GE 300 Manual De Usuario

Descargar
Página de 38
 
GE
 
OPM_SGS_ISG_M22_M30_0US_V011.doc 
28/38
 Installation 
Guide 
SG Series 225 & 300 kVA 
3.8.5 Setup 
for 
SG Series when functioning as frequency converter 
 
When the 
SG Series is utilized for different  output frequency compared to the input 
frequency, the Automatic Bypass and Manual Bypass functions are disabled, therefore the 
Load cannot be transferred to Utility in case of overload, short circuit, or inverter failure. 
 
In situations where the UPS needs to be powered down for maintenance purposes, the 
critical Load must also be powered down during this time, the UPS cannot be transferred to 
Manual Bypass
, serious damage to the Load could result. 
 
 
Circuit breaker Q2 - Manual Bypass 
must be blocked in the open position, 
to avoid any accidental closure, by 
means of a padlock or a similar 
device, when the UPS is used as a 
frequency converter. 
 
As an added measure of safety the 
bus bar connections BR1,  BR2 and 
BR3 should also be removed. 
 
See Fig. 3.8.3-2
SG
S_225-
300_S
wi
tc
hes
 Q
2_01
Q2
Q1
 
Fig. 3.8.5-1   Switch Q2 – Manual Bypass
 
 
 
 
 
NOTE ! 
The standard 
SG Series UPS may be operated at 50Hz input with 60Hz 
output frequency conversion. 
It is recommended that the static switch bypass be electronically 
blocked if the UPS is to operated as a frequency converter in order to 
prevent damage to the load. 
Check with a Global Services Field Service Engineer to facilitate the 
parameter change. 
 
 
 
 
CAUTION ! 
The output transformer of the UPS is designed for 60Hz only. 
Operation at 50Hz, 480V output may overheat the transformer. 
The optional 5th harmonic filter is designed for 60Hz operation. 
If the UPS is purchased with this internal filter it may not be operated 
at 50Hz input or damage to the filter could result.