Black Box IC109A-R2 Manuel d'installation Page 136
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Commissioning
Checking Residual Voltage
Input Connections
With Voltage Delivered by 3 VT in
Broken Delta Arrangement
Description
Perform this check when:
b residual voltage is delivered by three VTs on the
secondary circuits connected in a broken delta
arrangement
b the residual current is either calculated in
Sepam™, or it cannot be calculated (for
example,: assembly with two CTs) and is
therefore not available for the protection function.
Block Diagram
Procedure
Use the diagram below to perform the following steps
1 Connect generator voltage terminals to the voltage test terminal box. This will
supply residual voltage input to Sepam™
2 When applicable, connect the generator current terminals to the current test
terminal box, to supply Sepam’s phase 1 current input. This provides a residual
current IrΣ = Ia.
3 Turn the generator on.
4 Apply a V
Ln
voltage set to the rated secondary voltage of the VTs installed in a
broken delta arrangement (depending on the case, V
LL
s / 3 or Uns/3).
DE50712
Note: The number of VTs connected to the Sepam™ voltage connector phase inputs is given as an example and is not used for the test.
* Detection of Plugged Connector (required for proper operation. Installed manually)
5 When applicable, inject an Ia current set to the rated secondary current of the
CTs (1 A or 5 A) and in phase with the voltage applied (specifically, generator
phase displacement α(V
Ln
, I) = 0°).
6 Use the SFT2841 software to check the following:
b the value indicated for measured V0 residual voltage is approximately equal
to the rated primary phase-to-neutral voltage of the VTs (V
Ln
p = V
LLp
/ 3)
b when applicable, the value indicated for the calculated IrΣ residual current is
approximately equal to the rated primary current of the CTs
b when applicable, the value indicated for the phase displacement ϕrΣ (Vr, IrΣ)
between the IrΣ current and Vr voltage is approximately equal to 0°
7 Turn the generator off when the test is completed.
Van
Vbn
Vcn
Vr
Van
Vbn Vcn
Ia = Ir
- Series 80 1
- Protective Relays 1
- Safety Instructions 0 3
- Safety Instructions 8
- Before You Begin 8
- Introduction 10
- Modular Architecture 10
- Selection Table 11
- Technical Characteristics 13
- Environmental Characteristics 14
- Precautions 15
- Equipment Identification 16
- Main Units 18
- Accessories 19
- Replacement Equipment 20
- Base Unit 21
- Dimensions 21
- Mounting 22
- Connection 23
- Installing Terminal Guard 24
- Typical for Series 80 24
- CAUTION DANGER 25
- Installation 26
- Sepam™ B83 Connection Diagram 27
- Sepam™ C86 Connection Diagram 28
- Input for Sepam™ B80 34
- Connected Voltage Inputs 35
- 1A/5A Current Transformers 36
- Test Accessories 40
- CSH120 & CSH200 42
- Zero Sequence CT 42
- CSH30 Interposing Ring CT 44
- ACE990 Zero Sequence 47
- CT Interface 47
- Voltage Transformers 48
- MES120, MES120G, MES120H 50
- 14 Input/6 Output Modules 50
- Remote Modules 53
- MET1482 54
- Temperature Sensor Module 54
- Analog Output Module 56
- Remote Advanced UMI Module 58
- Sync-Check Module 60
- Communication Accessory 64
- Selection Guide 64
- Connection of Communication 65
- ACE937 Fiber Optic Interface 68
- ACE969TP and ACE969FO 69
- Multi-Protocol Interfaces 69
- Description 71
- RS232/RS485 Converter 74
- ACE919CA and ACE919CC 76
- RS485/RS485 Converters 76
- Communications Wiring 78
- Cable Pinouts 81
- Network Limits 82
- User-Machine Interfaces (UMI) 84
- User-Machine Interfaces 85
- DAMAGE TO CARTRIDGE 86
- CAUTION 87
- Local Operation on the UMI 88
- Password 91
- Settings 93
- SFT2841 Setup and Operating 96
- Welcome Window 96
- Connection Window 97
- SFT2841 Set Up and Operating 100
- Software 100
- General Screen Organization 100
- Using the Software 101
- Creating User Messages 102
- Disturbance Recording 103
- Logic-Equation Editing 104
- Program 105
- Default Settings 107
- Configuring Sepam™ 109
- SFT2841 Software 113
- Mimic-Diagram Editor 113
- Presentation 113
- Contents 123
- Principles 124
- Commissioning 125
- Equipment 126
- General Examination and 127
- Preliminary Actions 127
- Checking Input Connections 129
- 3-Phase Generator 129
- Single-Phase Generator & 130
- Voltages Delivered by 3 VT 130
- Checking Phase Current 132
- Input Connections 132
- For Differential Applications 132
- LPCT Type Current Sensors 133
- Checking Residual Current/ 134
- Voltage Input Connections 134
- Checking Residual Current 135
- Van = Vr 135
- Checking Residual Voltage 136
- Broken Delta Arrangement 136
- With Voltage Delivered by 137
- 1 Neutral Point VT 137
- Checking Sepam™ B80 138
- Additional Voltage 138
- Additional Voltage 139
- Checking Sepam™ B83 140
- Additional Phase Voltage 140
- Additional Residual Voltage 142
- Checking Sepam™ C86 143
- Unbalance Current 143
- Checking Logic Input & 144
- Output Connections 144
- Checking Optional 145
- Module Connections 145
- Validating the Complete 146
- Protection Chain 146
- Test Sheet 147
- Sepam™ Series 80 147
- Troubleshooting Assistance 152
- 152
- Replacing the Base Unit 156
- Replacing the Battery 156
- 3-Wire Power System 158
- 4-Wire Power System 159
- 63230-216-229-B1 161
- Schneider Electric USA 164
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