Schweitzer Engineering Laboratories SEL-701 - Specifications

Date Code 20010719 701 Motor Protection Relay
Introduction & Specifications
Specifications
1.11
Specifications
Standard Relay Features & Functions
Phase Current Inputs
Nominal Current, I
NOM:
1 A or 5 A
Range: 0.05–20.00 • I
NOM
Burden: 0.14 VA @ 5 A, 5 A tap
0.06 VA @ 1 A, 1 A tap
Continuous: 3 • I
NOM
200 Second Thermal: 10 • I
NOM
10 Second Thermal: 20 • I
NOM
1 Second Thermal: 50 • I
NOM
Measuring Error: ±1%, ±0.01 • I
NOM
Neutral/Ground Current Input
Nominal
Current, IN
NOM
: 1 A or 5 A
Range: 0.005–2.000 • IN
NOM
Burden: 0.28 VA @ 5 A, 5 A tap
0.19 VA @ 1 A, 1 A tap
Continuous: 0.3 • IN
NOM
1 Second Thermal: 5.0 • IN
NOM
Measuring Error: ±1%, ±0.01 • I
NOM
Motor Thermal Model
Locked Rotor Time: 1.0–240.0 s
Locked Rotor Current: 0.5–16.0 • I
NOM
Service Factor: 1.0–1.5
Setting Modes:
45 standard curve shapes
Nameplate ratings
Custom curve shape
Pickup Error: <±1%, ±0.01 • I
NOM
Timing Error: ±2.5%, ±25 ms for
currents > 1.1 times
multiples of pickup
Independent Stop/Run Cooling Rates
Thermal estimate retained through relay
power cycle.
Overcurrent Elements
(Phase, Residual, Negative-Sequence)
Setting Range: 0.05–20.00 • I
NOM
Time Delays: 0.00–400.00 s
Neutral/Ground Overcurrent Element
Setting Range: 0.005–2.000 • IN
NOM
Time Delays: 0.00–400.00 s
Current Unbalance Element
Alarm and Trip Elements
Setting Range: 2%–80%
Time Delays: 0.00–400.00 s
Error: <
±1%
Definitions
For I
av
> FLA
UB% = 100% • |I
m
–I
av
|/I
av
For I
av
< FLA
UB% = 100% • |I
m
–I
av
|/FLA
Where:
I
av
= Avg phase current
I
m
= Phase most different from I
av
FLA = Motor rated full load amps
Load-Loss/Load-Jam Function
Load-Loss Alarm and Trip
Setting Range: 0.10–1.00 • FLA
Load-Jam Trip
Setting Range: 0.5–6.0 • FLA
Time Delays: 0.00–400.00 s
Starts Per Hour, Time Between Starts
Maximum Starts/Hour: 1–15 starts
Minimum Time
Between Starts: 1–150 minutes
Start data retained through relay power cycle.
Phase Reversal Tripping
Phase reversal tripping based on current or
optional voltage inputs.
Meter Accuracy
Current Metering: <±1%,
±0.01 • I
NOM
Demand Current Metering: <±1%
Opt. Voltage Metering: <
±1%, ±0.2 V
Opt. Power Metering:
±2%
Opt. Power Factor Metering: <
±1.5%
Opt. Frequency Metering:
±0.01 Hz
Opt. kW, kVa, kVAR Demand:
±2%
Analog Output
Single Analog Current Output
Settable Range: 0–1 mA,
0–20 mA,
4–20 mA
Max. Load: 8 k or 400 ohms
Error:
±0.5%, Full Scale
Select from:
%FLA, %Thermal Cap, Hottest RTD, Avg phase
current, Max. phase current
Contact Inputs
6 Self-Wetted Contact Inputs,
Programmable Function
Contact Outputs
1 Trip Contact, 3 Programmable Contacts,
Relay Self-Test Alarm
Form C Contacts
Make/Carry/Interrupt Ratings
Make: 30 A
Carry: 6 A
Interrupt: 8 A Resistive @ 250 Vac
0.75 A, L/R = 40 ms @ 24 Vdc
0.50 A, L/R = 40 ms @ 48 Vdc
0.30 A, L/R = 40 ms @ 125 Vdc
0.20 A, L/R = 40 ms @ 250 Vdc
Serial Ports
Front-Panel EIA-232 Port: 300–19200 baud
ASCII text communication
Rear Panel
ASCII EIA-232 port: 300–19200 baud
Or Modbus
™
EIA-485 port: 300–19200 baud
EIA-485 port isolation: 500 V
Optional Features & Functions
Optional Phase Voltage Inputs
Nominal Voltage: 0–300 Vac
Four-Wire Wye or
Open-Delta Voltages
Burden: <2 VA at 300 V
Measuring Error:
±1%, ±0.2 V