-
Thermal characteristic warming condition at diabatic
I
I
Thermal characteristic warming condition at adiabatic behavior (I
During this condition, the dissipated heat is equal to heat generated by the current
flowing through the protected object.
The thermal model for this conditions is as follow:
I
I
When the current reduces compared to
it results into cooling of an apparatus.
Cooling condition is defined when:
The thermal model used during cooling condition for standing objects (cable /
transformer / standing motor) is:
Thermal characteristic warming condition at diabatic
1
= new value of thermal image
0
= present value of thermal image
= maximum value of measured phase currents
= base current (rated current/full load current defined by setting).
t
Thermal characteristic warming condition at adiabatic behavior (I
During this condition, the dissipated heat is equal to heat generated by the current
flowing through the protected object.
The thermal model for this conditions is as follow:
1
= new value of thermal image
0
= present value of thermal image
= maximum value of measured phase currents
= base current (rated current/full load current defined by setting).
When the current reduces compared to
it results into cooling of an apparatus.
Cooling condition is defined when:
The thermal model used during cooling condition for standing objects (cable /
transformer / standing motor) is:
Thermal characteristic warming condition at diabatic
= new value of thermal image
= present value of thermal image
= maximum value of measured phase currents
= base current (rated current/full load current defined by setting).
Thermal characteristic warming condition at adiabatic behavior (I
Constant thermal image of protected object:
During this condition, the dissipated heat is equal to heat generated by the current
flowing through the protected object.
The thermal model for this conditions is as follow:
= new value of thermal image
= present value of thermal image
= maximum value of measured phase currents
= base current (rated current/full load current defined by setting).
Cooling of protected object:
When the current reduces compared to
it results into cooling of an apparatus.
Cooling condition is defined when:
The thermal model used during cooling condition for standing objects (cable /
transformer / standing motor) is:
Thermal characteristic warming condition at diabatic
= new value of thermal image
= present value of thermal image
= maximum value of measured phase currents
= base current (rated current/full load current defined by setting).
Thermal characteristic warming condition at adiabatic behavior (I
Constant thermal image of protected object:
During this condition, the dissipated heat is equal to heat generated by the current
flowing through the protected object.
The thermal model for this conditions is as follow:
= new value of thermal image
= present value of thermal image
= maximum value of measured phase currents
= base current (rated current/full load current defined by setting).
Cooling of protected object:
When the current reduces compared to
it results into cooling of an apparatus.
Cooling condition is defined when:
The thermal model used during cooling condition for standing objects (cable /
transformer / standing motor) is:
Thermal characteristic warming condition at diabatic
= new value of thermal image
= present value of thermal image
= maximum value of measured phase currents
= base current (rated current/full load current defined by setting).
Thermal characteristic warming condition at adiabatic behavior (I
Constant thermal image of protected object:
During this condition, the dissipated heat is equal to heat generated by the current
flowing through the protected object.
The thermal model for this conditions is as follow:
∗
= new value of thermal image
= present value of thermal image
= maximum value of measured phase currents
= base current (rated current/full load current defined by setting).
Cooling of protected object:
When the current reduces compared to
it results into cooling of an apparatus.
Cooling condition is defined when:
∗
The thermal model used during cooling condition for standing objects (cable /
transformer / standing motor) is:
Thermal characteristic warming condition at diabatic
= new value of thermal image
= present value of thermal image
= maximum value of measured phase currents
= base current (rated current/full load current defined by setting).
Thermal characteristic warming condition at adiabatic behavior (I
IED is defined by a setting
Constant thermal image of protected object:
During this condition, the dissipated heat is equal to heat generated by the current
flowing through the protected object.
The thermal model for this conditions is as follow:
= new value of thermal image
= present value of thermal image
= maximum value of measured phase currents
= base current (rated current/full load current defined by setting).
Cooling of protected object:
When the current reduces compared to
it results into cooling of an apparatus.
Cooling condition is defined when:
The thermal model used during cooling condition for standing objects (cable /
transformer / standing motor) is:
Thermal characteristic warming condition at diabatic
= new value of thermal image
= present value of thermal image
= maximum value of measured phase currents
= base current (rated current/full load current defined by setting).
Thermal characteristic warming condition at adiabatic behavior (I
∗
IED is defined by a setting
Constant thermal image of protected object:
During this condition, the dissipated heat is equal to heat generated by the current
flowing through the protected object.
The thermal model for this conditions is as follow:
= new value of thermal image
= present value of thermal image
= maximum value of measured phase currents
= base current (rated current/full load current defined by setting).
Cooling of protected object:
When the current reduces compared to
it results into cooling of an apparatus.
Cooling condition is defined when:
The thermal model used during cooling condition for standing objects (cable /
transformer / standing motor) is:
Thermal characteristic warming condition at diabatic
= new value of thermal image
= present value of thermal image
= maximum value of measured phase currents
= base current (rated current/full load current defined by setting).
Thermal characteristic warming condition at adiabatic behavior (I
∆
↑
IED is defined by a setting
Constant thermal image of protected object:
During this condition, the dissipated heat is equal to heat generated by the current
flowing through the protected object.
The thermal model for this conditions is as follow:
= new value of thermal image
= present value of thermal image
= maximum value of measured phase currents
= base current (rated current/full load current defined by setting).
Cooling of protected object:
When the current reduces compared to
it results into cooling of an apparatus.
Cooling condition is defined when:
The thermal model used during cooling condition for standing objects (cable /
transformer / standing motor) is:
Thermal characteristic warming condition at diabatic
= new value of thermal image
= present value of thermal image
= maximum value of measured phase currents
= base current (rated current/full load current defined by setting).
Thermal characteristic warming condition at adiabatic behavior (I
IED is defined by a setting
Constant thermal image of protected object:
During this condition, the dissipated heat is equal to heat generated by the current
flowing through the protected object.
The thermal model for this conditions is as follow:
= new value of thermal image
= present value of thermal image
= maximum value of measured phase currents
= base current (rated current/full load current defined by setting).
Cooling of protected object:
When the current reduces compared to
it results into cooling of an apparatus.
Cooling condition is defined when:
The thermal model used during cooling condition for standing objects (cable /
transformer / standing motor) is:
Thermal characteristic warming condition at diabatic
= new value of thermal image
= present value of thermal image
= maximum value of measured phase currents
= base current (rated current/full load current defined by setting).
Thermal characteristic warming condition at adiabatic behavior (I
IED is defined by a setting
Constant thermal image of protected object:
During this condition, the dissipated heat is equal to heat generated by the current
flowing through the protected object.
The thermal model for this conditions is as follow:
= new value of thermal image
= present value of thermal image
= maximum value of measured phase currents
= base current (rated current/full load current defined by setting).
Cooling of protected object:
When the current reduces compared to
it results into cooling of an apparatus.
Cooling condition is defined when:
The thermal model used during cooling condition for standing objects (cable /
transformer / standing motor) is:
Thermal characteristic warming condition at diabatic
= new value of thermal image
= present value of thermal image
= maximum value of measured phase currents
= base current (rated current/full load current defined by setting).
0
Thermal characteristic warming condition at adiabatic behavior (I
0
at the start of the function (i.e. at power on of the
IED is defined by a setting
Constant thermal image of protected object:
During this condition, the dissipated heat is equal to heat generated by the current
flowing through the protected object.
The thermal model for this conditions is as follow:
= new value of thermal image
= present value of thermal image
= maximum value of measured phase currents
= base current (rated current/full load current defined by setting).
Cooling of protected object:
When the current reduces compared to
it results into cooling of an apparatus.
Cooling condition is defined when:
The thermal model used during cooling condition for standing objects (cable /
transformer / standing motor) is:
Thermal characteristic warming condition at diabatic
= new value of thermal image
= present value of thermal image
= maximum value of measured phase currents
= base current (rated current/full load current defined by setting).
Thermal characteristic warming condition at adiabatic behavior (I
at the start of the function (i.e. at power on of the
IED is defined by a setting
Constant thermal image of protected object:
During this condition, the dissipated heat is equal to heat generated by the current
flowing through the protected object.
The thermal model for this conditions is as follow:
= new value of thermal image
= present value of thermal image
= maximum value of measured phase currents
= base current (rated current/full load current defined by setting).
Cooling of protected object:
When the current reduces compared to
it results into cooling of an apparatus.
Cooling condition is defined when:
The thermal model used during cooling condition for standing objects (cable /
transformer / standing motor) is:
Thermal characteristic warming condition at diabatic
∆
= present value of thermal image
= maximum value of measured phase currents
= base current (rated current/full load current defined by setting).
1
Thermal characteristic warming condition at adiabatic behavior (I
at the start of the function (i.e. at power on of the
IED is defined by a setting
Constant thermal image of protected object:
During this condition, the dissipated heat is equal to heat generated by the current
flowing through the protected object.
The thermal model for this conditions is as follow:
= present value of thermal image
= maximum value of measured phase currents
= base current (rated current/full load current defined by setting).
Cooling of protected object:
When the current reduces compared to
it results into cooling of an apparatus.
Cooling condition is defined when:
The thermal model used during cooling condition for standing objects (cable /
Protection and Control Function
Thermal characteristic warming condition at diabatic
= maximum value of measured phase currents
= base current (rated current/full load current defined by setting).
Thermal characteristic warming condition at adiabatic behavior (I
at the start of the function (i.e. at power on of the
IED is defined by a setting
Constant thermal image of protected object:
During this condition, the dissipated heat is equal to heat generated by the current
flowing through the protected object.
The thermal model for this conditions is as follow:
= maximum value of measured phase currents
= base current (rated current/full load current defined by setting).
When the current reduces compared to
previous condition or the motor has stopped
it results into cooling of an apparatus.
The thermal model used during cooling condition for standing objects (cable /
Protection and Control Function
Thermal characteristic warming condition at diabatic
= maximum value of measured phase currents
= base current (rated current/full load current defined by setting).
Thermal characteristic warming condition at adiabatic behavior (I
at the start of the function (i.e. at power on of the
IED is defined by a setting
Constant thermal image of protected object:
During this condition, the dissipated heat is equal to heat generated by the current
The thermal model for this conditions is as follow:
= maximum value of measured phase currents
= base current (rated current/full load current defined by setting).
previous condition or the motor has stopped
The thermal model used during cooling condition for standing objects (cable /
Protection and Control Function
Thermal characteristic warming condition at diabatic
= maximum value of measured phase currents
= base current (rated current/full load current defined by setting).
Thermal characteristic warming condition at adiabatic behavior (I
at the start of the function (i.e. at power on of the
Constant thermal image of protected object:
During this condition, the dissipated heat is equal to heat generated by the current
The thermal model for this conditions is as follow:
= maximum value of measured phase currents
= base current (rated current/full load current defined by setting).
previous condition or the motor has stopped
The thermal model used during cooling condition for standing objects (cable /
Protection and Control Function
Thermal characteristic warming condition at diabatic
= maximum value of measured phase currents
= base current (rated current/full load current defined by setting).
Thermal characteristic warming condition at adiabatic behavior (I
at the start of the function (i.e. at power on of the
Constant thermal image of protected object:
During this condition, the dissipated heat is equal to heat generated by the current
The thermal model for this conditions is as follow:
= maximum value of measured phase currents
= base current (rated current/full load current defined by setting).
previous condition or the motor has stopped
The thermal model used during cooling condition for standing objects (cable /
Protection and Control Function
Thermal characteristic warming condition at diabatic
= base current (rated current/full load current defined by setting).
Thermal characteristic warming condition at adiabatic behavior (I
at the start of the function (i.e. at power on of the
Constant thermal image of protected object:
During this condition, the dissipated heat is equal to heat generated by the current
The thermal model for this conditions is as follow:
= base current (rated current/full load current defined by setting).
previous condition or the motor has stopped
The thermal model used during cooling condition for standing objects (cable /
Protection and Control Function
Thermal characteristic warming condition at diabatic
= base current (rated current/full load current defined by setting).
Thermal characteristic warming condition at adiabatic behavior (I
at the start of the function (i.e. at power on of the
During this condition, the dissipated heat is equal to heat generated by the current
= base current (rated current/full load current defined by setting).
previous condition or the motor has stopped
The thermal model used during cooling condition for standing objects (cable /
Protection and Control Function
= base current (rated current/full load current defined by setting).
Thermal characteristic warming condition at adiabatic behavior (I
at the start of the function (i.e. at power on of the
During this condition, the dissipated heat is equal to heat generated by the current
= base current (rated current/full load current defined by setting).
previous condition or the motor has stopped
The thermal model used during cooling condition for standing objects (cable /
Protection and Control Function
= base current (rated current/full load current defined by setting).
Thermal characteristic warming condition at adiabatic behavior (I
at the start of the function (i.e. at power on of the
During this condition, the dissipated heat is equal to heat generated by the current
= base current (rated current/full load current defined by setting).
previous condition or the motor has stopped
The thermal model used during cooling condition for standing objects (cable /
Protection and Control Function
= base current (rated current/full load current defined by setting).
Thermal characteristic warming condition at adiabatic behavior (I
at the start of the function (i.e. at power on of the
During this condition, the dissipated heat is equal to heat generated by the current
= base current (rated current/full load current defined by setting).
previous condition or the motor has stopped
The thermal model used during cooling condition for standing objects (cable /
Protection and Control Function
= base current (rated current/full load current defined by setting).
Thermal characteristic warming condition at adiabatic behavior (I
at the start of the function (i.e. at power on of the
During this condition, the dissipated heat is equal to heat generated by the current
= base current (rated current/full load current defined by setting).
previous condition or the motor has stopped
The thermal model used during cooling condition for standing objects (cable /
Protection and Control Function
b
):
= base current (rated current/full load current defined by setting).
I
b
at the start of the function (i.e. at power on of the
During this condition, the dissipated heat is equal to heat generated by the current
= base current (rated current/full load current defined by setting).
previous condition or the motor has stopped
The thermal model used during cooling condition for standing objects (cable /
Protection and Control Function
at the start of the function (i.e. at power on of the
During this condition, the dissipated heat is equal to heat generated by the current
previous condition or the motor has stopped
The thermal model used during cooling condition for standing objects (cable /
Protection and Control Function
at the start of the function (i.e. at power on of the
During this condition, the dissipated heat is equal to heat generated by the current
previous condition or the motor has stopped
The thermal model used during cooling condition for standing objects (cable /
Protection and Control Function
at the start of the function (i.e. at power on of the
During this condition, the dissipated heat is equal to heat generated by the current
previous condition or the motor has stopped
The thermal model used during cooling condition for standing objects (cable /
Protection and Control Function
at the start of the function (i.e. at power on of the
During this condition, the dissipated heat is equal to heat generated by the current
previous condition or the motor has stopped
Protection and Control Function
previous condition or the motor has stopped
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