GE Masoneilan 469 Series, Инструкция по эксплуатации

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1–18 469 MOTOR MANAGEMENT RELAY – INSTRUCTION MANUAL
CHAPTER 1: GETTING STARTED
– VT primary and secondary ratings
– System frequency
– System phase sequence
• Define the protection elements that will be enabled. Prepare a list of protection
functions including the following information. By default, all the protection functions
must be assumed “Disabled”:
– Pickup parameter
– Operating curve, if applicable
– Time dial or multiplier
– Any additional intentional time delay
– Directionality, if applicable
• Define how many output contacts will be energized in response to a given protection
function. Note that the 469 relay can be programmed to Trip or Alarm and, at the
same time, to energize one, a combination, or all the 2 auxiliary relays during the
process.
• Define if the output relays will be set as failsafe type.
• Define if the 469 relay will be used to start the motor. If so, gather information on the
required conditions to execute the command.
• Define if the 469 will be involved in the motor starting process, particularly on reduced
voltage start applications.
• Define if the 469 will be applied a multi speed applications.
• Define if the relay will be used to monitor the status of the starter or breaker. It is
strongly recommended that the 469 be always programmed to monitor the status of
the disconnecting device, by means of a dry contact connected to one of the digital
inputs of the relay. Use an auxiliary contact from the breaker or starter either a
normally open contact, 52a, which is normally in open position when the
disconnecting device is open, or a normally closed contact, 52b, which is in close
position when the breaker or starter is open.
• If the 469 will be used to respond to digital inputs, record the following information:
– Digital Input name
– Condition by which the digital input would be considered asserted
– Function that the digital input will initiate within the 469
• If the 469 will be used to perform monitoring functions and act upon certain
conditions, record information such as:
– minimum and maximum values
– alarm and trip values
– time delays
• It is important to familiarize yourself with the relay protection and control functions
before setting up the relay.