Operating instructions

2-8 Overview
Figure 2-8 illustrates the location of the LO/HI voltage selector and the FTEC surge protector on
the MPPS-II.
Figure 2-8
MBV3-100* power supply
460132-001
J1
TP1
TP2
R54
HI
LO
LO/HI
voltage
selector
FTEC
surge
protector
You must remove the MPPS-II cover to access the selector illustrated in Figure 2-8.
Section 3, “Amplifier Setup” explains changing the setting of this selector to meet system
requirements.
The power supply includes a fast-transfer electronic-crowbar (FTEC) surge protector. The FTEC
fires at approximately 245 V and presents a short circuit to the line during periods of over
voltage. After the AC input voltage returns to normal, the FTEC resumes its open state.
MBV3-100* Installation and Operation Manual