Kyongbo Electronics GDR-D01 User manual

Digital UnderVoltage Relay (GDR-D01) User's Manual V1.10
Digital UnderVoltage Relay Manual
TYPE : GDR-D01
2010. 2. 4
Version 1.10
Kyongbo Electronics Co., Ltd.

Digital UnderVoltage Relay (GDR-D01) User's Manual V1.10
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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.

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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.

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• 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

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Table of Contents
Order of Titles
1. General Features ···································································································································· 9
2. Technical Data ····································································································································· 10
2.1 Voltage Input ······························································································································· 10
2.2 Rated Control Source Voltage ··································································································· 10
2.3 Rated Frequency ·························································································································· 10
2.4 Case ··············································································································································· 10
2.5 UnderVoltage ································································································································ 11
2.6 Output Contacts / Capacity ········································································································ 12
2.7 Insulation Test ······························································································································ 13
2.8 Mechanical Test ··························································································································· 14
2.9 Noise Test ···································································································································· 14
2.10 Temperature, Humidity Test ······································································································· 15
2.11 Other Operating Condition ·········································································································· 15
3. Protection Characteristics ···················································································································· 16
3.1 UnderVoltage Function ·················································································································· 16
4. Subsidiary Function ····························································································································· 17
4.1 Metering ·········································································································································· 17
4.2 Communication ······························································································································· 17
4.2.1 RS-232C Communication ······································································································· 18
4.2.2 RS-485C Communication ······································································································· 18
4.3 Self Diagnosis Function ················································································································ 19
4.4 Fault Recording Function ·············································································································· 19
5. Display Panel Construction ················································································································· 20
5.1 Front-side Display Panel Structure ······························································································ 20
5.2 Key Pad & Communication Connector ······················································································ 21
5.3 LED ( Operating Indicators ) ······································································································ 21
6. Display & Setting Modes ··················································································································· 22
6.1 Key Operations and LCD Construction ······················································································ 22
6.1.1 LCD Default Display Condition, Backlight On/Off ··························································· 22
6.1.2 LCD Screen Display and Principles of Key Operation ····················································· 22

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6.1.3 One-button Display ················································································································· 22
6.1.4 Menu-Tree ································································································································ 22
6.2 Setting Modes ································································································································ 23
6.2.1 Measurement Screen ··············································································································· 25
6.2.2 Protection Setting ···················································································································· 25
6.2.2.1 Protection ▶ UVR Setting ···························································································· 25
6.2.3 Self-Diagnosis Screen ············································································································· 26
6.2.4 RS-485 Comm. Setting ·········································································································· 27
6.2.5 System Config. Setting ·········································································································· 27
6.2.5.1 System Config. ▶ Power system Setting ···································································· 28
6.2.5.2 System Config. ▶ T/S Output Setting ········································································ 28
6.2.5.3 System Config. ▶ Password Setting ············································································ 30
6.2.6 Recorder ··································································································································· 31
6.2.6.1 Recorder ▶ 1.Display Fault Screen ············································································· 31
6.2.6.2 Recorder ▶ 2.Clear Fault Category ············································································· 31
6.2.7 Test ··········································································································································· 32
6.2.7.1 Test ▶ Display Test ······································································································ 32
6.2.7.2 Test ▶ Contact Test ······································································································ 33
7. PC Software ( SetGDRSeries ) ······································································································· 35
7.1 Program Menu ······························································································································· 36
7.2 Device Selecting ···························································································································· 37
7.3 Communication Port Configuration ······························································································ 37
7.4 Setting Value Change Screen ······································································································· 38
7.4.1 Setting ······································································································································ 38
7.4.2 Status ········································································································································ 40
7.4.3 Report ······································································································································· 41
7.5 Help ················································································································································· 42

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Order of Table
【Table 2.1】 Input Voltage ·················································································································· 10
【Table 2.2】 Rated Control Power ······································································································ 10
【Table 2.3】 Case ·································································································································· 10
【Table 2.4】 OverVoltage Element ······································································································ 11
【Table 2.5】 Output Contacts / Capacity ··························································································· 12
【Table 2.6】 Insulation ·························································································································· 13
【Table 2.7】 Vibration, Shock, Earthquake ························································································ 14
【Table 2.8】 Noise Endurance ············································································································· 14
【Table 2.9】 Temperature, Humidity ··································································································· 15
【Table 2.10】 Other Usage Conditions ······························································································· 15
【Table 4.1】 Metering ··························································································································· 17
【Table 4.2】 Communication Method ································································································· 17
【Table 5.1】 Key Pad & Communication Connector ······································································· 21
【Table 5.2】 LED ( Operating Indicators ) ······················································································· 21
【Table 6.1】 UVR Menu ······················································································································ 26
【Table 6.2】 RS-485 Comm. Setting ·································································································· 27
【Table 6.3】 T/S Connection Menus ·································································································· 29
【Table 6.4】 Setting Menus ················································································································· 34
【Table 7.1】 SetGDRSeries Program Menus ······················································································ 36
【Table 7.2】 Communication Port Configuration ··············································································· 38
Appendix 1. Product Factory Default Setting Values ········································································ 43

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Order of Figures and Diagrams
【Figure 3.1】 UVR Logic Diagram ···································································································· 16
【Figure 4.1】 RS-232C Circuit Diagram ···························································································· 18
【Figure 4.2】 RS-232C Connection ····································································································· 18
【Figure 4.3】 RS-485C Connection Diagram ····················································································· 18
【Figure 5.1】 Front Panel Display ······································································································ 20
【Figure 6.1】 Menu Tree ····················································································································· 23
【Figure 7.1】 SetGDRSeries Default Screen ······················································································ 35
【Figure 7.2】 Relay Selecting ·············································································································· 37
【Figure 7.3】 Communication Port Setting ························································································ 37
【Figure 7.4】 GDR-D01 Setting ·········································································································· 39
【Figure 7.5】 GDR-D01 Status ············································································································ 40
【Figure 7.6】 GDR-D01 Report ··········································································································· 41
【Figure 7.7】 Help ································································································································ 42
Appended 1. Dimensioned Drawings Unit : mm ··············································································· 44
Appended 2. Internal Block Diagram ·································································································· 45
Appended 3. External Connection Diagram ························································································ 45
Appended 4. UnderVoltage Element Inverse Time Characteristic Curve ········································ 46
Appended 5. UnderVoltage Element Definite Time Characteristic Curve ······································· 47

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1. General Features
This Relay contains Relay elements of UVR × 1, and is a Digital arithmetic relay
designed and manufactured properly for the protection against UnderVoltage so it is not
just easy to change the operation time and operation voltage, 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 UnderVoltage Relay
▣ Variety of timing characteristics : Inverse Time, Definite Time
▣ 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 5 Relay contact output (T/S Output) to 2 modes, and all
of these can be used for Alarms
- contact for Trip(1a), contact for Signal(4a)
▣ Reliability is increased by the operation through output contacts when the Relay is
in abnormal state
▣ Convenient PC Application
- 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)
- Supported Protocol : MODBUS
▣ Increased EMC / EMI performance
▣ Applied Standard : Korea Electrical Manufacturers' Cooperative Standard
(KEMC1120)

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2. Technical Data
2.1 Voltage Input
Rated Voltage (VN)
AC 63.5 ~ 110V
Overload Endurance
1.15 times rated voltage / 3 hours
Burden
0.5VA or less
【Table 2.1】 Input Voltage
2.2 Rated Control Source Voltage
Rated Control Source
Voltage
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 Source Voltage
2.3 Rated Frequency
50Hz or 60Hz (Sine Waveform)
2.4 Case
Case Structure
Flushed Drawer Type
Case Color
Munsell No. N1.5 (Black)
Case Material
Fe (Steel)
【Table 2.3】 Case

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2.5 UnderVoltage
Operation Value
30 ~ 105V (1V Step)
Operation Time
characteristic
Inverse Time, Definite Time
Operation Time Ratio
0.1 ~ 10.0 (0.1 Step)
Definite Time
Operation Time
0.04 ~ 60.00Sec (0.01Sec Step)
Release Delay Time
0.00 ~ 60.00Sec (0.01Sec Step)
OP MODE
DIGITAL, INDUCTION
Operation Recovery
MODE
ON, OFF
Operation Recovery
Time
0.1 ~ 180.0Sec (0.1Sec Step)
Release Value
At least 95% of the Setting Value
Operation Value
Precision Ratio
Within ±5% of the Setting Value
【Table 2.4】 UnderVoltage Element

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T / S1 contacts (Trip contacts) - 1a Contacts
Rated Power
AC 250V, DC 125V
Continuous Flow
Electricity Capacity
20A (AC 250V)
0.5 sec. Close
Circuit Capacity
30A (DC 125V)
Closing Capacity
6250VA
Material
Silver alloy
T / S2 ~ T / S5 Contacts (Signal contacts) - 4a Contacts
Rated Power
AC 250V, DC 125V
Continuous Flow
Electricity Capacity
5A (AC 250V)
0 . 5 s e c . C l o s e
Ci rc ui t Capac i ty
5A (DC 125V)
Closing Capacity
1250VA / 150W
Material
Gold-plate silver alloy
Healthy Alarm - 1b Contact
Rated Power
AC 250V, DC 125V
Continuous Flow
Electricity Capacity
10A (AC 250V)
Open Circuit
Capacity
DC 125V, 30W, Time constant(25ms), 1A
Closing Capacity
2500VA / 300W
Material
Silver alloy
【Table 2.5】 Output Contacts / Capacity
2.6 Output Contacts / Capacity

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2.7 Insulation Test
Insulation
Resistance
DC 500V
Electric Circuit to
Ground
10MΩ
IEC60255-5
Between Electric
Circuits
5MΩ
Between Electric
Circuit Connections
Commercial
Frequency
Withstand
Voltage
50/60Hz,
1min
Electric Circuit
Bundle to Ground
2kV
IEC60255-5
Between Electric
Circuits
Between Connection
Circuit Contacts
1kV
Impulse
Withstand
Voltage
1.2/50μs,
3 times each
for
positive/negative
polarity
Electric Circuit
Bundle to Ground
5kV
IEC60255-5
Between
Transformer Circuits
Between Transformer
Control Circuits
Between Control
Circuits
3kV
Between Tranformer
Circuit Contacts
Between Control
Power Circuit
Contacts
【Table 2.6】 Insulation
Caution) AUX POWER and 485 Communication Circuits enclose surge protection
circuit inside the relay, so do not test insulation resistance test and withstand
voltage test.

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2.8 Mechanical Test
Vibratio
n
Vibration
Response Test
10 ~ 150Hz, 0.5G, Front/Back, Left/Right, Up/Down
1 time
Vibration
Endurance Test
10 ~ 150Hz, 1G, Front/Back, Left/Right, Up/Down
20 times
Shock
Shock Response
Test
5G, Front/Back, Left/Right, Up/Down
3 times
Shock Withstand
Test
15G, Front/Back, Left/Right, Up/Down
3 times
Bump Test
10G, Front/Back, Left/Right, Up/Down
100 times
Earthqu
ake
1 ~ 8㎐
x : 3.5mm, y : 1.5mm, Sweep : 1 time
8 ~ 35㎐
x : 1g, y : 0.5g, Sweep : 1 time
【Table 2.7】 Vibration, Shock, Earthquake
2.9 Noise Test
1MHz burst disturbance
1MHz, 75ns,
400Hz, 2Sec
Common
mode
2.5kV
IEC60255-22-1
Differential
mode
1.0kV
EFT Burst
Applied Voltage
4kV
IEC60255-22-4
Repeated
Frequency
2.5kHz
Electrostatic Discharge
Air discharge
8kV
IEC60255-22-2
Contact discharge
6kV
Surge Electrical
Disturbance
1.2/50μs, 8/20μs,
30sec, 3 times
Common
mode
2.0kV
IEC60255-22-5
Differential
mode
1.0kV
Radio Frequency
Radiation Endurance
80MHz ~ 1GHz, 10V/m, 1sec
IEC60255-22-3
Radio Frequency
Conduction Endurance
150kHz ~ 80MHz, 10V/m, 1sec
IEC60255-22-6
【Table 2.8】 Noise Endurance

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2.10 Temperature, Humidity Test
Temperature Range
Operation Assurance
-10℃ ~ +55℃
Recovery Assurance
-20℃ ~ +60℃
Relative Humidity
Daily Average 30% ~ 90%
【Table 2.9】 Temperature, Humidity
2.11 Other Operating Condition
Surface Height
1000m or less
Condition where there is no abnormal vibration, shock, slope or influence
of the magnetic field
Place where there is no explosive dust, flammable dust, or flammable
/ rusty gas, or salt
【Table 2.10】 Other Operating Conditions

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3. Protection Characteristics
3.1 UnderVoltage Function
This relay contains the Inverse Time characteristic and Definite Time characteristic
to be used for UnderVoltage protection. OP MODE can be set to DIGITAL and
INDUCTION mode. When it is set to DIGITAL, the Undervoltage element does
not operate when the initial power is supplied to the relay or after Reset recovery,
and it only operates when the voltage goes above the setting value and drops under
the setting value. When it is set to INDUCTION, it maintains the induction type
relay operation characteristic, so the existing induction type relays are generally
acceptable. Several recovery functions are included in the state operated by
UnderVoltage element, the recovery function for the voltage going above the setting
value, the recovery function when Reset Key is pressed when the operation mode is
set to Digital, and the recovery function after the recovery time(RST-Time) when
recovery function(RST-Mode) is ON.
NI characteristic is function of time therefore operating time is short as large voltage.




 



×



sec
T = Operation Time
V = Relay input voltage / Relay operation setting value
M = Operation time ratio
The time and voltage relationship function is as follows.
【Figure 3.1】UVR Logic Diagram

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4. Subsidiary Function
4.1 Metering
This relay has the metering function of the voltage.
Category
Characteristic
Va Phase Voltage
● Measure the effective value of the voltage
● 1st voltage of the relay input voltage converted by CT ratio
● Metering Range : 0 ~ 250V (When PT Ratio is 1:1)
【Table 4.1】 Metering Display
Except, the voltage over the metering range is displayed as FULL.
4.2 Communication
This relay offers the general purpose RS-232C / RS-485C communication method,
and the maximum speed of 19200 bps data transmission is possible. There are 1
RS-232C port in the front and 1 RS-485C port in the back of the relay. The
RS-232C communication port in the front of the relay is connected to PC and used
for changing the setting values, viewing the measurement, verifying Fault information,
display the status, and Remote Reset, and the RS-485C communication port in the
back is used for remote SCADA communication.
Protocol
Communication Method
● RS-232/485
Supported Protocol
● MODBUS
Communication
Protocol
(RS-485C)
Communication Distance
● 1.2km
Communication Cable
● General RS-485C Two-Pair cable
Communication Speed
● 300 ~19200 bps
Communication Method
● Half-Duplex
Maximum In/Out Voltage
● -7V ~ +12V
Communication
Port
Front Display Panel
● RS232 Port 1
● 19200 BPS,
MODBUS Protocol
Back
● RS485 Port 1
● 300 ~ 19200 BPS,
MODBUS Protocol
● SCADA Communication
● Contact No. : 13(+), 15(-)
【Table 4.2】 Communication Method

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4.2.1 RS-232C Communication
【Figure 4.1】 RS-232C Circuit Diagram
【Figure 4.2】 RS-232C Connection
ŸThe RS-232C communication cable supplied with this product uses a cross
cable which has No. 2 and No. 3 pins crossed ash shown in 【Figure 4.1】,
so using ordinary direct cable will not enable the communication.
ŸIf there is no RS-232C port in the PC, and uses USB port, only with
USB to 232 cable cannot make connection, so plesae use USB to 232
cable with the cross cable supplied with this product together.
4.2.2 RS-485C Communication
To connect to higher level monitoring control system, insulated RS-485 Half Duplex
communication method is provided. This communication method can connect with
multi-drop, and the maximum communication distance is 1.2km. The end part of
RS-485C cable should be connected with 120Ω resistor parallel as shown in the
following figure.
【Figure 4.3】 RS-485C Connection Diagram

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4.3 Self Diagnosis Function
Self Diagnosis function monitors the operation status of the relay at all times to prevent
abnormal/failure operation of the equipment. If an abnormality is detected, red Error LED
is lighted, and the Self Diagnosis result category in the Self-Diagnosis menu is displayed as
FAIL. Also, when a fault occurs, the operation output of the relay element is blocked
immediately, and it is displayed on LCD and LED until the fault is cleared.
Main diagnosis categories are as follows.
▣ Power Fail
▣ CPU Watchdog Fail
▣ Memory Fail
▣ Value outside Setting
4.4 Fault Recording Function
This function displays the accumulated count of operation, voltage, operation
element, and relay operation time.
It can be viewed using PC Tool(SetGDRSeries) through RS-232C communication.

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【Figure 5.1】 Front-side Display
5. Display Panel Construction
5.1 Front-side Display Panel Structure
The front-side display panel has 20 x 4 LCD, 4 LEDs, 7 KeyPad, and RS-232C
Communication Connector as follows. There is a transparent cover on the front-side
to prevent dust or foreign substance from entering and to stop unnecessary key
operations. When changing the setting value, it is required to input password to
prevent unauthorized user other than designated person to change the setting, and the
protection function is still operational during the inquiry through LCD.