Zhone Technologies IMACS-200 - Manual (Page 39)

System Installation 2-13
System Installation Power and Grounding on the IMACS-200
2.5 Power and Grounding on the IMACS-200
2.5.1 Power Supply and Ringing Generator
The power supply and ringing generator system can consist of up to two power supplies, and
has one on-board ringing generator. The IMACS-200 comes with the proper power supplies
factory-assembled depending on the ordering information provided at the time of purchase.
2.5.1.1 Ringing Generator
The Ringing Generator on the IMACS-200 outputs 86Vrms at 20Hz. That is the output if
ringing into a 1 to 4 REN load. If the load increases, the built-in overload protection will
reduce the output voltage in steps as shown in Table 2-11.
This ability inherent in the IMACS-200 provides continuous service up to 12 North American
REN loads without distortion.
Following is more detailed information regarding the power inputs.
Table 2-11. Ringing Generator Load Versus REN
Output Ringing Amplitude
Load[1REN =
6930Ohms and 8
picoFarads]
86 Vrms 4REN
75 Vrms 5REN
70 Vrms 6REN
60 Vrms 8REN
50 Vrms 10REN
45 Vrms 12REN
Short Circuit Protection Active >>12REN