Schweitzer Engineering SEL-300G Quick Start Manual Download

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SEL-300G Relay

Quick-Start Guide

Date Code 20170804

Specifications

Type Tests

Frequency and Rotation

System Frequency:

60 or 50 Hz

Phase Rotation:

ABC or ACB

Frequency Tracking Range:

20–70 Hz

Note:

required for frequency tracking.

Communications Ports

EIA-232:

1 front and 2 rear

EIA-485:

1 rear

Baud rate:

300–38400

Time-Code Input

Relay accepts demodulated IRIG-B time-code input at Port 2.
Relay time is synchronized to within ±5 ms of time-source input.

Dimensions

See

Figure 10

for exact relay dimensions.

Operating Temperature

–40° to +85°C (–40° to +185°F)

Note:

LCD contrast impaired for temperatures below –20°C.

Weight

2U Rack Unit:

Minimum: 6.2 kg (13.5 lbs)

Maximum: 6.8 kg (15 lbs)

3U Rack Unit:

Minimum: 7.5 kg (16.5 lbs)

Maximum: 8.4 kg (18.5 lbs)

Type Tests

Cold:

IEC 60068-2-1:2007

Test Ad; 16 hr @ –40°C

Dry Heat:

IEC 60068-2-2:2007

Test Bd: 16 hr @ +85°C

Damp Heat, Cyclic:

IEC 60068-2-30:1980, Test Db; 25°

to 55°C, 6 cycles, 95% humidity

Dielectric Strength:

IEC 60255-5:2000, IEEE C37.90-

2005, 2500 Vac on analogs,
contact inputs, and contact
outputs; 3100 Vdc on power
supply; 2200 Vdc on EIA-485
communications port. Type tested
for 1 minute.

Impulse:

IEC 60255-5:2000, 0.5 J, 5000 V

Vibration:

IEC 60255-21-1:1988

[EN 60255-21-1:1995]

Class 2 Endurance, Class 2

Response

Shock and Bump:

IEC 60255-21-2:1988

[EN 60255-21-2:1995], Class 1

Shock Withstand, Class 2 Shock
Response

Seismic:

IEC 60255-21-3:1993

[EN 60255-21-3:1995], Class 2

1 MHz Burst Disturbance:

IEC 60255-22-1:1988, Class 3

(2500 V common and differential
mode)

Emissions:

IEC 60255-25:2000

Conducted Radio Frequency: ENV 50141:1993 10 V/m

IEC 61000-4-6:1996

[EN 61000-4-6:1996]

10 V/m, IEC 60255-22-6:2001 10

V/m

Digital Radio Telephone RF:

ENV 50204:1995 10 V/m at 900

MHz and 1.89 GHz

Electrostatic Discharge:

IEC 60255-22-2:2008
IEC 61000-4-2:2008
IEEE C37.90.3-2001

Severity Level:

Contact Discharge: ±2, 4, 6, and 8

Air Discharge: ±2, 4, 8, and 15 kV

Radiated Radio Frequency:

ENV 50140:1993 10 V/m,

IEC 60255-22-3:2000 10 V/m,

IEC 61000-4-3:1998 10 V/m,

IEEE C37.90.2-1995 35 V/m, no

keying test, frequency elements
accurate to 0.1 Hz

Fast Transient Disturbance:

IEC 60255-22-4:2008
IEC 61000-4-4:2011

Severity Level:

Class A: ±4 kV, 5 kHz
±2 kV, 5 kHz on communication

ports

Object Penetration and Dust

Ingress:

IEC 60529:1989 [EN 60529:1992]

IP30

Protection Against Splashing

Water:

IEC 60529:1989 [EN 60529:1992]

IP54 from the front panel using the
SEL-9103

Surge Withstand:

IEC 60255-22-1:2007
Severity Level:

Common Mode: 2.5 kV on Power,

CT, PT, I/O
1.0 kV on Communications Ports

Differential Mode: 1.0 kV on

Power, PT, I/O

IEEE C37.90.1-2002
Severity Level:

Oscillatory: ± 2.5 kV, 1 MHz

common mode and differential

Fast Transient: ±4.0 kV, 2.5 kHz

common mode and differential

Generic Standard:

EN 50082-2:1995

Processing Specifications

AC Voltage and Current Inputs

16 samples per power system cycle, 3 dB low-pass filter cutoff

frequency of 560 Hz.

Digital Filtering

• One cycle cosine after low-pass analog filtering.
• Net filtering (analog plus digital) rejects dc and all harmonics

greater than the fundamental.

• Second-harmonic current and third-harmonic voltage filters are

also included for specific protection functions.

Protection and Control Processing

Four times per power system cycle for all elements except out-of-

step, loss-of-field, and RTD elements. Loss-of-field and out-of-
step elements are processed two times per power system cycle
and the RTD elements once in two seconds.

Relay Element Setting Ranges and Accuracies

Phase Distance Element (21)

5 A Model

Reach:

0.1–100.0 ohms

Offset:

0.0–10.0 ohms

Steady-State Impedance

Accuracy:

±5%, ±0.1 ohm

Minimum Phase Current:

0.5 A