MP SERIES™ Battery Backup System for Traffic Signals: MP2000E System
Volume One: Operating Manual
Page 2-8
2.d Power Transfer Switch Description
The Power Transfer Switch (PTS) shown in Figure 2-10 allows the BBS to be removed for
service, replacement, or maintenance without interrupting power to the traffic cabinet.
Figure 2-10: Power Transfer Switch Front Panel
Description of Features Highlighted in Figure 2-10
The wires from the neutral and
ground bus of the traffic cabinet are
connected
The optional battery heater mat is
plugged into this receptacle.
The Input line power is connected to
the terminal block marked “L IN”.
The “UPS OUT” cord connects to the
MP2000E VAC output.
The Output power is connected to the
terminal block marked “L OUT”.
The PTS red wire (+) and black wire (-)
connect to the MP2000E front panel PTS
shell connector or PTS TB connection.
An optional surge suppressor,
external PC, or a vacuum cleaner may
be plugged into this receptacle.
The “UPS IN” cord connects to the
MP2000E VAC input.
The circuit breaker provides input
power protection for the MP2000E
BBS.
The dual receptacles are protected by this
circuit breaker.
2.e Battery Description
Myers EPS MP2000E is tailored toward the use and maintenance of lead-acid batteries;
typically 12V lead-acid batteries with absorbent glass mat (AGM) technology. Different Amp-
hour capacities or sizes of batteries can be used in the MP2000E system to provide various
backup times. Four batteries are connected in series for the required 48VDC. Contact
