ABB REL 301 Instruction Manual

struction leaflet before energizing the system. Failure to do so may result in injury to personnel or damage to the equipment, and may affect the equipment warranty. If the REL 301/302 relay system is mounted in a cabinet, the cabinet must be bolted to the floor, or otherwise secured before REL 301/302 installation, to prevent the system from tipping over. All integrated circuits used on the modules are sensitive to and can be damaged by the discharge of static elec- tricity. Electrostatic discharge precautions should be observed ...

302 (Pilot Relay System). It is intended primarily for use by engineers and technicians involved in the installation, testing, operation and maintenance of the REL 301/302 system. Equipment Identification The REL 301/302 equipment is identified by the Catalog Number on the REL 301/302 chassis name- plate. The Catalog Number can be decoded by using Catalog Number Table in Section 1.6.6.Both REL 301 and REL 302 can be either vertically or horizontally mounted. Production Changes When engineering and production changes are made to ...

PAGE SECTION 1 PRODUCT DESCRIPTION 1.1 INTRODUCTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 1.2 REL 301/302 FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 1.3 REL 301/302 CONSTRUCTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 1.4 UNIQUE FEATURES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4 1.5 UNIQUE REMOTE COMMUNICATION (WRELCOM®) PROGRAM . . . . . . . . . . . . . 1-6 1.6 SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

PAGE SECTION 1 REL 301/302 RELAY ASSEMBLY IN FT-42 CASE (PHOTO). . . . . . . . . . . . . . . . . . . . 1-1 REL 301/302 LAYOUT (VERTICAL) (SHEET 1 OF 2) . . . . . . . . . . . . . . . . . . . . . . . 1-10 REL 301/302 LAYOUT (HORIZONTAL) (SHEET 2 OF 2 . . . . . . . . . . . . . . . . . . . . . . 1-11 REL 301/302 OUTER CHASSIS (PHOTO). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12 REL 301/302 INNER CHASSIS (PHOTO) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13 REL 301/302 RELAY PROGRAM FUNCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14 SECTION 2 REL 301/302 CHARACTER ...

CO-8 CURVE CHARACTERISTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-45 CO-9 CURVE CHARACTERISTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-46 CO-11 CURVE CHARACTERISTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-47 SECTION 4 REL 301/302 TERMINALS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13 REL 301/302 SYSTEM EXTERNAL CONNECTIONS (2 SHEETS) . . . . . . . . . . . .4-14, 4-15 SECTION 5 FILTER ( ...

Features added and improvements made to Version 1.11 1. REL 301 AND 302 1.1 Modified Ground distance units from partially crossed-polarized mho to self-polarized mho units for Zone1, Zone2, Zone3, and Pilot zone. The modification requires the addition of one reverse reach setting for each zone. New settings are as follows: • Zone1G R • Zone2G R • Zone3G R • PilotG R 1.2 Improved 3 – phase fault distance trip performance by modifying the algorithms calculation method. 1.3 Modified LED target coordination with stored target data for faulted phases. 1.4 Modified the performance of the programm ...

1.2.1 Standard Features for REL 301 (Non-Pilot) • 3-Zone distance phase and ground relay, with reversible Zone3 phase and ground; 4 impedance units per zone: 3 phase-to-ground; 1 phase-to-phase. • T1 timer (0 to 15 cycles) • Independent timers for phase and ground • Overcurrent supervision of phase and ground distance • Selectable Zone2 torque controlled overcurrent (phase or ground) • Inverse time directional or non-directional (selectable) overcurrent ground backup logic • Loss of potential supervision • Loss of current monitoring • Instantaneous forward directional phase and grou ...

• All features listed as standard for the REL 301 are included in the REL 302 also • Independent pilot phase and ground distance units • Permissive Overreach Transfer Trip (POTT) /Simplified Unblocking • Permissive Underreach Transfer Trip • Directional Comparison Blocking Scheme • POTT or Simplified Unblocking Weakfeed Terminal Logic • Instantaneous Forward Directional Overcurrent Function for High Resistance Ground Fault Supplement to Overreach Pilot • Instantaneous Reverse Directional Overcurrent Ground Function for Carrier Start on Blocking Scheme • Reclose Bloc ...

Consisting of 3 voltage transformers for VAN, VBN and VCN. • CT Module: Consisting of 4 current transformers for IA, IB, IC and IP, where IP is used for zero- sequence dual-polarizing ground current measurement. • Filter Module: Consisting of the anti-aliasing filters for the seven inputs from the vt and ct mod- ules, the multiplexer to the A/D converter, the A/D converter itself, and the Opto- isolator for the input contacts. • Microprocessor Module: Consisting of a microcontroller (16 bits Intel 80C196 at 10 MHz), two EPROM pro- gram memory chips; two RAM chips, an EEPROM for data retention, a real time ...

spond to the sampling rate (8 samples per cycle). Movement from state to state is con- trolled by a timer. The timer is loaded with a state time at the beginning of the state.The code executed within a state should be completed before the timer expires. The software then waits for the timer to time out. The fundamental frequency components are extracted from the samples (each cycle) and converted to voltage and current phasor values using a Fourier notch-filter algo- rithm. An additional dc-offset correction algorithm reduces overreach errors fr ...

take place at the terminal. 1.4.4 Self-checking Software REL 301/302 continuously monitors its ac input subsystems using multiple A/D con- verter calibration-check inputs, plus loss-of-potential and loss-of-current monitoring. Failures of the A/D converter, or any problem in a single ac channel which unbalances non-fault input, causes an alarm. Self-checking software includes the following func- tions: a. Digital Front-end A/D Converter Check b. Program Memory Checksum Immediately upon power-up, the relay does a complete EPROM checksum of pro ...

Wiring to FT-10 switches suitable for #12 wire lugs. 1.6.3 Contact Rating Data Trip Contacts - make & carry 30 A for 1 second, 10 A continuous capability, break 50 watts resistive or 25 watts with L/R =.045 seconds. Trip contacts are: • Trips A1, A2 • OC1 • Close-1, 2 Operating Speed (from fault detection to trip contact close (60 Hz) ac Voltage (VLN) ac Current (In) Rated Frequency Maximum Permissible ac Voltage (Thermal Rating) • Continuous • 10 Second Maximum Permi ...

• Non-Trip Contacts • 1A Continuous • 0.1A Resistive Interrupt Capability Supports 1000 Vac across open contacts Contacts also meet IEC - 255-6A, IEC - 255-12, IEC -255-16, BS142-1982. • RS-232C PONI - for single point computer communications • INCOM®/PONI - for local network communications 1.6.4 Chassis Dimensions And Weight Height: 17.875" (453.7 mm) Width: 5.876" (149 mm) Depth: 6.626" (168 mm) Weight: 24 lb (16 kg.) For Horizontal Mount: 19 inch adapter plate 1.6.5 Environmental and Type Test Data Ambient Temperature Range • For Operation -20°C to +60°C • For ...

Vertical - - - - - - - - - - - - - - - - - - - - - - - V TRIP 3-Pole Trip - - - - - - - - - - - - - - - - - - - - - - -3 Self-Polarized Ground Distance - - - - - - - - - - - - P CURRENT 1 A - - - - - - - - - - - - - - - - - - - - - - - - - A 5 A - - - - - - - - - - - - - - - - - - - - - - - - - B BATTERY VOLTAGE 48 Vdc - - - - - - - - - - - - - - - - - - - - - - - - -4 125 Vdc - - - - - - - - - - - ...