.

• Connect the equipment to a three wire AC outlet (two poles plus ground). The receptacle must be connected to appropriate

branch circuit/mains protection (fuse or circuit breaker). Connection to any other type of receptacle may result in a shock
hazard.

CAUTION! Deenergizing Safety

• If the equipment has an internal energy source (the battery), the output may be energized when the unit is not connected to

an AC power outlet.

• To deenergize pluggable equipment: first press the Off button for more than one second to switch the equipment off. Next

disconnect the equipment from the AC power outlet. Finally, disconnect the battery.

• To deenergize permanently wired equipment: set the power switch to standby . Next set the AC circuit breaker to

standby . Then disconnect the batteries (including any expansion units). Finally, disconnect the AC power from the
building power supply.

• Pluggable equipment includes a protective earth conductor which carries the leakage current from the load devices

(computer equipment). Total leakage current must not exceed 3.5 mA.

• Use of this equipment in life support applications where failure of this equipment can reasonably be expected to cause the

failure of the life support equipment or to significantly effect its safety or effectiveness is not recommended.

WARNING! Battery Safety

• This equipment contains potentially hazardous voltages. Do not attempt to disassemble the unit. The only exception is

for equipment containing batteries. Battery replacement using the procedures below is permissible. Except for the battery,
the unit contains no user serviceable parts. Repairs are performed only by factory trained service personnel.

Batteries must be recycled. Deliver the battery to an appropriate recycling facility or ship it to the supplier in the
new battery’s packing material. See the new battery instructions for more information.

• Do not dispose of batteries in a fire. The batteries may explode.

• Do not open or mutilate batteries. They contain an electrolyte which is toxic and harmful to the skin and eyes.

• To avoid personal injury due to energy hazard, remove wrist watches and jewelry such as rings when replacing the batteries.

Use tools with insulated handles.

• Replace batteries with the same number and type of batteries as originally installed in the equipment.

Handling Safety

⇒ <18 kg (<40 lb.)

⇒ 18-32 kg (40-70 lb.)

• Be careful. Do not lift heavy loads without assistance.

• Equipment with casters is built to move on a smooth surface without any obstacles.

• Do not use a ramp inclined at more than 10°.

• This equipment is intended for installation in a temperature-controlled (0° - 40° C) indoor area, free of conductive

contaminants.

⇒ 32-55 kg (70-120 lb.)

⇒ >55 kg (>120 lb.)

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