1 INTRODUCTION
1-2
Table 1-1 Model 269 Relay Features
Protection Features
- Overloads
- Stator Winding Overtemperature (Alarm, High Alarm and Trip)
- Multiple Starts
- Short Circuit
- Locked Rotor
- Rapid Trip/Mechanical Jam
- Unbalance/Single Phasing
- Ground Fault (Alarm and Trip)
- Bearing Overtemperature (Alarm and Trip)
- Undercurrent (Alarm and Trip)
- Variable Lock-Out Time
- Phase Reversal (Meter Option)
Operational Features
- Microcomputer controlled
- Keypad programmable
- 48 character alphanumeric display
- Built-in "HELP" function
- Eight selectable standard overload curves
- Continual relay circuitry self-check
Monitoring and Display Features
- Negative sequence phase current unbalance measurement
- Ground fault (earth leakage) current measurement
- Up to six stator RTD inputs
- Two additional RTD inputs
- Monitoring of motor ambient air temperature
- Display of all SETPOINTS or ACTUAL VALUES upon request
- Display of relay TRIP/ALARM and HELP messages
Communications and Control Features
- One latched, main trip relay
- One alarm relay
- Two auxiliary relays
- Emergency restart capability
- Pre-trip alarm warnings
- 4-20mA output of motor current as a percentage of full load, motor thermal capacity, hottest stator RTD tem-
perature, percentage of phase CT secondary current, or bearing RTD
Statistical and Memory Features
- Recall of all pre-trip motor values
- Tamperproof setpoints stored in non-volatile memory
- Microcomputer "learns" motor inrush current
- Accumulation of motor running hours
Voltage and Power Metering (available with MPM)
- Display of 3 phase or line voltages, kWatts, kVars, Power Factor, and frequency.
- Protection features based on Voltage, Power Factor, kVars, and voltage sensed phase reversals.
- Pre-trip values of average voltage, kWatts, kVars, Power Factor, and frequency.
- Accumulated MegaWattHours.
4.
Protection for loss of suction for pumps or loss of
air flow for fans using the undercurrent feature.
5.
Protection of motor and load bearings from exces-
sive heat buildup due to mechanical wear.
6.
Protection of motors operated in environments with
varying ambient temperatures.
7.
Complete protection, allowing maximum motor
utilization with minimum downtime, for all AC mo-
tors.
Содержание MULTILIN 269 MOTOR MANAGEMENT RELAY Series
Страница 3: ...TABLE OF CONTENTS ii GLOSSARY ...
Страница 11: ...2 INSTALLATION 2 2 Figure 2 2a Phase CT Dimensions ...
Страница 12: ...2 INSTALLATION 2 3 Figure 2 2b Ground CT 50 0 025 3 and 5 window ...
Страница 13: ...2 INSTALLATION 2 4 Figure 2 2c Ground CT 50 0 025 8 window ...
Страница 14: ...2 INSTALLATION 2 5 Figure 2 2d Ground CT x 5 Dimensions ...
Страница 17: ...2 INSTALLATION 2 8 Figure 2 4 Relay Wiring Diagram AC Control Power ...
Страница 19: ...2 INSTALLATION 2 10 Figure 2 6 Relay Wiring Diagram Two Phase CTs ...
Страница 20: ...2 INSTALLATION 2 11 Figure 2 7 Relay Wiring Diagram DC Control Power ...
Страница 29: ...2 INSTALLATION 2 20 Figure 2 11 269 Drawout Relay Physical Dimensions ...
Страница 30: ...2 INSTALLATION 2 21 Figure 2 12 269 Drawout Relay Mounting ...
Страница 31: ...2 INSTALLATION 2 22 Figure 2 13 269 Drawout Relay Typical Wiring Diagram ...
Страница 34: ...2 INSTALLATION 2 25 Figure 2 16 MPM Mounting Dimensions ...
Страница 35: ...2 INSTALLATION 2 26 Figure 2 17 MPM to 269 Typical Wiring 4 wire Wye 3 VTs ...
Страница 36: ...2 INSTALLATION 2 27 Figure 2 18 MPM to 269 Typical Wiring 4 wire Wye 2 VTs ...
Страница 37: ...2 INSTALLATION 2 28 Figure 2 19 MPM to 269 Typical Wiring 3 wire Delta 2 VTs ...
Страница 38: ...2 INSTALLATION 2 29 Figure 2 20 MPM to 269 Typical Wiring 2 CT ...
Страница 39: ...2 INSTALLATION 2 30 Figure 2 21 MPM Wiring Open Delta ...
Страница 40: ...3 SETUP AND USE 3 1 Figure 3 1 Front Panel Controls and Indicators ...
Страница 74: ...Setpoints Pg 6 3 SETUP AND USE 3 35 13 END OF PAGE SIX END OF PAGE SIX SETPOINT VALUES SETPOINT VALUES ...
Страница 86: ...3 SETUP AND USE 3 47 Figure 3 2 Wiring Diagram for Contactors ...
Страница 87: ...3 SETUP AND USE 3 48 Figure 3 3 Wiring Diagram for Breakers ...
Страница 93: ...3 SETUP AND USE 3 54 Figure 3 5 Standard Overload Curves ...
Страница 102: ...4 RELAY TESTING 4 2 Figure 4 1 Secondary Injection Test Set AC Input to 269 Relay ...
Страница 103: ...4 RELAY TESTING 4 3 Figure 4 2 Secondary Injection Test Set DC Input to 269 Relay ...
Страница 106: ...4 RELAY TESTING 4 6 Figure 4 3 Hi Pot Testing ...
Страница 108: ...5 THEORY OF OPERATION 5 2 Figure 5 1 Hardware Block Diagram ...
Страница 110: ...5 THEORY OF OPERATION 5 4 Figure 5 2 Firmware Block Diagram ...
Страница 112: ...6 APPLICATION EXAMPLES 6 2 Figure 6 1 Thermal Limit Curves ...
Страница 126: ...APPENDIX H H 3 Figure H 1 Excitation Curves Figure H 2 Excitation Curves Method ...
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