| CHK4 CONTROLS FUNCTIONS AND CHARACTERISTICS |
| 1. | Control panel is operated by manual or PC |
| 2. | Remote control is by through SCADA |
| 3. | Total time maximum opening | 3 cycles/50ms for 60hz |
| 4. | Re-close time and programming step | Programmable |
| 5. | Independent calibration groups, minimum
Automatic Protection Group Selection is used to change the protection, group depending on the direction of power flow. This allows the re-closer to be correctly graded with devices downstream regardless of the power flow direction. | 3/4
each of which can be configured
with completely separate protection characteristics with different inverse time curves and setting currents. The number of protection groups available to the operator can be configured, thereby restricting or enabling access to protection settings as required |
| 6 | Operation with dead line With battery bank if AC power is lost | Back up battery bank power for 48hours without charging 100times operation within 48hoursBattery bank is charged by intelligent charger in controller cabinet from outside PT |
| 7. | It is with Control and microprocessor protection |
| 8. | Selection of number of operations fast | 0-4 from IEC curve |
| 9. | Selection of number of slow operations | 0-4 from IEC curve |
| 10. | Selection of number of lock operations | 1-4 IEC curve |
| 11. | Buttons with indicators (LED's). Applicable control with microprocessor relay |
| 12. | Modification of curves by time (dial) tap in current and adding time-definite | FOR IEC 5 Curve and IEEE 3 curve |
| 13. | Minimum programmable LED's. It applies to control with microprocessor relay. | 4 (u) |
| 14. | Automatic Re-closer locking |
| 15. | Remote operation lock |
| 16. | Levels of access codes to configuration |
| 17. | Fault recorder |
| 18. | FOR PROTECTION CURRENT TRANSFORMERS: |
| 18.1 | Relation For Phases | 1000/600/400/200/100:1/5 |
| 18.1.1 | Precision for protection: | +/- 5% |
| 18.1.2 | Material of the bushings | Polymer |
| 18.2 | Relation for Ground | 200/100/50:1/5(POTION) |
| 18.2.1 | Precision for protection | 5P |
| 18.2.2 | Material of the bushing | Polymer |
| 19. | FEATURES OF THE ELECTRONIC CONTROL |
| 19.1 | Type of installation: | Outdoor for mounting substation or pole |
| 19.2 | Degree of protection: | IP65/IP54 |
| 19.3 | Access | Front |
| 19.4 | Memory type: | Non-volatile |
| 20. | THE CONTROL UNIT SHOULD INCLUDE: |
| 20.1 | Liquid crystal display | LCD(3"x1"/77mmx27mm) |
| 20.2 | Membrane keyboard |
| 20.3 | LED's for indication of the State of the control, Re-closer (open/close) and the shooting conditions |
| 21. | OPERATION BUTTONS TO ENABLE / DISABLE THE FOLLOWING FUNCTIONS: |
| 21.1 | Ground-fault trip |
| 21.2 | Automatic Re-closer |
| 21.3 | Remote control |
| 21.4 | Buttons for closure and manual (local) tripping of the unit |
| 21.5 | Function of hot line tag to configurable buttons for change of setting and activation of control logic or blocking local group. |
| 22 | PROTECTION FUNCTIONS |
| 22.1 | Instantaneous over current for phase, neutral and negative sequence | 50 relays PGQ/50N |
| 22.2 | Timed over current for phase, neutral and negative sequence | 51 relays PGQ/51N |
| 22.3 | Sequence Components
Negative, positive and zero phase sequence currents and voltages can be
monitored and logged.
In addition, the negative phase sequence current protection can be used for
detection of low-level phase-to-phase faults in the presence of high level three phase
loads. Inverse Time, Definite Time and Instantaneous operation is available. | Setting current range: 10 - 1260 A |
| 22.4 | Sequence Coordination | Sequence Coordination allows a recloser to coordinate it's trip sequence with
another recloser downstream |
| 22.5 | Auto-re-closer | Relay 79 (sequence 1,2,3,4) |
Operating Sequence
Reclose times are individually selectable. The operating sequence is defined by:
O - 1st rt - CO - 2nd rt - CO - 3rd rt - CO
where rt = reclose time.
where O = open.
where C = close. | 1st Reclose Time range: 0.2 - 180 sec |
| 2nd Reclose Time range: 2.0 - 180 sec |
| 3rd Reclose Time range: 2.0 - 180 sec |
| Timing resolution: 0.1 sec |
| Recovery/ Reset Time: 0.1 - 180 sec |
| Sequence Reset Timing resolution: 1 sec |
| 22.6 | Trips to Lockout | Overcurrent and fault trips to lockout are selectable between 1 and 4. A separate
setting is available for Sensitive Earth Fault and Negative Phase Sequence. |
| 22.7 | Loss of phase
Loss of phase protection trips the re-closer if phase-earth voltage on one or two, phases falls below a set voltage threshold for a set length of time. | Threshold voltage range: 2 - 15kV |
| Voltage resolution: 1V |
| Time range: 0.1 - 100 sec |
| Time resolution: 0.1 sec |
| 22.8 | Live load blocking
Live load blocking prevents a re-closer from closing if any of the load side terminals
are live. | Live Load Threshold Voltage range: 2 - 15kV |
| 22.9 | Dead lockout
| Dead lockout prevents a reclose unless one or more of the source side or load side
terminals are live. If all terminals are dead, then the controller goes to lockout |
| 22.10 | Envelope and low frequency
This feature trips the re-closer when the system frequency exceeds the under and
over frequency trip threshold values. Frequency tripping range: 45 - 65 Hz | Relay 81
Frequency calculation: Once per cycle over a two-cycle period
Number of under/over frequency cycles before tripping: 2 - 1000
Accuracy: ±0.05Hz |
| 22.11 | Over voltage | Relay 59 |
| 22.12 | Low voltage | Relay 27 |
| 22.13 | Distance | Relay 21 |
| 22.14 | Directional blocking
Directional protection
| 67 relay PGQ/67N
a protection feature that restricts tripping on faults to a
designated side of the re-closer. It prevents nuisance tripping if network
conditions are causing "false" earth faults. In radial systems, Directional Blocking
prevents nuisance tripping by blocking faults in the source direction and only responding to faults in the load direction.
Distinct protection for faults in the forward and reverse direction. A forward fault may
use a different time-current curve and settings to a reverse fault (i.e. these are
individually selectable). Both the forward protection and reverse protection are
operating at the same time. This is an additional protection feature |
| 22.15 | Cold load picks up(OPTIONAL)
Cold load pick-up allows for a loss of diversity when a load has been without supply
for a period. | Multiplier range: 1 - 5 |
| Multiplier resolution: 0.1 |
| Time Constant range: 1 - 480 min |
| Time constant resolution: 1 min |
| 22.16 | High impedance/conductor broken failure | Optional |
| 22.17 | harmonic | optional |
| 22.18 | Protection time-current curves: | 1. IEC/IEEE ,2.ANSI(OPETIONAL)
3.(optional Non Standard Inverse Time Curves) |
| IEC 60255 CURVES | Inverse,Very Inverse and Extremely Inverse. |
| IEEE C37.122 | Moderately Inverse,Very Inverse and Extremely Inverse. |
| 22.19 | Instantaneous protection
Instantaneous protection works by tripping the re-closer if the line current exceeds
the Instantaneous Multiplier x Setting Current. | Multiplier range: 1 - 30 |
| Resolution of setting: 0.1 |
| Max effective setting: 12.5kA |
| 22.20 | Definite time protection
Definite Time is an alternative to Inverse Time protection. It works by tripping the
Re-closer at a fixed time after pick-up. | Setting current range: 10 - 1260A |
| Definite time resolution: 0.1 sec |
| Definite time range: 0.01 - 100 sec |
| Setting current resolution: 1A |
| 22.21 | Sensitive Earth Fault (SEF) | SEF trip Current Range: | 5A-25A
MIN 5A(to Ground)/MIN25A(to phases) |
| SEF operating time range: | 0.1-999sec |
| SEF trip current setting resolution: | 1A |
| SEF operating time resolution: | 0.1S |
| 22.22 | Under / Over Voltage Protection
When selected, and a nominal Phase to Earth System operating voltage is set, the UOV Protection works within a defined threshold above and below the specified
voltage. | Under Voltage Lower Threshold Range:
50% - 88% |
| Over Voltage Upper Threshold Range: 112% - 150% |
| Trip After X Secs Range: 0 - 300 Seconds |
Phase Logic
1.When ALL phases deviate beyond thresholds
2.When ANY phase voltage deviates beyond the thresholds
3.When the numerical AVERAGE of all phase Voltages deviates beyond the threshold. |
| 22.23 | Inrush restraint
Inrush restraint raises the phase and earth threshold currents for a short period of
time to allow for short duration inrush currents when closing onto a load. | Multiplier range: 1 - 30 |
| Multiplier resolution: 0.1 |
| Time range: 0.05 - 30 sec |
| Time resolution: 0.05 sec |
| 23 | MEASUREMENT FUNCTIONS | |
| 23.1 | Voltage | By phase,line and neutral |
| 23.2 | Current (0-1250A) | By phase ,line and neutral |
| 23.3 | Power (Active and reactive) | By phase and line |
| 23.4 | Energy (Active and reactive) | By phase and line |
| 23.5 | Power factor | By phase and line |
| 22.6 | Load profile registry (Amperage, voltage, power,energy power factor) | 1.registry Every 15 minutes
2.Optional adjustable (0-60MIN) |
| 24 | ADDITIONAL FUNCTIONS: |
| 24.1 | Events Registrar | 216 records of events 216 records of remote control216 records of events of failure 45 records for fault waveform(15before and 30 after)216 records of history events |
| 24.2 | The battery status monitor |
| 24.3 | Inputs and outputs programmable by the user |
| 24.4 | Native protocol Mod-bus/DNP3.0 profile |
| 25 | COMMUNICATION PORTS: |
| 25.1 | RS232 for Setting of communication protocols and Maintain of the control by PC |
| 25.2 | RJ45 for Setting, Program and Receiving of control BY PC |
| 25.3 | RS-232 for communication | With DNP 3.0 /Mod-bus interface |
| 25.4 | RS-485 for communication | With DNP 3.0 /Mod-bus interface |
| 25.5 | RJ45 for remote communication | With DNP 3.0/IEC61850 standard interface |
| 25.6 | GRPS or Bluetooth or WI-FI or radio to connect with laptop |
| 25.7 | Unit with 1 or 2 Fiber optic port and 3 RJ45 Ethernet communication (option) |
| 25.8 | Protocol IEC60870-5-104/IEC60870-5-101 /DNP3.0/MODBUS/IEC61850(option) |
| 25.9 | COMMUNICATION BETWEEN RELAYS(OPTIONAL) |
| 26 | Supply voltage: | 110/125/220/220VAC/DC(OPTIONAL) |
| 27 | Frequency: | 50Hz/60 Hz(OPTIONAL) |
| 28 | Back-up batteries: sealed free maintance ,rechargeable in control box ,monitor of power on diagnostic and continuous self monitoring | 1.2AH/7AH/17AH/24AH(OPTIONAL)
2.2x12V=24VDC or 4x12v=48VDC
3.48hours with 20w if loss of power |
| 29 | Life years of recloser | 10years |
| Life years of battery | 5 years |
| 30 | Integrated battery charger/monitor is included |
| 31 | 12VDC integrated auxiliary output to power a radio or moden another device for remote or local data transmission |
| 32 | Included of Heating resistors |
| 33 | Included of Control cable 15M and power cable from PT (option) |
| 34 | Included of Setting ,Programming and Receiving software |
| 35 | Including of ac lamps and heaters of moisture contol |
| 36 | Including of electricnic magnetic lock for control box |
| 37 | Microprocessor realy in the front will be with IP20 to avoid of dust ,insert ,air contaminats ,high humidity and vibration. |
| 38 | Main Protection Function Schematic |
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