GE
power system. The output contacts change
Recommended for manually reset switches
Grid Solutions
Model SPVRA
Three Phase Voltage Monitor
Standard Features
Phase Unbalance: 8 %
Adjustable Trip Delay 1 to 10 seconds
after failure occurs.
Output Relay: normally de-energized:
Form C contacts for easy circuit
configuration.
Electro - Mechanical Indicator: retains
memory of fault until manually reset.
Door or Panel mounting.
Status Indicator: bi-colored LED Green:
Output Relay De-energized (Normal
Condition) Red: Output Relay
Energized (Fault Condition) Dark:
Output relay De energized (Input
Power Off).
Single Phase, Phase Reversal, Phase
Unbalance and Phase Loss Protection:
Operates the output relay after a
preselected time.
Overvoltage and Undervoltage
Protection: Operates when voltage
exceeds 115 % or goes below 80 %
after a preselected time.
Automatic or Manual - Automatic
Reset to Normal: upon removal of fault
conditions. Manual Reset: Operations
from a local pushbutton in cover or
from a remote contact.
The Model SPVRA Voltage Sensing Relay is
designed to protect against single phase,
phase loss, phase unbalance, phase
reversal, and under or over voltage in a
Application
Protection of three phase electric
equipment sensitive to damage from a
phase loss or phase unbalance. Phase
reversal, phase sequence, undervoltage &
overvoltage protection.
Normal Input Voltages
120 to 600 Vac, 60 Hz., 380 to 415 Vac, 50 Hz.
Ambient Temperature Range
Operation: - 30 °C to +60 °C.
Storage - 40 °C to + 85 °C.
Terminals screws are #6-32 nickel plated
brass.
Shipping weight 2.0 lbs
SPVRA Typical Wiring Diagram
LINE
REGULATORY AGENCY APPROVALS
U U
L
103039, CANADIAN
L
How to Order Relays
SPVRA - XXX
Input Voltage
120, 208, 240, or 575Vac (60 Hz)
380 or 415Vac (50 Hz
103039
their normal state only when a phase loss,
phase unbalance, phase reversal, under or
overvoltage occurs for onger than the
preset trip delay. A total power loss deenergization of the SPVRA relay will not
change the output contact position.
and breakers applications. The SPVRA is
suitable for loss of phase with motor loads.
LOAD
Contacts transfer
only on a fault.
unbalance of 8 % occurs for longer than the preselected time delay
enclosed which can be either panel or door mounted. The terminal
hardware is set for panel or door mounted. The terminal hardware
SPVRA Dimensions
SPVRA Operation with Options
A correctly installed SPVRA Voltage Sensing Relay will protect a
power system against damage due to single phase and phase loss,
phase reversal, phase unbalance , and under and over voltage.
When operating under normal power conditions, the bi-colored
LED Relay Status will be green indicating the de-energized state of
the output relay.
If a single phase, phase sequence, phase reversal, phase loss or
of 1 to 10 seconds, the output relay is energized and changes
state. If the voltage level dips below 80 % but is above 60 % after
the preselected time, or if the voltage exceeds 115 % for a
preselected time the the output relay changes state. This output
relay returns to its normal de-energized state when undervoltage
returns to 90% or the overvoltage reduces to 107 %. Whenever
the output relay contacts are energized indicating a fault, the bicolored LED “ Relay Status ” will be red.
With the manual reset, a local reset push-button is provided on
the front of the relay. Two terminals provide can be used for a
normally close remote reset button. When the main power is
restored, the output relay is energized immediately if a reset
button has not been operated.
The output relay has single Form C contact.
The SPVRA relay is package is in a high impact thermoplastic
is set for panel mounting but is easily reversed for door mounting.
A clear cover is provided to prevent accidental mechanical
indicator changes.
1. ELECTROMECHANICAL
DIAGNOSTIC INDICATOR
Phase Loss.
2. BI-Colored LED INDICATOR
Power system condition.
Normal (green)
Trip (red).
3. ADJUSTABLE SYSTEM DELAY:
Single phase.
Phase loss.
Phase unbalance
Phase reversal
Under & over voltage.
Grid-AIS-L4-ITI_Model_SPVRA-1582-2017_08-EN. © Copyright 2017. General Electric Company
and Instrument Transformers LLC reserve the right to change specifications of described
products at any time without notice and without obligation to notify any person of such changes.
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