Lucent Technologies Lineage
®
 2000 ECS-12U Controller J85501E-2
Issue 3  July 1998  Product Description  2 - 21
the RIB and the rectifier adapter board (RAB). See “Rectifier 
Adapter Board (RAB)” in this section.
Controller 
Specifications 
Table 2-A: ECS-12U Controller Electrical Specifications
Float Voltage   
47.0 - 58.5 volts dc (48 volts dc nominal)
23.5 - 29.0 volts dc (24 volts dc nominal)
Operating Voltage     
40.0 - 60.0 volts dc (48 volts dc nominal)
20.0 - 30.0 volts dc (24 volts dc nominal)
Input Power       8 - 16 watts, depending on options provided 
Display Meter 
4-digit backlit LCD
Range: 
   0.00 to +/-60.00 V (voltmeter)
   0.0 to 8000.0 A(ammeter)
Accuracy: 
 +/-0.5% of full scale reading (ammeter)
 +/-0.05% of full scale reading (voltmeter)
Resolution: 
   +/-0.1 ampere < 1000 amperes
   +/- 1 ampere for ≥ 1000 amperes     
Plant Shunt     
50 millivolts at 300, 600, 1200, 2000, 2600, 
4000, 6000 or 8000 amperes 
Alarm Contact 
Rating 
60 volts dc, 1.0 ampere, Form C 
Temperature
32 to 122° F
(0 to 50°C)   
Altitude      
-200 to 13,000 feet (-61 to 3962 meters)
For altitudes of 5000 to 13,000 feet, derate 
maximum temperature by 3.6° F per 1000 
feet above 5000 feet.
For altitudes of 1524 to 3962 meters, derate 
maximum temperature by 0.656° C per 100 
meters above 1524 meters.
Humidity 10% to 95% noncondensing        
Electrostatic 
Discharge 
IEC 801-2 Level 5 (15kV) at 40% relative 
humidity         
Radiated and 
Conducted 
Emissions
FCC Level A        
Electromagnetic 
Immunity        
10 V/m over the range of 20 to 2000 MHz