MYERS MP Series, Инструкция по установке, эксплуатации и обслуживанию

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The traffic signal cabinet is powered continuously when a MP2000E system is installed.
The system allows connection for the normal utility power using standard terminal blocks
or an optional generator power via standard 30 Amp. (optional 50 Amp) generator
receptacle. The optional bypass switch redirects utility power to the load and allows the
BBS to be removed for service on a temporary or permanent basis without disrupting the
operation of the traffic signal.
With a fully functioning BBS system, the PTS allows utility power to flow out to the traffic
cabinet, when the utility line is qualified (within the acceptable range as programmed). If
the BBS is not functioning, the PTS will bypass the BBS allowing the utility to flow out to
the traffic cabinet. The BBS input is protected with one circuit breaker located on the PTS
as well as another one located on the BBS module. When the BBS internal BOOST and
BUCK is enabled, the PTS is activated allowing BBS to continuously boost the output
when input is lower, buck or lower the output when input is higher or run from batteries
when input power is outside the specified acceptable range. The PTS has dual NEMA
power receptacles for optional battery
heating pads, connecting a vacuum cleaner, or a PC for maintenance.
The smart, temperature compensated internal charger continuously monitors and
maintains the batteries in a fully charged state. For the protection of the battery, the
charging process is automatically discontinued when the battery temperature exceeds
50 o C . When the batteries are fully charged, the smart charger provides a continuously
pulsating ON-OFF trickle charge to keep the batteries topped-off or fully charged. When
input power is not qualified or is outside the acceptable range, the BBS derives the DC
power from the storage tank of four batteries connected in series and maintains output
power until the batteries are depleted down to a specified level or the utility power returns
within its specified levels. The traffic intersection will continue to operate in full operation
AND/OR in flash mode as programmed by the user. Programmable contacts allows the
user to place the intersection in flash mode as soon as the input power is lost or after the
batteries are depleted down to a certain capacity that is determined and programmed by
the user. The amount of back-up time battery power can provide depends on the Amp-
hour capacity of the batteries as well as the intersection watt load that requires support.