PRODUCT SHOW
SAI-208D mother of the protection and control devices
1 . Function Deployment
Protection Model SAI-208DD
Three- phase overcurrent definite time √
Inverse phase overcurrent ( in general, very, extremely ) √
Overload alarm and trip protection √
Mother of the white charging protection √
2 . Description
2.1 Three- white overcurrent
The three sections of white over-current protection device is provided , Ⅰ, Ⅱ, Ⅲ fixed time limit, and white can also inverse time overcurrent protection . Either definite time or inverse time , each segment cast back control value (I1nf, I2nf, I3nf) can be controlled independently of each segment usage. Cast back control setpoint value means:
0 : Exit 1 : Inputs
Three sections with a soft white plate overcurrent protection , only soft plate and cast back into the control values are given , the corresponding stages before investment.
2.1.1 Inverse time characteristics
White overcurrent protection characteristics selection setting Ifsx be selected for definite time or inverse time protection:
0 : Exit , 1,2,3 : Inverse time ( corresponding to the following ( 1 ) , ( 2 ) and ( 3) ) .
Choose to use one of the following three criteria inverse time characteristics . Inverse time characteristics for the current reference value IP and white inverse time protection current reference value Ii, tP inverse characteristic time constant for the white anti-time protection time constant tIi.
Normal inverse characteristics :
Very inverse characteristics :
Extremely inverse characteristics :
2.2 interphase charge protection
This unit has white charging protection , overcharge protection plate with a soft , protective cast while charging back with a white value Icdnf control . Only soft cast back plate and the control inputs are given value , the protection was put into . Icdnf values have the following meanings :
0 : Exit 1 : Inputs
When charged the bus to an empty bus closing charge , if the mother has an empty failure to maintain system stability, need to quickly jump mother of the switch . Charging protection setting value on the more sensitive, very short delay in the outlet protection with a different value . In order to avoid system failure during normal operation so that the loss of selectivity malfunction , charging protection only after the mother of the switch from the open period of change together , this time by the user charging protection through automatic withdrawal limit tCD tuning, then automatically exit.
2.3 Overload protection
Overload protection device cast back control setpoint values Igfhnf meaning :
0 : Exit 1 to 2: inputs - 1: Alarm , 2 : Trip
Overload trip protection features soft plate, pressure plate and throw only soft values are given back control inputs , the corresponding trip protection only cast
Income ; overload alarm input control word can only generate an alarm event .
2.4 System abnormal condition alarm and lockout
2.4.1 Control loop break alarm
TWJ and HWJ same time is 1 or 0 , after the alarm delay .
3 . Device tuning
Including soft plate tuning device , the device settings and device parameters in three areas , see 3.1, 3.2 and 3.3 .
Tuning should follow the relevant regulations , the device has special requirements in the relevant notes. Device parameters without special needs , it is desirable default values listed in the table . No protection, it should control the value to 0 - exit.
3.1 Soft- plate tuning device
Model
SAI-208DD
Three sections of white over-current protection
√
Overload trip protection
√
Mother of charge protection
√
Note : Soft plate only two values: inputs, quit. When the device is shipped , soft plate are tuning to quit.
3.2 Device setting value
No.
Name
Symbol
Tuning range
Remark
1
Phase
Between
Live
Flow
Insurance
Protect
Segment Ⅰ
Section Ⅰ white protective cast back control
I1nf
2
White segment Ⅰ current value
I1
0.5 ~ 100A
3
White segment Ⅰ delay setting
tI1
0.01 ~ 9.99S
4
Section Ⅱ
White protective cast back control section Ⅱ
I2nf
5
White Ⅱ segment current value
I2
0.5 ~ 100A
6
White Ⅱ segment delay value
tI2
0.01 ~ 9.99S
7
Ⅲ section
White protective cast back control section Ⅲ
I3nf
8
White Ⅲ segment current value
I3
0.5 ~ 100A
9
White Ⅲ segment delay value
tI3
0.01 ~ 99.99S
10
Inverse
White inverse time protection and value characteristics control
Ifsx
0-3
Note 1
11
White inverse time protection current reference value
Ii
0.5 ~ 100A
12
White anti-time protection time constant
tIi
0.1 ~ 99.99S
13
Public value
Low phase overcurrent closed lock value
ULbs
2 ~ 120V
Invalid
14
Overload
Protection
Overload protection cast back control
Igfhnf
0-2
Note 2
15
Overload current value
Igfh
0.5 ~ 100A
16
Overload time delay setting
tIgfh
0.1 ~ 99.99S
17
Charging protection
Charging time protection automatically exit
tCD
0.01 ~ 9.99S
18
White cast back control charging protection
Icdnf
19
White charging current value
Icd
0.5 ~ 100A
20
White charging delay setting
tIcd
0.01 ~ 9.99S
Note :. 1 Ifsx values have the following meanings :
0 : Exit 1 to 3 : Inverse - 1: General , 2 : very , 3: Extreme
. 2 Igfhnf values have the following meanings :
0 : Exit 1 to 2: inputs - 1: Alarm 2 : Trip
3.3 device parameter tuning
No.
Name
Symbol
Range
1
Device -level management
The mailing address of the device
ADDR
1 ~ 110
2
Operation of the device password
PASSWORD
0 to 99
3
Baud Rate
Baud Rate Setting
BTL
0 to 9
4
Exchange amount ratings
CT primary current rating
Sec.IN
0 ~ 65535A
5
PT primary current rating
Sec.UN
0 ~ 999.9KV
4 . Protection Principle wiring diagram
Protection Model SAI-208DD
Three- phase overcurrent definite time √
Inverse phase overcurrent ( in general, very, extremely ) √
Overload alarm and trip protection √
Mother of the white charging protection √
2 . Description
2.1 Three- white overcurrent
The three sections of white over-current protection device is provided , Ⅰ, Ⅱ, Ⅲ fixed time limit, and white can also inverse time overcurrent protection . Either definite time or inverse time , each segment cast back control value (I1nf, I2nf, I3nf) can be controlled independently of each segment usage. Cast back control setpoint value means:
0 : Exit 1 : Inputs
Three sections with a soft white plate overcurrent protection , only soft plate and cast back into the control values are given , the corresponding stages before investment.
2.1.1 Inverse time characteristics
White overcurrent protection characteristics selection setting Ifsx be selected for definite time or inverse time protection:
0 : Exit , 1,2,3 : Inverse time ( corresponding to the following ( 1 ) , ( 2 ) and ( 3) ) .
Choose to use one of the following three criteria inverse time characteristics . Inverse time characteristics for the current reference value IP and white inverse time protection current reference value Ii, tP inverse characteristic time constant for the white anti-time protection time constant tIi.
Normal inverse characteristics :
Very inverse characteristics :
Extremely inverse characteristics :
2.2 interphase charge protection
This unit has white charging protection , overcharge protection plate with a soft , protective cast while charging back with a white value Icdnf control . Only soft cast back plate and the control inputs are given value , the protection was put into . Icdnf values have the following meanings :
0 : Exit 1 : Inputs
When charged the bus to an empty bus closing charge , if the mother has an empty failure to maintain system stability, need to quickly jump mother of the switch . Charging protection setting value on the more sensitive, very short delay in the outlet protection with a different value . In order to avoid system failure during normal operation so that the loss of selectivity malfunction , charging protection only after the mother of the switch from the open period of change together , this time by the user charging protection through automatic withdrawal limit tCD tuning, then automatically exit.
2.3 Overload protection
Overload protection device cast back control setpoint values Igfhnf meaning :
0 : Exit 1 to 2: inputs - 1: Alarm , 2 : Trip
Overload trip protection features soft plate, pressure plate and throw only soft values are given back control inputs , the corresponding trip protection only cast
Income ; overload alarm input control word can only generate an alarm event .
2.4 System abnormal condition alarm and lockout
2.4.1 Control loop break alarm
TWJ and HWJ same time is 1 or 0 , after the alarm delay .
3 . Device tuning
Including soft plate tuning device , the device settings and device parameters in three areas , see 3.1, 3.2 and 3.3 .
Tuning should follow the relevant regulations , the device has special requirements in the relevant notes. Device parameters without special needs , it is desirable default values listed in the table . No protection, it should control the value to 0 - exit.
3.1 Soft- plate tuning device
Model
SAI-208DD
Three sections of white over-current protection
√
Overload trip protection
√
Mother of charge protection
√
Note : Soft plate only two values: inputs, quit. When the device is shipped , soft plate are tuning to quit.
3.2 Device setting value
No.
Name
Symbol
Tuning range
Remark
1
Phase
Between
Live
Flow
Insurance
Protect
Segment Ⅰ
Section Ⅰ white protective cast back control
I1nf
2
White segment Ⅰ current value
I1
0.5 ~ 100A
3
White segment Ⅰ delay setting
tI1
0.01 ~ 9.99S
4
Section Ⅱ
White protective cast back control section Ⅱ
I2nf
5
White Ⅱ segment current value
I2
0.5 ~ 100A
6
White Ⅱ segment delay value
tI2
0.01 ~ 9.99S
7
Ⅲ section
White protective cast back control section Ⅲ
I3nf
8
White Ⅲ segment current value
I3
0.5 ~ 100A
9
White Ⅲ segment delay value
tI3
0.01 ~ 99.99S
10
Inverse
White inverse time protection and value characteristics control
Ifsx
0-3
Note 1
11
White inverse time protection current reference value
Ii
0.5 ~ 100A
12
White anti-time protection time constant
tIi
0.1 ~ 99.99S
13
Public value
Low phase overcurrent closed lock value
ULbs
2 ~ 120V
Invalid
14
Overload
Protection
Overload protection cast back control
Igfhnf
0-2
Note 2
15
Overload current value
Igfh
0.5 ~ 100A
16
Overload time delay setting
tIgfh
0.1 ~ 99.99S
17
Charging protection
Charging time protection automatically exit
tCD
0.01 ~ 9.99S
18
White cast back control charging protection
Icdnf
19
White charging current value
Icd
0.5 ~ 100A
20
White charging delay setting
tIcd
0.01 ~ 9.99S
Note :. 1 Ifsx values have the following meanings :
0 : Exit 1 to 3 : Inverse - 1: General , 2 : very , 3: Extreme
. 2 Igfhnf values have the following meanings :
0 : Exit 1 to 2: inputs - 1: Alarm 2 : Trip
3.3 device parameter tuning
No.
Name
Symbol
Range
1
Device -level management
The mailing address of the device
ADDR
1 ~ 110
2
Operation of the device password
PASSWORD
0 to 99
3
Baud Rate
Baud Rate Setting
BTL
0 to 9
4
Exchange amount ratings
CT primary current rating
Sec.IN
0 ~ 65535A
5
PT primary current rating
Sec.UN
0 ~ 999.9KV
4 . Protection Principle wiring diagram
