Arcteq Generator Commander, Instruction Manual

Page: 205 / 561

Name Range Step Default Description
Time
constants
0: Single
1: Multiple
- 0: Single
The selection of whether the thermal replica uses single or multiple heating
and cooling time constants. If "Single" is selected, only the time constants
Long heating (cold) and Long cool Stop are shown. If "Multiple" is selected,
all available time constants are shown.
Estimate
short TC
and
timings
0: Set manually
1: Estimate
(online)
-
0: Set
manually
The selection of whether the relay estimates short time constants for
heating and cooling. It also selects the timing for short and long time
constants when the motor is stopped.
Long
heat T
const
(cold)
0…500.0min 1.0min 10.0min
The setting for the long heating time constant. This setting is for
"Cold" motor conditions and is used when the calculated thermal capacity
is below the set value for "Hot condition theta limit".
Long
heat T
const
(hot)
0…500.0min 1.0min 10.0min
The setting for the long heating time constant. This setting is for
"Hot" motor conditions and is used when the calculated thermal capacity is
above the set value for "Hot condition theta limit". This setting can be
modified for when the motor's thermal characteristics vary between
"hot" and "cold" situation. If the characteristics do not change, this setting
should be the same as the setting value of "Long heat T const (cold)". This
setting is visible when the time constant option "Multiple” is selected.
Long
cool T
const
Run
0…3000.0min 1.0min 10.0min
The setting for the long cooling time constant for the "Run" condition of the
motor. When the motor cools while running, its time constant is not the
same as the stopped cooling constant but instead typically a lot shorter
(since the motor cooling fan is active). This setting may need the testing of
the motor cooling characteristics. If unknown, this setting should be the
same as the setting value of "Long Cool T const Stop" (slower cooling) or
"Long heat T const" (faster cooling). This setting is visible when the time
constant option "Multiple" is selected.
Long
cool T
const
Stop
0…3000.0min 1.0min 10.0min
The setting for the stopped motor cooling time constant. When the motor is
stopped, the thermal replica calculates the cooling according to this
setting value. Typically this time constant is about 2.5 – 3.5 times the
heating time constant.
Short
heat T
const
(cold)
0…500.0min 1.0min 10.0min
The setting for short heating time constant for "cold" motor status. This
time constant defines the locked rotor and stalled tripping curve selection.
While this setting is not the safe stall time directly, it defines the used
tripping curve for the locked rotor condition. This setting is visible when the
time constants option "Multiple" and the "Set manually" option from
"Estimate short TC and timings" are both selected.
Short
heat T
const
(cold) est
0…500.0min 1.0min 10.0min
The estimated setting for short heating time constant for "cold" motor
status. This time constant defines the locked rotor and stalled tripping
curve selection. This setting value is calculated based on the information
given by the locked rotor current (LRC) and the cold safe stall time. This
setting value is visible when the time constants option "Multiple" and the
"Estimate" option from "Estimate short TC and timings" are both selected.
Short
heat T
const
(hot)
0…500.0min 1.0min 10.0min
The setting for short heating time constant for "hot" motor status. This time
constant defines the locked rotor and stalled tripping curve selection. While
this setting is not the safe stall time directly, it defines the used tripping
curve for the locked rotor condition. This setting is visible when the time
constants option "Multiple" and the "Set manually" option from "Estimate
short TC and timings" are both selected.
Short
heat T
const
(hot) est
0…500.0min 1.0min 10.0min
The estimated setting for short heating time constant for "hot" motor status.
This time constant defines the locked rotor and stalled tripping curve
selection. This setting value is calculated based on the information given by
the LRC and the hot safe stall time. This setting value is visible when the
time constants option "Multiple" and the "Estimate" option from "Estimate
short TC and timings" are both selected.
Short
cool T
const
0…3000.0min 1.0min 10.0min
The setting for the short cooling time constant. This value is the same for
both running and stopped conditions, and typically it is the same between
heating and cooling. This setting is visible when the time constants option
"Multiple" and the "Set manually" option from "Estimate short TC and
timings" are both selected.
Genera Generattor Commander or Commander
Instruction manual
Version: 2.07
© Arcteq Relays Ltd
IM00001 203