GE Multilin F650, Instruction Manual

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CHAPTER 3: HARDWARE 3.2 POWER SUPPLY
GEK-106310-AF F650 DIGITAL BAY CONTROLLER 3-3
3.2 Power supply
F650 can incorporate a simple or redundant power supply. The main and backup modules are identical.
In the case of a redundant power supply the two modules work in parallel continuously, distributing 50% of the load on
each, thus ensuring greater reliability and an instantaneous load transfer from a failed power supply to the backup,
without loss of time or module reset.
A contact relay connected to the low voltage side of the power supply monitors this voltage. The three contact terminals,
normally open, common, and normally closed, are available at the external connector terminals. The contact monitors the
power supply integrity and it is not controlled by the main microprocessor. In order to monitor whether the unit is ready to
protect (READY), an auxiliary output contacts in the unit should be programmed. This “fly-back” type power supply
provides high efficiency, stability and reliability and is available in two ranges, Hi and Low, in order to optimize efficiency
and general performance, including the capability to tolerate auxiliary voltage interruptions (dips).
Oversized components highly resistant to temperature are used. For example, all capacitors are specified to stand up to
105ºC, transformer components are specially designed to stand up to 180ºC, the MOSFET transistor has very low
resistance, supports high voltage and is refrigerated by an oversized heat sink. This allows temperatures over the 60ºC
shown in the Technical Characteristics section, and prolonged overloads such as those occurring at batteries in deep
charge mode (much higher than +15% voltage shown in the Technical Characteristics section).
High capacitance capacitors are also used, providing high tolerance to prolonged dips, 100ms, even in the most
unfavorable consumption conditions. This allows the relay to continue operating normally without undesired resets
leaving protection features offline.
Fuse Requirements:
Note: Contact technical support for further guidance.
NOTICE
Control power supplied to the relay must be connected to the matching power supply range of the
relay. If the voltage is applied to the wrong terminals, damage can occur.
NOTICE
The F650 relay contains electrolytic capacitors. These capacitors are well known to be subject to
deterioration over time if voltage is not applied periodically. Deterioration can be avoided by
powering the relays up once a year.
CAUTION
In the case of a blown fuse, replacement should be conducted by authorized/trained personnel
only. Use replacement fuses with the same characteristics.
V: 250 VAC
I: 2.5A
Size: 5 x 20 mm
Type: Quick acting (F)
UL listed miniature fuse