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D:\manual\UM_PCM-WOW\UM_WOW-300(S)\661-WOW3-000-31.doc 

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A

PPENDIX A 

T

ROUBLESHOOTING

 

 

Problems Possible 

Cause 

Solution 

Full-time Bypass 

Protection 
outlets stop 

providing power 

to the equipment 

Circuit breaker button popped 

up as a result of overload. 

Unplug at least one piece of 

equipment from the Full-time 
Surge Protection outlets. 

Switch off UPS, wait 5 

seconds, reset the circuit 
breaker (press down breaker 

button), then switch on UPS. 

Battery undercharged or 

depleted due to frequent power 

outages. 

Recharge the battery by 

leaving the UPS plugged in 

and switched on. 

The power required by your 

equipment slightly exceeds the 

capacity of the UPS. 

Unplug at least one piece of 

equipment from the UPS 

outlets. 

UPS doesn’t 

perform to its 

expected 
runtime. 

The battery is slightly worn-out.  Consider replacing the 

battery. 

UPS is designed to prevent 

damage from flipping. 

Switch UPS off, wait for 5 

seconds, then switch UPS on. 

The battery is worn-out. 

Replace the battery the 

instructions in this manual. 

UPS cannot be 

turned on. 

 

Mechanical problem. 

Contact your sales 
representative. 

 

A

PPENDIX B 

S

PECIFICATIONS

 

 

MODEL 300 

300S 

UPS Capacity 

300VA 

300VA 

Total Capacity 
(Protection) 

1200VA 1200VA 

No. of sockets 

Style A,C UPSx3, Bypassx3, Style E,F,G,I UPS 

x2 , Byassx1 (Please refer the “output receptacle 

option”) 

Voltage (on battery) 

Simulated sine wave at 100V/ 110V/ 115V/ 120V/ 

220V/ 230V/ 240V +/-5% 

Frequency (on battery) 

50 or 60Hz +/- 0.3Hz 

OUTPUT 

Transfer Time 

2/4 milliseconds, including detection time 

Voltage (single phase) 

100V +20% /-15% at line input, 110V +22% 

/-18% at line input, 115V +/-20% at line input, 

120V +/-15% at line input, 220V +/-25% at line 

input, 230V +/-20% at line input, 240V 

+15%/-20% at line input 

INPUT 

Frequency   

50 or 60Hz +/- 10% (auto sensing) 

D:\manual\UM_PCM-WOW\UM_WOW-300(S)\661-WOW3-000-31.doc 

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Unit Input 

Circuit breaker or fuse for overload & short circuit 

protection 

Overload Protection 
 

AC Mode: If load exceeds 110% of nominal, 

Buzzer continue beeping sound   

Backup Mode: UPS automatic shutdown if 

overload exceeds 110% at 1 second   

Short Circuit 

UPS output cut off immediately   

PROTECTION 
 

Spike Protection 

480 Joules, 2ms 

Type 

Sealed, maintenance-free lead acid batteries, 

with 3-6 years typical lifetime 

Typical Recharge Time 
(to 90% of full capacity) 

4 hours   

Back-up Time 
(a PC with 15” monitor) 

4-6 minutes 

(a PC with 15” LCD 
monitor) 

8-12 minutes 

BATTERY 

Protection 

Over discharge protection, short circuit protection 

by fuse 

Net weight Kg (lbs) 

1.9 (4.2) 

PHYSICAL 

Dimension 
WxDxH(mm) 

100x315x68(3.9”x12.4”x2.7”) 

Dry contact 

NO 

Sends battery low & 

power failure signals, 

and receives shutdown 

signal from computer. 

INTERFACE 

RS-232 

NO 

Detect battery low, 

Schedule UPS on/off, 

AC input/output power 

status display. 

Battery Back-Up 

Slow beeping sound every 4 seconds 

Battery Low 

Rapid beeping sound every second 

Charger Abnormal 

AC Mode: Rapid beeping sound every 0.5 

second 

ALARM 

Overload Continue 

beeping sound 

Ambient operation 

3,500 meters max. elevation, 0-95% humidity 

non-condensing, 0-40

 

ENVIRONMEN

Audible Noise 

<40dBA (1 meter from surface) 

 
 
 
 

©

2002.April.29 Version 1.0 All right Reserved. 

All trademarks are property of their respective owners. Specifications subject to change 

without notice.

 

 
 
 

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