Solcon MPS 3000, Руководство пользователя

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INTRODUCTION
Page 5 of 67
INTRODUCTION
The MPS 3000 Motor Protection System is a new generation of micro processor based relay / controller designed to
operate with a three (3) phase induction motors.
True RMS voltages and currents are measured at a sampling rate of 0.5 ms, enables the MPS3000 to be used with
electronic motor drives like soft starters.
The MPS3000 incorporates two main features.
a. Motor protection.
b. Supervision and communication.
The MPS3000-C is identical to MPS3000, but incorporates in addition to all MPS3000 features, also:
c. Motor control.
Protection Features
AC motors are very rugged and reliable when operating within product specification limits. However, they are
usually designed to operate close to their rated limits with minimal margins for operating under abnormal conditions.
A comprehensive protection device is required to accurately create a Thermal Modeling, in order to allow motor run
safely up to its limits. The Thermal Model is based mainly on currents, but it may be biased also by RTD and by
Unbalance Currents.
This relay should protect the motor from abnormal conditions in the mains voltage, motor and cabling faults as well
as operator malfunctions.
The MPS3000 monitors three phase voltages, three phase + ground fault currents, temperature inputs from up to 10
sensors, Four analog inputs and four programmable Discrete (Optically isolated logical) inputs. The MPS3000-C
incorporates additional 16 discrete digital inputs.
The MPS3000 incorporates four programmable Analog Outputs as well as four programmable output change-over
(form C) relays. One or more relays can be configured as Trip and / or Alarm. All inputs and outputs are combined
to provide the most comprehensive protection package.
The MPS3000 can handle 52 different trips / alarms.
Voltage base protections
Under-voltage, Over-voltage, Phase-loss, Phase
sequence, Maximum start time.
Current base protections Too many starts, Under current, Load increase,
Over-current level 1 (Stall/Locked protection) ,
Over-current level 2 (Short circuit) Thermal
Overload, Unbalanced current, Ground fault
current.
Voltage/Current based protections Under power, Low power factor.
Temperature based Up to 10 sensors (10 RTDs are standard or
optionally 6 RTDs + 4 thermistors).
General based protection Control circuit fault (C only), Welded contact (C
only), Three external faults, Comm. Port Failure.
Analog Inputs based protection For external devices such as Vibration sensor.