SMPR-1v1 XX0 pages

SMPR-1 v1.XX
Current - Voltage - Power
Measurement & Protection Relay

Summarize Measurement
and Protection Relay

DESCRIPTION
The SMPR-1 has been designed to measure the line and the ground RMS currents and supply RMS voltages
under normal conditions or under disturbances. This information is internally processed by the microprocessor, to
take the protection actions defined by the user under ANSI, IAC or IEC standards. The operational conditions of
the breaker or disconnector are also signalized

APPLICATIONS

FEATURES

•

•

•

Primary and backup protections for power plants,
utility and industrial distribution systems.
Protection of transformers, overhead lines, cables
and generators.

PROTECTION AND FUNCTIONALITY
•
•
•
•
•
•
•
•
•
•

•
•
•
•
•
•

(27) Undervoltage.
(32) Directional power.
(37) Undercurrent.
(46) Negative sequence current.
(47) Phase-sequence voltage
(50) Instantaneous phase overcurrent.
(50N/50G) Instantaneous ground overcurrent.
Overload alarm pickup level.
(51) Inverse time phase overcurrent
(51N/51G) inverse time ground overcurrent,
ANSI, IAC or IEC/BS142 curves included:
Moderately inverse
Normal inverse
Very inverse
Extremely inverse
Definite time
(55) Power factor.
(59) Overvoltage.
(68) Blocking output.
(81) Underfrequency and Overfrequency.
(86) Lockout.
Accumulated KA per phase on breaker
interruption.

•
•
•
•
•
•

CT primary ratio selectable in 5 A steps (5 to
5000 A).
Touchpad programming.
1 trip relay.
3 auxiliary relays that can be associated to the
various functions.
Power loss or internal fault control relay.
3 programmable Digital inputs and 1 Digital input
for breaker status.
Breaker operation failure alarm on trip command.

SIGNALLING AND DIGITAL MEASUREMENT
•
•
•
•
•
•
•
•
•
•
•

LED and LCD display indication.
Last trip cause and relative data.
Indication and storage of fault condition and their
values.
Indication of the breaker status (open, close,
earthed)
RMS line and ground currents.
RMS line or phase voltages.
Active power (kW), reactive power (kvar) and
apparent power (kVA).
Active energy (MWh) and reactive energy (Mvarh).
Power factor and system frequency.
Positive and negative real power (kW) and reactive
power (kvar).
Demand and maximum demand: current in each
phase (A), real power (kW), reactive power (kvar).

COMMUNICATION

APPLICABILITY

•

Systems:
Frequency
Current:
Voltage:

•
•

Remote communication using a PC or PLC by
RS485 or RS232
Remote programming of the setpoints.
Remote breaker opening or closing.

Quality certified ISO 9001:2000

Wye or delta three-phase
50 and 60 Hz
5000 A maximum
69 kV maximum

Protection relay
SMPR-1v1.XX_GBBR_010608