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MODEL 365A & E365A VIBRASWITCHES
Section 1 – DESCRIPTION
1.1 GENERAL
The Model 365A and E365A Vibraswitches provide
maximum
protection
compressors, and other rotating equipment by
responding to mechanical malfunctions the instant
they occur. Failing bearings, bent shafts, broken
blades, overspeeding and similar malfunctions cause
increased imbalance or high frequency vibration
detectable
with
the
Vibraswitches. The instruments may be wired to
actuate an alarm or cause a shutdown before costly
damage
occurs.
They
maintenance-free service in permanent installations.
The
Vibraswitches
are
instruments.
Acceleratory measurements made by
the Vibraswitches are the summation of all the
individual accelerations giving a total destructive force
acting on the machine - the result is positive
protection.
Vibraswitches may be supplied with or without a reset
coil. Reset coils may be used with external time delays
for preventing false trips on those machines with
excessive start-up vibration by applying the rated
voltage during machine start-up (for 4 minutes
maximum). Reset coils may also be used to reset the
Vibraswitch from a remote location by applying the
rated voltage.
Space heaters are intended to prevent condensation
in the enclosure caused by climate conditions in some
outdoor installations. Space heaters require constant
power and are not required in most applications.
With the growing use of computers, an increasing
number of applications are coming into existence
where a Vibraswitch will be connected to a computer
or PLC.
In these applications the voltage and/or
current may be too low for standard contacts. For
these applications the Model 365A and E365A may be
supplied with an optional sealed switch with gold
contacts.
The Vibraswitch may be used in conjunction with the
Model 563A Monitor This Monitor is designed to "sort-
out" false signals received by the Vibraswitch so that
Alarm and/or Shutdown will not result from false
transient disturbances.
for
large
motors, pumps,
Model
365A
and
E365A
are
designed
acceleration
sensitive
1.2 MODEL IDENTIFICATION
Identify Vibraswitch models in accordance with the
descriptions and variations listed in each table.
Key Model No.
Table 1 – Switch Contacts
Table 2 – Reset Coil
Table 3 – Special Options
for
Model No.
Vibraswitch, UL Certified for the U.S.A. &
365A
c-UL Certified for Canada.
Vibraswitch, CE (ATEX) Certified for
E365A
Europe, UL Certified for the U.S.A. &
c-UL Certified for Canada.
Table 1 – SWITCH CONTACTS
Desig.
SPDT – Single pole, double throw load
A
contacts.
DPDT – 2 gang mounted SPDT load
D
switches.
DPDT – 2 gang mounted SPDT sealed
G
switches with gold contacts for low
voltage/current applications.
Table 2 – RESET COIL
Desig.
0
No reset coil
2
24 volt DC reset coil
3*
240 volt AC reset coil.
4
48 volt DC reset coil
7
117 volt DC reset coil
8
120 volt AC reset coil
* Not Agency Certified. Not available with model E365A.
Table 3 – SPECIAL OPTIONS
Desig.
No special options. Enclosure 4 & IP66,
Omit
unpainted aluminum.
Enclosure 4X & IP66, exterior painted with
E
gray epoxy enamel.
Space heater installed for maintaining
H
internal area of enclosure moisture free.
Enclosure 4X & IP66, exterior painted with
gray epoxy enamel, and space heater
EH
installed for maintaining internal area of
enclosure moisture free.
- 1 -
365A - A 8 - H
KEY MODEL NO.
Description
Description
Description
Description
909GF294G
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