Kyongbo Electronics GDR-AEF01 User manual

Digital Overcurrent & Ground Overvoltage &
Selective Ground Relay Manual
TYPE : GDR-AEF01
2006. 7. 18
Version 1.00
Kyongbo Electronics Co., Ltd.

Digital Overcurrent & Ground Overvoltage & Selective Ground Relay (GDR-AEF01) User's Manual
2 / 67
Kyongbo Electronics Co., Ltd.
Safety Precautions
This document is for the safety of the user, and to prevent property damage.
Be sure to read the user manual carefully, and use the product accordingly.
The user manual must be kept in a place where it can be easily seen by the product
user.
WARNING
CAUTION
This symbol indicates the
possibility of death or serious
injury.
This symbol indicates the
possibility of injury or damage to
properties only.
SYMBOLS
Be sure not to do.
Be sure to follow the instruction.

Digital Overcurrent & Ground Overvoltage & Selective Ground Relay (GDR-AEF01) User's Manual
3 / 67
Kyongbo Electronics Co., Ltd.
WARNING
• Do not perform any wiring work while the power is on or
the product is in operation.
It may cause an electric shock.
• Must verify the status of the grounding connection before
starting the operation.
Otherwise, it may cause an electric shock, damage, or a fire.
• Do not operate the product with wet hands.
It may cause an electric shock.
• Do not use if the clothing of the cable is damaged.
It may cause an electric shock.
• Do not perform any wiring work when the main cable is
live.
It may cause an electric shock, and a damage or a fire by the
charged voltage of the converter.
• Do not disassemble the product even if the power is not
on, except for wiring or maintenance.
It may cause an electric shock by the charged current in
the product.
• Let the electrical technician to perform wiring, test run,
and maintenance.
Otherwise, it may cause an electric shock or a fire by a wrongful
operation.
• Perform terminal work when cutting a cable.
Otherwise, it may cause an electric shock from the naked part of the
cable.
• Place the terminal cover on the terminal in the back after
the wiring work.
Otherwise, it may cause an electric shock.

Digital Overcurrent & Ground Overvoltage & Selective Ground Relay (GDR-AEF01) User's Manual
4 / 67
Kyongbo Electronics Co., Ltd.
• Apply the rated power to the power source terminal.
Otherwise, it may cause a damage to the product or a fire.
• Follow the rated load on the input and output
connections.
Otherwise, it may cause a damage to the product or a fire.
• Prevent screws, metal parts, water, or oil from entering
the product.
It may cause a damage to the product or a fire.
• Do not let the product be exposed to a direct sunlight.
It may cause a damage to the product.
• Extract and insert Case on a leveled surface.
Otherwise, it may cause a damage to the product.
• Do not store the product in a humid or a dusty area.
It may cause a damage to the product.
CAUTION

Digital Overcurrent & Ground Overvoltage & Selective Ground Relay (GDR-AEF01) User's Manual
5 / 67
Kyongbo Electronics Co., Ltd.
Table of Contents
Order of Titles
1. General Features ···································································································································· 9
2. Technical Data ····································································································································· 10
2.1 Voltage, Current Input ·················································································································· 10
2.2 Rated Control Source Voltage ····································································································· 10
2.3 Rated Frequency ···························································································································· 10
2.4 Case ················································································································································· 11
2.5 Time Overcurrent ··························································································································· 11
2.6 Instantaneous Overcurrent ············································································································· 12
2.7 Time Ground OverVoltage ··········································································································· 12
2.8 Instantaneous Ground OverVoltage ······························································································ 13
2.9 Selective Ground Element ············································································································ 13
2.10 Output Contacts ··························································································································· 14
2.11 Insulation Test ······························································································································ 15
2.12 Mechanical Test ··························································································································· 15
2.13 Noise Test ···································································································································· 16
2.14 Temperature, Humidity Test ······································································································· 17
2.15 Other Operating Condition ·········································································································· 17
3. Protection Characteristics ···················································································································· 18
3.1 Overcurrent Function ····················································································································· 18
3.2 Ground OverVoltage Function ····································································································· 21
3.3 Selective Ground Function ············································································································ 22
4. Subsidiary Function ····························································································································· 23
4.1 Metering ·········································································································································· 23
4.2 Communication ······························································································································· 23
4.2.1 RS-232C Communication ······································································································· 24
4.2.2 RS-485C Communication ······································································································· 25
4.3 Self Diagnosis Function ················································································································ 25
4.4 Fault Recording Function ·············································································································· 26
5. Display Panel Construction ················································································································· 27
5.1 Front-side Display Panel Structure ······························································································ 27
5.2 Key Pad & Communication Connector ······················································································ 28

Digital Overcurrent & Ground Overvoltage & Selective Ground Relay (GDR-AEF01) User's Manual
6 / 67
Kyongbo Electronics Co., Ltd.
5.3 LED ( Operating Indicators ) ······································································································ 28
6. Display & Setting Modes ··················································································································· 29
6.1 Key Operations and LCD Construction ······················································································ 29
6.1.1 LCD Default Display Condition, Backlight On/Off ··························································· 29
6.1.2 LCD Screen Display and Principles of Key Operation ····················································· 29
6.1.3 One-button Display ················································································································· 29
6.1.4 Menu-Tree ································································································································ 29
6.2 Setting Modes ································································································································ 30
6.2.1 Measurement Screen ··············································································································· 32
6.2.2 Protection Setting ···················································································································· 32
6.2.2.1 Protection ▶ Time OCR Setting ·················································································· 32
6.2.2.2 Protection ▶ INST. OCR Setting ················································································· 33
6.2.2.3 Protection ▶ Time OVGR Setting ··············································································· 34
6.2.2.4 Protection ▶ INST. OVGR Setting ·············································································· 34
6.2.2.5 Protection ▶ SGR Set Setting ······················································································ 35
6.2.3 Self-Diagnosis Screen ············································································································· 36
6.2.4 RS-485 Comm. Setting ·········································································································· 36
6.2.5 System Config. Setting ·········································································································· 37
6.2.5.1 System Config. ▶ Power system Setting ···································································· 37
6.2.5.2 System Config. ▶ T/S Output Setting ········································································ 38
6.2.5.3 System Config. ▶ Password Setting ············································································ 40
6.2.6 Recorder ··································································································································· 41
6.2.6.1 Recorder ▶ 1.Display Fault Screen ············································································· 41
6.2.6.2 Recorder ▶ 2.Clear Fault Category ············································································· 42
6.2.7 Test ··········································································································································· 42
6.2.7.1 Test ▶ Display Test ······································································································ 42
6.2.7.2 Test ▶ Contact Test ······································································································ 43
7. PC Software ( SetGDRSeries ) ········································································································· 45
7.1 Program Menu ······························································································································· 46
7.2 Device Selecting ···························································································································· 47
7.3 Communication Port Configuration ······························································································ 47
7.4 Setting Value Change Screen ······································································································· 48
7.4.1 Setting ······································································································································ 48
7.4.2 Status ······································································································································ 49
7.4.3 Report ······································································································································· 51
7.5 Help ················································································································································· 52

Digital Overcurrent & Ground Overvoltage & Selective Ground Relay (GDR-AEF01) User's Manual
7 / 67
Kyongbo Electronics Co., Ltd.
Order of Table
【Table 2.1】 Input Current ··················································································································· 10
【Table 2.2】 Rated Control Source Voltage ······················································································ 10
【Table 2.3】 Case ·································································································································· 11
【Table 2.4】 Time Overcurrent Element ···························································································· 11
【Table 2.5】 Instantaneous Overcurrent Element ··············································································· 12
【Table 2.6】 Time Ground OverVoltage Element ············································································· 12
【Table 2.7】 Instantaneous Ground OverVoltage Element ······························································· 13
【Table 2.8】 Selective Ground Element ····························································································· 13
【Table 2.9】 Output Contacts / Capacity ··························································································· 14
【Table 2.10】 Insulation ························································································································ 15
【Table 2.11】 Vibration, Shock, Earthquake ······················································································ 16
【Table 2.12】 Noise Endurance ··········································································································· 16
【Table 2.13】 Temperature, Humidity ································································································· 17
【Table 2.14】 Other Usage Conditions ······························································································· 17
【Table 3.1】 Relay Time Characteristics and Characteristic Values for Curve Selection ············ 19
【Table 4.1】 Metering ··························································································································· 23
【Table 4.2】 Communication Method ································································································· 24
【Table 5.1】 Key Pad & Communication Connector ······································································· 28
【Table 5.2】 LED ( Operating Indicators ) ······················································································· 28
【Table 6.1】 Time OCR Menu ··········································································································· 33
【Table 6.2】 INST. OCR Menu ·········································································································· 34
【Table 6.3】 Time OVGR Menu ········································································································ 34
【Table 6.4】 INST. OVGR Menu ······································································································· 35
【Table 6.5】 SGR Menu ······················································································································ 36
【Table 6.6】 RS-485 Comm. Setting ·································································································· 37
【Table 6.7】 T/S Connection Menus ·································································································· 39
【Table 6.8】 Setting Menus ················································································································· 44
【Table 7.1】 SetGDRSeries Program Menus ······················································································ 46
【Table 7.2】 Communication Port Configuration ··············································································· 48
Appendix 1. Product Factory Default Setting Values ········································································ 53

Digital Overcurrent & Ground Overvoltage & Selective Ground Relay (GDR-AEF01) User's Manual
8 / 67
Kyongbo Electronics Co., Ltd.
Order of Figures and Diagrams
【Figure 3.1】 INST. OCR(IOCR) Logic Diagram ············································································ 19
【Figure 3.2】 Time OCR(TOCR) Logic Diagram ············································································· 20
【Figure 3.3】 INST. OVGR(IOVGR) Logic Diagram ······································································ 21
【Figure 3.4】 TIME OVGR(TOVGR) Logic Diagram ····································································· 21
【Figure 3.5】 SGR Logic Diagram ····································································································· 22
【Figure 4.1】 RS-232C Circuit Diagram ···························································································· 24
【Figure 4.2】 RS-232C Connection ····································································································· 24
【Figure 4.3】 RS-485C Line Connection Diagram ············································································ 25
【Figure 5.1】 Front Panel Display ······································································································ 27
【Figure 6.1】 Menu Tree ····················································································································· 30
【Figure 7.1】 SetGDRSeries Default Screen ······················································································ 45
【Figure 7.2】 Relay Selecting ·············································································································· 47
【Figure 7.3】 Communication Port Setting ························································································ 47
【Figure 7.4】 GDR-AEF01 Setting ····································································································· 49
【Figure 7.5】 GDR-AEF01 Status ······································································································· 50
【Figure 7.6】 GDR-AEF01 Report ···································································································· 51
【Figure 7.7】 Help ································································································································ 52
Appended 1. Dimensioned Drawings Unit : mm ············································································· 54
Appended 2. Internal Block Diagram ·································································································· 55
Appended 3. External Connection Diagram ························································································ 55
Appended 4. Inverse Time Characteristic Curve ················································································ 56
Appended 5. Very Inverse Time Characteristic Curve ······································································ 57
Appended 6. Extremely Inverse Time Characteristic Curve ····························································· 58
Appended 7. Long Inverse Time Characteristic Curve ······································································ 59
Appended 8. Kyongbo Induction Type Inverse Time(KEPCO Type) Characteristic Curve ·········· 60
Appended 9. Kyongbo Induction Type Very Inverse Time(KEPCO Type) Characteristic Curve ······ 61
Appended 10. Overcurrent Definite Time Characteristic Curve ······················································· 62
Appended 11. Ground Overcurrent Element Inverse Time Characteristic Curve ··························· 63
Appended 12. Ground Overvoltage Element Definite Time Characteristic Curve ························· 64
Appended 13. Selective Ground Element Inverse Time Characteristic Curve ································ 65
Appended 14. Selective Ground Element Definite Time Characteristic Curve ······························ 66
Appended 15. Selective Ground Element Operation Characteristic Curve ······································ 67

Digital Overcurrent & Ground Overvoltage & Selective Ground Relay (GDR-AEF01) User's Manual
9 / 67
Kyongbo Electronics Co., Ltd.
1. General Features
This Relay contains Relay elements of OCRx2, OVGRx1, and SGRx1 at the same
time, and is a Digital arithmetic relay designed and manufactured appropriately
applicable to protect the equipment and electrical lines by detecting and blocking the
circuit or alarming when an accident caused by non-ground system or short circuit in
resistance ground system or overcurrent by overload or grounding accident between
electrical cable and the grounding accident caused by insulation heating of electrical
equipment or destruction, so it is not just easy to change the operation time and
operation current, but it can also record and store fault information thereby greatly
enhancing the reliability of the cable line, and the main characteristics are as follows.
Features
▣ Total arithmetic type over-current, ground overvoltage, and selective ground Relay.
▣ Variety of timing characteristics
- OCR : 7 time characteristics included
- OVGR : instantaneous, inverse, definite time characteristics included
- SGR : inverse and definite time characteristics included
▣ Duration of maintaining output contact is 0.00 ~ 60.00Sec (0.01Sec Step), and
variable setting is possible.
▣ Set value and measured values are Displayed digitally through LCD Screen. (4 x
20 LCD Screen)
▣ Enhance reliability with surveillance function at all times.
▣ Free selection of frequency Settings according to the rated frequency of the line.
(50 / 60Hz)
▣ Possible to set each of 7 Relay contact output (T/S Output) to 12 modes, and all
of these can be used for Alarms.
- contact for Trip(1a), contact for Signal(6a)
▣ Reliability is increased by the operation through output contacts when the Relay is
in abnormal state.
▣ Convenient PC Applications
- SetGDRSeries : change setting values, verify the measurements, verify Fault
information, display status, Remote Reset.
▣ Possible to self-test through manual Trip command(Contact Test)
▣ Maintains thorough security using password input when changing setting values
▣ Various communications supported
- Communication Methods : RS-232C, RS-485C (SCADA communications)

Digital Overcurrent & Ground Overvoltage & Selective Ground Relay (GDR-AEF01) User's Manual
10 / 67
Kyongbo Electronics Co., Ltd.
- Supported Protocol : MODBUS
▣ Increased EMC / EMI performance
▣ Applied Standard : Korea Electrical Manufacturers' Cooperative Standard
(KEMC1120)
2. Technical Data
2.1 Voltage, Current Input
Rated Zero
Sequence
Voltage
VO
AC 190V
Rated Current
(IN)
IN
AC 5A
IO
AC 1.5mA
Overload
Endurance
VO
1.15 time the rated voltage / 3 hours
IN
2 time the rated current / 3 hours
20 times the rated current / 2 seconds
IO
100 times the rated current / continuously
Burden
0.5VA or less / Phase
【Table 2.1】 Input Current
2.2 Rated Control Source Voltage
Rated Current (IN)
AC/DC 110 ~ 220V (free voltage)
Overload Endurance
1.3 times rated voltage / 3 hours
Burden
Always
30W or less
Operation
70W or less
【Table 2.2】 Rated Control Power
2.3 Rated Frequency
50Hz or 60Hz (Sine Waveform)