Black Box IC109A-R2 Instrukcja Instalacji Strona 47
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© 2007 Schneider Electric. All Rights Reserved.
63230-216-229-B1
Installation
ACE990 Zero Sequence
CT Interface
Connection
DE51682
Connecting a Zero Sequence CT
Connect only one zero sequence CT to the ACE990 interface.
The secondary circuit of the MV zero sequence CT connects to two of the five
ACE990 interface input terminals. To define the two input terminals, you must know:
b Zero sequence CT ratio (1/n)
b Zero sequence CT power
b Close approximation of rated current INr
(INr is a general setting in Sepam™ and defines the ground fault protection
setting
range between 0.1 and 15 INr)
The table below is used to determine:
b the two ACE990 input terminals to connect to the MV zero sequence CT
secondary
b the type of residual current sensor to set
b the exact value of the rated residual current INr setting, given by the following
formula: INr = k x number of zero sequence CT turns
with k the factor defined in the table below
The zero sequence CT must connect to the interface in the right direction for correct
operation. The MV zero sequence CT secondary output terminal S1 must connect
to the terminal with the lowest index (Ex).
K Value ACE990 Input
Terminals to be
Connected
Residual Current
Sensor Setting
Min. MV Zero
Sequence CT
Power
Example:
Given a zero sequence CT with a ratio of 1/400 2 VA, used
within a measurement range of 0.5 A to 60 A.
How should it be connected to Sepam™ via the ACE990?
1. Choose a close approximation of the rated current In0,
5 A.
2. Calculate the ratio:
approx. In0/number of turns = 5/400 = 0.0125.
3. Find the closest value of k in the table opposite to
k = 0.01136.
4. Check the mininum power required for the zero sequence
CT:
2 VA zero sequence CT > 0.1 VA V OK.
5. Connect the zero sequence CT secondary to ACE990 input
terminals E2 and E4.
6. Set Sepam™ up with:
I
Nr = 0.0136 x 400 = 4.5 A.
This value of In0 can be used to monitor current between
0.45 A and 67.5 A.
Wiring of MV zero sequence CT secondary circuit:
b MV zero sequence CT S1 output to ACE990 E2 input
terminal
b MV zero sequence CT S2 output to ACE990 E4 input
terminal.
0.00578 E1 - E5 ACE990 - range 1 0.1 VA
0.00676 E2 - E5 ACE990 - range 1 0.1 VA
0.00885 E1 - E4 ACE990 - range 1 0.1 VA
0.00909 E3 - E5 ACE990 - range 1 0.1 VA
0.01136 E2 - E4 ACE990 - range 1 0.1 VA
0.01587 E1 - E3 ACE990 - range 1 0.1 VA
0.01667 E4 - E5 ACE990 - range 1 0.1 VA
0.02000 E3 - E4 ACE990 - range 1 0.1 VA
0.02632 E2 - E3 ACE990 - range 1 0.1 VA
0.04000 E1 - E2 ACE990 - range 1 0.2 VA
0.05780 E1 - E5 ACE990 - range 2 2.5 VA
0.06757 E2 - E5 ACE990 - range 2 2.5 VA
0.08850 E1 - E4 ACE990 - range 2 3.0 VA
0.09091 E3 - E5 ACE990 - range 2 3.0 VA
0.11364 E2 - E4 ACE990 - range 2 3.0 VA
0.15873 E1 - E3 ACE990 - range 2 4.5 VA
0.16667 E4 - E5 ACE990 - range 2 4.5 VA
0.20000 E3 - E4 ACE990 - range 2 5.5 VA
0.26316 E2 - E3 ACE990 - range 2 7.5 VA
Connection to Sepam™ Series 80
b To residual current Ir input, on connector , terminals 14 and 15 (shielding)
b To residual current I'r input, on connector , terminals 17 and 18 (shielding)
Recommended cables
b Cable between zero sequence CT and ACE990: less than 50 m (160 ft) long
b Sheathed cable shielded by tinned copper braid between the ACE990 and
Sepam™: maximum length 2 m (6.6 ft)
b Cable cross-section between 0.93 mm²
(AWG 18) and 2.5 mm² (AWG 12)
b Resistance per unit length: less than 100 mΩ/m (30.5 mΩ/ft)
b Minimum dielectric strength: 100 Vrms.
Follow these steps to connect the cable.
1 Connect the connection cable shielding in the shortest manner possible
(2 cm or 5.08 in maximum) to the shielding terminal on the Sepam™ connector.
2 Flatten the connection cable against the metal frames of the cubicle. The
connection cable shielding is already grounded in Sepam™. Do not ground the
cable by any other means.
c
b
a
E
E
- 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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