5.4 Overload Condition
The working principle of the UPS when overloading is illustrated as follows:
1. Generally modern day electronics & IT equipment generate an inrush current when switching
on. The amount of inrush current varies from equipment to equipment, some can be as high as
6 times its rated capacity while others produce negligible inrush. To prevent severe damage to
its Inverter cause by the inrush produce by the loads, the UPS is equipped with electronics
overload protection feature as standard. If the UPS loading is >105~120% of its capacity, it will
switch to bypass mode in 30 seconds to protect the Inverter. If overload condition is eliminated
by reducing the load to <105%, the UPS will switch back to Inverter mode automatically. If the
UPS is over 150% loading, it inverter will shutdown immediately.
2. The UPS Bypass loop is also equipped with overload protection. Its overload capacity is
illustrated by the graph & table below.
Fig 5.4 i-
L o a d ( % )
uo~iza
1 2 1 - Ш
131-135
136-145
146-143
149-157
158-176
177-1S7
1S8<
Delay Time
( S e t )
250
125
50
30
s
i
>
0.32
0.16
(Load %)
(sec)
Summary of Contents for 1000-3000VA
Page 13: ...4 3 Tower Configuration Setup Step 1 Step 2...
Page 14: ...Step 3 Step 4...
Page 15: ...4 4 Rack Mount Configuration Setup Step 3 Step 4 Step 5...
Page 16: ...Step 6 Step 7...
Page 19: ...4 5 6 Battery Replacement Step 1 Step 2 Step 3...
Page 20: ...Step 4...
Page 38: ...10 3 3 Installation Instructions Tower installation Stand alone unit Step 1 Step 2...
Page 39: ...Use with UPS Step 1 Step 2...
Page 40: ...10 3 4 Rack Mount installation Step 1 Step 2...
Page 41: ...Step 3 Step 4...
Page 42: ...Second Battery First Battery Bank UPS Connect DC Cable...
Page 44: ...Step 3 Step 4 10 3 7 Specifications...
Page 46: ...11 Technical Specifications...