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  DD740 DD740 Standby Power Supply  
       
 

DD740 Standby Power Supply

 
 

Wall mounting standby PSU

 
   
 

Utilising proven Thyristor technology, combined with its internal battery and alarm and metering options the DD740 is a rugged and reliable source of secure DC power.

 
       
 
  • Internal SLA battery
  • 30A Tripping Current
  • Battery Temperature Compensation
  • Manual battery Check
  • DC Current Metering
 
       
       
 

Electrical Data

   
   
 

Output Voltage:

 

Output Current Limit:

Input Voltage:

Input Frequency:

Input Current:

Voltage Regulation:

Output ripple:

Efficiency:

Battery:

24V / 30V (Nominal)
27.3V / 34.2V (Float @ 20°C)
5A
230VAC ±10%
50Hz ±5Hz
<1.5A
±2%
<2%
>80% at 35% to Full Load
19Ah

 
       
 

Mechanical Data

   
   
 

Dimensions:
Construction:
Weight:
Level of Protection:

600 x 425 x 370 mm (H x W x D)
Sheet steel wall mount enclusure
61kg with battery
IP42

 
       
 

Environmental Data

   
   
 

Cooling:
Temperature:

 

Relative humidity:
Altitude:
Safety:
EMC:

Natural Convection
-10 to +45°C operational
-25 to +60°C transport/storage
0 to 90% RH non-condensing
to 3000 metres
EN60950
Compliant

 
       
 

Protection

   
   
 

Fuses:

 

 

DC Fault:

 

Battery:

Input - 4A BS88 A1
Output - 32A BS88 A1
Battery - 32A BS88 A1
Output short circuit protection
Current Limited
Temperature compensation

 
       
 

Indicators & Alarms

   
   
 

Mains Present:
Charging:
DC Output Current:

Front panel LED indicator
Front panel LED indicator
72mm Analogue Meter

 
       
 

Other Features & Options

 
   
 






 
       
   
       
 


 
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