PRODUCT SHOW
SAI-378DPT protection and monitoring device
I. Overview
SAI-378D mainly for two PT monitoring, segmented wiring for a single mother, can be increased in parallel with PT function (when ordering). Can be installed in the switch cabinet in place, but also set the screen installed in the control room.
Protection configuration
● two bus PT voltage measurement (including open delta voltage)
● two bus PT zero-sequence voltage measurement
● Overvoltage Alarm
● low pressure alarm
● bus ground alarm
● PT disconnection detection
● two parallel bus PT secondary (including measuring PT) (optional, specify when ordering)
● fault filtering, event SOE, independent of the operating circuit
Control Function Deployment
● 7 road open into the strong electric remote signal acquisition
● device power failure alarm, emergency signal device, the device alarm signal
● analog telemetry: Ua1, Ub1, Uc1, Uab1, Ubc1, Uca1, Ua2, Ub2, Uc2, Uab2, Ubc2, Uca2, F1, F2
● 2-way pulse input
● 1-way GPS time
Second, the principle that the protection of
2.1 Overvoltage
Device taken to UAB, UBC, UCA any line voltage is greater than the set value, the delay to that action.
2.2 Low Voltage
Device taken to UAB, UBC, UCA three line voltage is less than the set value, the delay to that action.
2.3 Zero sequence overvoltage
3U0 mining equipment to the setting value is greater than the delay to that action.
2.4 PT disconnection detection
One of the following three conditions are met, the device reported hair "PT disconnected" message and warning lights lit:
a) Three-phase voltages are less than 8V, sentenced to three-phase pressure loss.
b) three-phase voltage greater than 8V, the minimum line voltage is less than 16V, sentenced to two-phase or single-phase PT disconnected.
c) three-phase voltage greater than 8V, the maximum and minimum line voltage line voltage difference is greater than 16V, sentenced to two-phase or single-phase PT disconnected.
Third, the setting and the pressure plate
3.1, setting the value of a list and description of
No. Name setpoint setting range Unit Remarks
A control word of a 0000 ~ FFFF no see control word description
2 control word 二 0000 ~ FFFF no spare
3 I mother overvoltage value 0.2 ~ 100.0 V line voltage
4 I mother overvoltage time 0.0 ~ 100.00 S
5 I parent low-value 0.2 ~ 100.0 V line voltage
6 I Mother Low Time 0.0 ~ 100.00 S
7 I mother zero-sequence voltage value 0.0 ~ 20.00 V
8 I parent zero-sequence voltage time 0.0 ~ 100.00 S
9 II female overvoltage value 1.0 ~ 120.0 V line voltage
10 II mother overvoltage time 0.0 ~ 100.00 S
11 II female low-value 0.2 ~ 100.0 V line voltage
12 II Female Low Time 0.0 ~ 100.00 S
13 II Female zero-sequence voltage value 0.2 ~ 100.0 V
14 II Female zero-sequence voltage time 0.0 ~ 100.00 S
15 measuring TA ratio (kA / A) 0.01 ~ 10.0 no no practical significance
16 measuring PT ratio (kV / V) 0.01 ~ 10.0 without a voltage / (secondary voltage * 1000)
Control word a definition:
Position 1:00 meanings set of meanings 0:00
15 3U0 protective synthetic dedicated PT 3U0
0-14 spare spare
3.2 List and description of the soft plate
Corresponding function name plate
I Mother Mother overvoltage I cast back overvoltage function
I Mother Mother Low Low I cast back function
I Mother Mother zero zero pressure I cast back pressure function
I Mother Mother PT PT break I break feature cast back
Mother Mother II II overvoltage overvoltage feature cast back
Mother Mother Low Low II II features cast back
II II female parent zero pressure cast back to zero pressure function
Mother Mother II PT II PT disconnection disconnection feature cast back
Spare a spare one feature cast back
Spare 2 Spare 2 features cast back
Function needs to be put into the soft plate, do not use the function of the corresponding soft platen exit.
SAI-378D mainly for two PT monitoring, segmented wiring for a single mother, can be increased in parallel with PT function (when ordering). Can be installed in the switch cabinet in place, but also set the screen installed in the control room.
Protection configuration
● two bus PT voltage measurement (including open delta voltage)
● two bus PT zero-sequence voltage measurement
● Overvoltage Alarm
● low pressure alarm
● bus ground alarm
● PT disconnection detection
● two parallel bus PT secondary (including measuring PT) (optional, specify when ordering)
● fault filtering, event SOE, independent of the operating circuit
Control Function Deployment
● 7 road open into the strong electric remote signal acquisition
● device power failure alarm, emergency signal device, the device alarm signal
● analog telemetry: Ua1, Ub1, Uc1, Uab1, Ubc1, Uca1, Ua2, Ub2, Uc2, Uab2, Ubc2, Uca2, F1, F2
● 2-way pulse input
● 1-way GPS time
Second, the principle that the protection of
2.1 Overvoltage
Device taken to UAB, UBC, UCA any line voltage is greater than the set value, the delay to that action.
2.2 Low Voltage
Device taken to UAB, UBC, UCA three line voltage is less than the set value, the delay to that action.
2.3 Zero sequence overvoltage
3U0 mining equipment to the setting value is greater than the delay to that action.
2.4 PT disconnection detection
One of the following three conditions are met, the device reported hair "PT disconnected" message and warning lights lit:
a) Three-phase voltages are less than 8V, sentenced to three-phase pressure loss.
b) three-phase voltage greater than 8V, the minimum line voltage is less than 16V, sentenced to two-phase or single-phase PT disconnected.
c) three-phase voltage greater than 8V, the maximum and minimum line voltage line voltage difference is greater than 16V, sentenced to two-phase or single-phase PT disconnected.
Third, the setting and the pressure plate
3.1, setting the value of a list and description of
No. Name setpoint setting range Unit Remarks
A control word of a 0000 ~ FFFF no see control word description
2 control word 二 0000 ~ FFFF no spare
3 I mother overvoltage value 0.2 ~ 100.0 V line voltage
4 I mother overvoltage time 0.0 ~ 100.00 S
5 I parent low-value 0.2 ~ 100.0 V line voltage
6 I Mother Low Time 0.0 ~ 100.00 S
7 I mother zero-sequence voltage value 0.0 ~ 20.00 V
8 I parent zero-sequence voltage time 0.0 ~ 100.00 S
9 II female overvoltage value 1.0 ~ 120.0 V line voltage
10 II mother overvoltage time 0.0 ~ 100.00 S
11 II female low-value 0.2 ~ 100.0 V line voltage
12 II Female Low Time 0.0 ~ 100.00 S
13 II Female zero-sequence voltage value 0.2 ~ 100.0 V
14 II Female zero-sequence voltage time 0.0 ~ 100.00 S
15 measuring TA ratio (kA / A) 0.01 ~ 10.0 no no practical significance
16 measuring PT ratio (kV / V) 0.01 ~ 10.0 without a voltage / (secondary voltage * 1000)
Control word a definition:
Position 1:00 meanings set of meanings 0:00
15 3U0 protective synthetic dedicated PT 3U0
0-14 spare spare
3.2 List and description of the soft plate
Corresponding function name plate
I Mother Mother overvoltage I cast back overvoltage function
I Mother Mother Low Low I cast back function
I Mother Mother zero zero pressure I cast back pressure function
I Mother Mother PT PT break I break feature cast back
Mother Mother II II overvoltage overvoltage feature cast back
Mother Mother Low Low II II features cast back
II II female parent zero pressure cast back to zero pressure function
Mother Mother II PT II PT disconnection disconnection feature cast back
Spare a spare one feature cast back
Spare 2 Spare 2 features cast back
Function needs to be put into the soft plate, do not use the function of the corresponding soft platen exit.
