Schweitzer Engineering Laboratories, Inc. SEL-787-2, -3, -4 Data Sheet
37
Type Tests
Environmental Tests
Enclosure Protection: IEC 60529:2001 + CRDG:2003
IP65 enclosed in panel
(2-line display models)
IP54 enclosed in panel
(touchscreen models)
IP50-rated terminal dust protection
assembly (SEL Part #915900170).
The 10°C temperature derating
applies to the temperature
specifications of the relay.
IP20 for terminals and the relay rear
panel
Vibration Resistance: IEC 60255-21-1:1988
IEC 60255-27:2013, Section 10.6.2.1
Endurance: Class 2
Response: Class 2
Shock Resistance: IEC 60255-21-2:1988
IEC 60255-27:2013, Section 10.6.2.2
IEC 60255-27:2013, Section 10.6.2.3
Withstand: Class 1
Response: Class 2
Bump: Class 1
Seismic (Quake Response): IEC 60255-21-3:1993
IEC 60255-27:2013, Section 10.6.2.4
Response: Class 2
Cold: IEC 60068-2-1:2007
IEC 60255-27:2013, Section 10.6.1.2
IEC 60255-27:2013, Section 10.6.1.4
–40°C, 16 hours
Dry Heat: IEC 60068-2-2:2007
IEC 60255-27:2013, Section 10.6.1.1
IEC 60255-27:2013, Section 10.6.1.3
85°C, 16 hours
Damp Heat, Steady State: IEC 60068-2-78:2001
IEC 60255-27:2013, Section 10.6.1.5
Severity Level: 93% relative humidity
minimum
40°C, 10 days
Damp Heat, Cyclic: IEC 60068-2-30:2001
IEC 60255-27:2013, Section 10.6.1.6
Test Db; Variant 2; 25°–55°C,
6 cycles, 95% relative humidity
minimum
Change of Temperature: IEC 60068-2-14:2009
IEC 60255-1:2010, Section 6.12.3.5
–40° to +85°C, ramp rate 1°C/min,
5cycles
Dielectric Strength and Impulse Tests
Dielectric (HiPot): IEC 60255-27:2013, Section 10.6.4.3
IEEE C37.90-2005
1.0 kVac on analog outputs, Ethernet
ports
2.0 kVac on analog inputs, IRIG
2.5 kVac on contact I/O
3.6 kVdc on power supply,
IN and VN terminals
Impulse: IEC 60255-27:2013, Section 10.6.4.2
Severity Level: 0.5 J, 5 kV on power
supply, contact I/O, ac current, and
voltage inputs
0.5 J, 530 V on analog outputs
IEEE C37.90:2005
Severity Level: 0.5 J, 5 kV
0.5 J, 530 V on analog outputs
RFI and Interference Tests
EMC Immunity
Electrostatic Discharge
Immunity:
IEC 61000-4-2:2008
IEC 60255-26:2013, Section 7.2.3
IEEE C37.90.3:2001
Severity Level 4
8 kV contact discharge
15 kV air discharge
Radiated RF Immunity: IEC 61000-4-3:2010
IEC 60255-26:2013, Section 7.2.4
10 V/m
IEEE C37.90.2-2004
20 V/m
Fast Transient, Burst
Immunity:
IEC 61000-4-4:2012
IEC 60255-26:2013, Section 7.2.5
4 kV @ 5.0 kH
2 kV @ 5.0 kHz for comm. ports
Surge Immunity: IEC 61000-4-5:2005
IEC 60255-26:2013, Section 7.2.7
2 kV line-to-line
4 kV line-to-earth
Surge Withstand Capability
Immunity:
IEC 61000-4-18:2010
IEC 60255-26:2013, Section 7.2.6
2.5 kV common mode
1 kV differential mode
1 kV common mode on comm. ports
IEEE C37.90.1-2002
2.5 kV oscillatory
4 kV fast transient
Conducted RF Immunity: IEC 61000-4-6:2008
IEC 60255-26:2013, Section 7.2.8
10 Vrms
Magnetic Field Immunity: IEC 61000-4-8:2009
IEC 60225-26:2013, Section 7.2.10
Severity Level:
1000 A/m for 3 seconds
100 A/m for 1 minute; 50/60 Hz
IEC 61000-4-9:2001
Severity Level:
1000 A/m
IEC 61000-4-10:2001
Severity Level:
100 A/m (100 kHz and 1 MHz)
Power Supply Immunity: IEC 61000-4-11:2004
IEC 61000-4-17:1999
IEC 61000-4-29:2000
IEC 60255-26:2013, Section 7.2.11
IEC 60255-26:2013, Section 7.2.12
IEC 60255-26:2013, Section 7.2.13
EMC Emissions
Conducted Emissions: IEC 60255-26:2013 Class A
FCC 47 CFR Part 15.107 Class A
ICES-003 Issue 6
EN 55011:2009 + A1:2010 Class A
EN 55022:2010 + AC:2011 Class A
EN 55032:2012 + AC:2013 Class A
CISPR 11:2009 + A1:2010 Class A
CISPR 22:2008 Class A
CISPR 32:2015 Class A
Radiated Emissions: IEC 60255-26:2013 Class A
FCC 47 CFR Part 15.109 Class A
ICES-003 Issue 6
EN 55011:2009 + A1:2010 Class A
EN 55022:2010 + AC:2011 Class A
EN 55032:2012 + AC:2013 Class A
CISPR 11:2009 + A1:2010 Class A
CISPR 22:2008 Class A
CISPR 32:2015 Class A
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