Item 9 - SEL 2488 GPS Clock.pdf

Schweitzer Engineering Laboratories, Inc. SEL-2488 Data Sheet

Advanced Time Synchronization

Key Features and Benefits The SEL-2488 Satellite-Synchronized Network Clock receives Global Navigation Satellite System (GNSS) time signals and distributes precise time via multiple output protocols, including IRIG-B, Precision Time Protocol (PTP) as defined by IEEE 1588-2008, and Network Time Protocol (NTP). The advanced capabilities of the SEL-2488 make it well suited for demanding applications like synchrophasors and for substations with multiple time synchronization requirements.

➤ Precise Time Accuracy Meets Demanding Requirements. Provides demodulated IRIG-B time output for protection applications, synchronizing relays, phasor measurement units (PMUs), and other IEDs to within ±40 ns average and ±100 ns peak accuracy to coordinated universal time (UTC). The SEL-2488 can act as a stratum 1 time server with typical client synchronization accuracy on a LAN of 0.5–2 ms. With purchase of the PTP option, the SEL-2488 can act as a PTP Grandmaster Clock providing ±100 ns peak time stamp accuracy to UTC.

➤ Holdover Oscillator Maintains Accuracy if GPS is Unavailable. Maintains average accuracy of 36 µs after 24 hours at constant temperature (315 μs, ±1ºC) with standard temperature compensated crystal oscillator (TCXO) holdover. With the oven-controlled crystal oscillator (OCXO) or double-oven-controlled crystal oscillator (DOCXO) holdover options, the average accuracies improve to 5 μs and 2.5 μs after 24 hours, respectively.

➤ Thirteen Standard Outputs Provide Flexible Time Distribution. Distributes time from eight time BNC outputs plus one DB-9 output, all configurable for IRIG-B or time pulse outputs. The DB-9 port can be used with SEL-2812 Fiber-Optic Transceivers With IRIG-B or SEL-3405 High-Accuracy IRIG-B Fiber-Optic Transceivers to send IRIG-B over long distances via a fiber-optic cable. The SEL-2488 also includes four standard Ethernet ports, which provide NTPv4. With purchase of the PTP option, the SEL-2488 can act as a PTP Grandmaster Clock (IEEE 1588-2008) with Default (Annex J), Power System (IEEE C37.238-2011/2017), and Power Utility Automation (IEC/IEEE 61850-9-3:2016) profiles. The SEL-2488 distributes NTP and PTP to four independent networks, and Ethernet ports are available in copper as well as single- or multimode fiber orderable in pairs.

➤ Six Optional Frequency Outputs. With the purchase of the frequency outputs hardware option, the SEL-2488 provides six SMA ports, one of which is a frequency-disciplined, TTL-compatible, 10 MHz square-wave frequency output and five of which are frequency-disciplined 10 MHz sine-wave frequency outputs.

➤ Dual Power Supplies Offer Redundancy. Provides an option for a second power supply that can receive power from a second source. SEL-9330-A power supplies support 125–250 Vdc or Vac input, and SEL-9330-C power supplies use 24–48 Vdc.

➤ Satellite Signal Verification (SSV) Provides Assurance. Receives signals from both GPS and GLONASS satellite systems for verification to provide a level of protection from GPS spoofing attacks.

➤ DHCP, LDAP, SNMP, and Syslog Support Ensure Easy and Secure Integration. Makes commissioning, management, and monitoring faster and more secure with DHCP Captive Port, LDAP authentication, SNMP read and trap support, and syslog event messaging.

SEL-2488 Satellite-Synchronized Network Clock

SEL-2488 Data Sheet Schweitzer Engineering Laboratories, Inc.

➤ Doubly Attached Node Implementing PRP (DANP) Support Provides Network Redundancy. Supports as many as two DANP interfaces that use all four rear-panel physical Ethernet ports, allowing a connection to two separate PRP networks without requiring PRP Redboxes. Each DANP interface supports PTP over PRP as a Doubly Attached Clock (DAC) device. The SEL-2488 complies with the IEC 62439-3:2016 standard.

➤ Active-Backup Port Bonding Provides Ethernet Failover. Active-backup port bonding logically combines two physical Ethernet ports into a single network interface with only one port active while the other serves as a failover backup. The SEL-2488 supports as many as two independent active-backup bonded interfaces that use the four rear-panel physical Ethernet ports.

➤ Ruggedness Provides Reliability in Harsh Environments. Operates reliably between –40° and +85°C (–40° to +185°F), and complies with IEEE 1613, IEC 61850-3, and IEC 60255 standards.

➤ Easy-to-Use Interface Streamlines Device Management. The intuitive SEL-2488 HTTPS device webpage with SkyView® simplifies configuration, management, and troubleshooting.

Functional Overview

The SEL-2488 raises the bar for satellite-synchronized clocks by providing higher levels of accuracy, flexibility, dependability, and ease of use, all while providing advanced capabilities that make it especially well suited for critical infrastructure applications.

Features ➤ Average accuracy of ±40 ns to UTC, peak accuracy of ±100 ns to UTC for demodulated IRIG-B and pulse outputs

➤ Time sources used: GPS, GLONASS for satellite signal verification

➤ Typical NTP time-stamp accuracy <100 µs

➤ Peak PTP time-stamp accuracy of ±100 ns to UTC

➤ Peak accuracy of ±1 µs to UTC for modulated IRIG-B

➤ Standard TCXO holdover oscillator with 36 µs average timing error after 24 hours at constant tem-perature (315 µs, ±1ºC)

➤ Optional OCXO and DOCXO holdover oscillators with average accuracies of 5 µs and 2.5 µs after 24 hours, respectively

➤ Eight rear BNC ports for demodulated IRIG-B, PPS, or kPPS, and as many as four ports for modu-lated IRIG-B

➤ Six optional SMA frequency output ports with one 10 MHz square-wave output and five 10 MHz sine-wave outputs

➤ Four Ethernet ports can serve NTPv4 and PTP (optional) to four independent networks

➤ One Form A solid-state contact output can provide a single contact closure or a repeating contact clo-sure of configurable closure duration and period

➤ One Form C mechanical alarm contact notifies users of a major or minor event

➤ One standard power supply: 24–48 Vdc or 125–250 Vdc or Vac, optional second supply

Figure 1 Functional Diagram

Status and Port Activity LEDs Multi-Information LCD Screen

Time Status LEDs Local

Management Port (ETH F)

Standard Power Supply

Optional Redundant, Hot-Swappable Power Supply

Grounding Lug

Alarm and Timer Contacts Pin Hole Reset

Eight Configurable Time-Code Output

BNC Ports

Four Standard Ethernet Ports

Optional 10 MHz Square-Wave

SMA Output Port

Five Optional 10 MHz Sine-Wave SMA Output Ports

DB-9

Time-Code Output Port

IRIG-B

BNC

Input Port

Antenna TNC Input

Port

➤ Satellite signal verification with SEL-9524B GPS/GLONASS GNSS Antenna

➤ LCD multi-information display plus LEDs for status

➤ HTTPS Web interface with SkyView, support for DHCP, LDAP, syslog, SNMP read and traps, and ACSELERATOR QuickSet® SEL-5030 Software

➤ Standard SEL 10-year warranty

Applications Time Synchronization of Substations The SEL-2488 has eight BNC ports, which can be con-figured for demodulated IRIG-B, time pulse, or modu-lated IRIG-B (as many as four ports). Demodulated IRIG-B provides time output for protection applications, synchronizing relays, phasor measurement units, and other IEDs to within ±40 ns average accuracy to UTC.

Time synchronization is also essential for sequence of events recording, disturbance recording, and power sys-tem fault location.

Modulated IRIG-B can be configured for as many as four BNC outputs for synchronizing legacy devices. The DB-9 port can be used with SEL-2812 Fiber-Optic Transceivers With IRIG-B or SEL-3405 High-Accuracy IRIG-B Fiber-Optic Transceivers to send IRIG-B over long distances via a fiber-optic cable.

With the purchase of the frequency outputs hardware option, the SEL-2488 provides six 10 MHz outputs.

Using both 10 MHz and PPS outputs, the SEL-2488 ensures reliable time synchronization for Land Mobile Radio (LMR) systems, such as simulcast radio systems used in 911 emergency response.

Ethernet ports can use NTP to distribute time to devices on the substation local-area network (LAN), such as servers, computers, and other devices that set their time through NTP or the Simple Network Time Protocol (SNTP). The SEL-2488 can serve NTP to four indepen-dent networks. The SEL-2488 can act as a stratum 1 time server with typical client synchronization accuracy to the SEL-2488 NTP server on a LAN of 0.5–2 ms. With sys-log support, all SEL-2488 event information, including diagnostic and status events, is available over Ethernet in a standardized format.

The SEL-2488 Ethernet ports support hardware time stamping, enabling support of the IEEE 1588 Precision Time Protocol (PTP) for advanced digital secondary applications, such as Sampled Values, with purchase of a firmware upgrade.

GNSS Vulnerability Mitigation If GNSS time signals become unavailable as a result of solar flares, jamming, or an antenna failure, the SEL-2488 switches into holdover to maintain accurate time by using its high-stability, internal oscillator. The standard TCXO oscillator maintains a timing accuracy within 36 µs after 24 hours at constant temperature and 315 µs at ±1ºC. The optional OCXO and DOCXO oscillators maintain a tim-ing accuracy of 5 µs and 2.5 µs after 24 hours, respectively.

In the case of a GPS spoofing attack, in which a satellite system receiver locks to a counterfeit signal, the SEL-2488 and SEL-9524B GPS/GLONASS GNSS Antenna use sig-nals from the GLONASS Satellite constellation to vali-date GPS signals and identify mismatches in timing information caused by these attacks.

Figure 2 Functional Diagram for Utility Substation Time Synchronization

Figure 3 SEL-2488 Satellite Signal Verification

IRIG-B

NTP

Ethernet Switch

IRIG Enabled Devices

PTP-Enabled IEDs

IED

IED

IED

NTP

IRIG Enabled Devices

IRIG Enabled Devices

GPS GLONASS

SEL-9524B

GNSS Antenna

Cable Delay Compensation The SEL-2488 preserves accuracy by providing time-delay compensation for antenna cables and output cables on a per-port basis with demodulated IRIG-B and pulse outputs.

The cable delay compensation of the SEL-2488 ensures high-accuracy time distribution in large facilities with dispersed IEDs or in installations where antennas must be mounted high on towers. The SEL-2488 supports as long as 500 ft of LMR-400 cable for an antenna and as long as 500 ft of RG-58 or LMR-195 for the output cable.

Figure 4 shows an example of a clock with an antenna and two output ports. One output port is configured for 30 ns of cable delay compensation and the other is con-figured for 180 ns.

Configuration HTTPS Device Webpage

The Captive Port feature on the SEL-2488 provides a DHCP server and limited DNS resolver for an easy ini-tial connection to the device webpage for configuration.

Secure access is controlled through X.509 certificates, user-based accounts, LDAP authentication, and complex passwords. The SEL device webpage includes a dashboard

Figure 4 SEL-2488 Cable Delay Compensation

120 ft, 180 ns Delay20 ft, 30 ns Delay

200 ft, 300 ns Delay

Figure 5 SEL-2488 Dashboard With SkyView display of satellite signals for both GPS and GLONASS satellites. Bar charts indicate signal strengths, and the SkyView displays the present satellite overhead posi-tions, useful information for troubleshooting potential signal and antenna installation issues.

QuickSet QuickSet can be used for secure configuration of the SEL-2488. QuickSet is an easy-to-use, powerful tool with template design capabilities for consistent configu-ration of settings across multiple devices.

Diagrams and Dimensions

Figure 6 SEL-2488 Front and Rear Panels

Figure 7 Dimensions for Rack- and Panel-Mount Models

ETH F

100 Mbps

LAMP

TEST

ENABLED

ALARM PWR B

PWR A

SEL-2488 SATELLITE SYNCHRONIZED NETWORK CLOCK

LNK/ACT

SATELLITE

LOCK

TIME

QUALITY

ANTENNA

PTP

STATUS

OUT 1

NTP

GND

C8

P

R

O W E

B

P

R

A

O W E

ETH 1 ETH 2 ETH 3 ETH 4

COM 1

C1 C2 C3 C4 C5

C7

ANT

IRIG-B

IN

OUT1 ALARM

C6

TO5 TO6 TO7 TO8

TO1 TO2 TO3 TO4

SEL–9330–A

POWER SUPPLY

PWR

IN 125-250V

MAX 700mA

120-240V 50/60Hz, 45W

OUT 12.5V

MAX 2.9A, 36W

GND

+/H – /N

GND

C8

P

R

O W E

B

P

R

A

O W E

ETH 1 ETH 2 ETH 3 ETH 4

COM 1

C7

ANT

OUT1 ALARM

C1 C2 C3 C4 C5

IRIG-B

IN

C6

TO5 TO6 TO7 TO8

TO1 TO2 TO3 TO4

SEL–9330–C

POWER SUPPLY

PWR

IN 24–48V

MAX 1.7A, 42W

OUT 12.5V

MAX 2.9A, 36W

GND

GND

C8

P

R

B

O W E

P

R

O W E

AETH 1 ETH 2 ETH 3 ETH 4C1 C2 C3 C4 C5

COM 1

C7

ANT

IRIG-B

IN

OUT1 ALARM

C6

TO5 TO6 TO7 TO8

TO1 TO2 TO3 TO4

10 MHz

F1 F2 F3 F4 F5 F6 SEL–9330–C

POWER SUPPLY

PWR

IN 24–48V

MAX 1.7A, 42W

MAX 2.9A, 36W

OUT 12.5V

GND

SEL–9330–A

POWER SUPPLY

PWR

IN 125-250V

MAX 700mA

120-240V 50/60Hz, 45W

MAX 2.9A, 36W

OUT 12.5V

GND

+/H – /N i7114j in (mm)

LEGEND

TOP

18.31 [465.1]

19.00 [482.6]

9.79 [248.6]

1.25 [31.8]1.72

[43.7]

.17 [4.3]

PANEL CUTOUT

17.63 [447.8]

1.80 [45.7]

1.25 [31.8]

18.31 [465.1]

4X Ø.25 [Ø6.4]

3.15 [80.0]

19.80 [502.9]

4X #10-32

STUD

9.80 [248.8]

.73 [18.5]

TOP

FRONT SIDE

RACK-MOUNT CHASSIS PANEL MOUNT CHASSIS

FRONT

i9327b

Specifications

Compliance Designed and manufactured under an ISO 9001 certified quality management system

United States and Canada FCC 47 CFR Pt 15B, Class A Industry Canada ICES-001 (A) / NMB-001 (A) UL Listed to U.S. and Canadian safety standards (File 220228; NRAQ/

NRAQ7)

Note: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area may be likely to cause harmful interference in which case the user will be required to correct the interference at his own expense. Any changes or modifications not expressly approved by the manufacturer can void the user's authority to operate the equipment.

European Union CE Mark RoHS Compliant

United Kingdom UKCA Mark RoHS Compliant

Australia and New Zealand RCM Mark

General Receiver

Satellite Tracking: GPS L1, C/A Code (1575.42 MHz), GLONASS L1 (1602 MHz), track as many as 16 satellites for each constellation

Acquisition Times

Warm Start: 240 s (with saved almanac data)

Cold Start: 240 s + UTC compensation time (as many as 12.5 minutes)

Clock Accuracy (to UTC) 1 PPS: ±40 ns average, ±100 ns peak

Demodulated IRIG-B: ±40 ns average, ±100 ns peak

Modulated IRIG-B: ±1 µs peak

PTP Time-Stamp Accuracy: ±100 ns peak

NTP Time-Stamp Accuracy (Typical): <100 µs

Typical client synchronization accuracy to the SEL-2488 NTP server on a LAN is 0.5–2 ms. Actual accuracy depends on network conditions.

Frequency Outputs: <1E-10 measured over 100 s <1E-12 measured over 24 hr

Holdover Timing Accuracy After 24 Hours (Typical)

TCXO: 36 µs, constant temperature 315 µs, ±1ºC

OCXO: 5 µs

DOCXO: 2.5 μs

Note: Holdover accuracy values assume the device has been in operation for 24 hours or longer prior to holdover.

Holdover Frequency Accuracy After 24 Hours (Typical):

OCXO: 1E-10 Hz/Hz

DOCXO: 5E-11 Hz/Hz

Antenna Requirements 5 V, <80 mA ≥32 dB preamp

Electrical Output Drive Levels Demodulated IRIG-B/PPS

BNC Ports (TO1–TO8): 5 Vdc (TTL), 250 mA max

Modulated IRIG-B BNC Ports (TO1–TO4): 6.2 Vpp nominal

DB-9 Port IRIG-B Output (COM1 Pin 4/Pin 6): 5 Vdc (TTL), 5 mA

Note: Cabling on the DB-9 port shall be no longer than 3 m.

Square-Wave Frequency SMA Port (F1): 10 MHz, 5 Vdc (TTL), 100 mA max

Note: Cable lengths >2 m requires use of LMR-240 or better quality cabling.

Sine-Wave Frequency SMA Ports (F2–F6):

10 MHz, +13 dBm nominal, ±2 dB into 50 Ω

Subharmonics: <–40 dBc

Spurious: <–70 dBc

Operating Environment Pollution Degree: 2

Overvoltage Category: II

Insulation Class: I

Dimensions 1U Rack Mount

Height: 43.7 mm (1.72 in)

Depth: 248.6 mm (9.79 in)

Width: 482.5 mm (19.0 in)

1U Panel Mount:

Height: 80.0 mm (3.15 in)

Depth: 248.8 mm (9.80 in)

Width: 502.9 mm (19.80 in)

Weight

2.8 kg (6.2 lb)

Warranty 10 years

Network Management HTTPS Web User Interface ACSELERATOR QuickSet SEL-5030 Software Settings Import/Export

User-Based Accounts Maximum Local Accounts: 256

User Roles: Administrator, Engineer, User Manager, Monitor

Password Length: 1–72 characters

Password Set: All printable ASCII characters

Note: If complex passwords are enabled, the password must have at least 8 characters with at least one digit, uppercase, lowercase, and special character.

Syslog Storage for 60,000 local syslog messages

Support for three remote syslog destinations

Simple Network Management Protocol (SNMP) Monitors diagnostics through SNMP v2c and v3 read operations

Sends notifications using SNMP v2c traps

Support for as many as three trap servers

Network Time Protocol (NTP) Implements NTPv4 Server, Broadcast, and Multicast formats

Precision Time Protocol (PTP) Implements the following IEEE 1588-2008 profiles:

Default UDP (Annex D and J) Default 802.3 (Annex F and J)

IEEE C37.238-2011

IEEE C37.238-2017

IEC/IEEE 61850-9-3:2016

Parallel Redundancy Protocol (PRP) Implements IEC 62439-3:2016

Supports as many as two Doubly Attached Node implementing PRP (DANP) interfaces for separate PRP networks using the following physical Ethernet port combinations:

ETH 1 and ETH 2 ETH 3 and ETH 4

Supports PTP as a Doubly Attached Clock (DAC) on ports where PRP is enabled.

Active-Backup Port Bonding Implements Active-Backup port bonding (also known Failover) using the following physical Ethernet port combinations:

ETH 1 and ETH 2 ETH 3 and ETH 4

Communications Ports Ethernet Ports

Ports: 4 rear, 1 front

Data Rate: 10 or 100 Mbps

Front Connector: RJ45 Female

Rear Connectors: RJ45 Female or LC Fiber (single-mode or multimode)

Standard: IEEE 802.3

Fiber-Optic Ports

Multimode Option (to 2 km)

Maximum TX Power: –14 dBm

Minimum TX Power: –20 dBm

RX Sensitivity: –31 dBm

System Gain: 11 dB

Source: LED

Wavelength: 1310 nm

Connector Type: LC (IEC 61754-20)

Single-Mode Option (to 15 km)

Maximum TX Power: –8 dBm

Minimum TX Power: –15 dBm

RX Sensitivity: –28 dBm

System Gain: 13 dB

Source: Laser

Wavelength: 1310 nm

Connector Type: LC (IEC 61754-20)

Alarm Output Pilot Duty Rating

(Per UL 508): B300, R300

Power Supply Burden: <0.5 W max

Rated Operational Voltage: 24–250 Vdc

Contact Protection: 270 Vdc, MOV protected

Continuous Carry: 2 A

Pickup Time: ≤8 ms typical

Dropout Time: ≤8 ms typical

Timer Contact Power Supply Burden: <0.5 W max

Rated Operational Voltage: 12–250 Vdc

Contact Protection: 330 Vdc (250 Vac), MOV protected

Continuous Carry: 100 mA

Off Resistance: 5 MΩ

Minimum Voltage: 12 Vdc

Timing Accuracy (Closing): ±1 µs (applies only to dc voltages)

Terminal Connections Warning: When using stranded wire, use crimp ferrules to safely capture all wire strands before assembling and attaching the plug or ground wire.

Power Supply Compression Screw Terminals

Part Number: Use SEL P/N 420-0219 (provided)

Tightening Torque: 0.5–0.6 Nm (4–5 in-lb)

Insulation Ratings: 300 V, 90°C (194°F), minimum

Wire Material: Copper

Size: 12–18 AWG (4.00–0.75 mm2)

Alarm and Timing Contact Compression Screw Terminal

Part Number: Use SEL P/N 420-0071 (provided)

Tightening Torque: 0.5–0.6 Nm (4–5 in-lb)

Insulation Ratings: 300 V, 90°C (194°F), minimum

Wire Material: Copper

Size: 16–22 AWG (1.50–0.34 mm2)

Ground Screw

Part Number: #6 crimp ring terminal is recommended

Tightening Torque: 0.90–1.36 Nm (8–12 in-lb)

Insulation Ratings: 300 V, 90°C (194°F), minimum

Wire Material: Copper

Size: 12–18 AWG (4.00–0.75 mm2)

Length: <3.0 m (<9.8 ft)

Power Supply 125—250 Volt Power Supply (SEL-9330-A)

Rated Supply Voltage: 125–250 Vdc 120–240 Vac, 50/60 Hz

Input Voltage Range: 88–300 Vdc or 85–264 Vac

Burden: AC: <75 VA, 700 mA

DC: <45 W

Input Voltage Interruptions: 50 ms @ 125 Vac/Vdc 100 ms @ 250 Vac/Vdc

Peak Inrush: 8 A

Internal Fuse Rating: 2.5 A, 250 Vdc/300 Vac time-lag T, 250 Vac/1500 A break rating

Note: Fuses are not user-serviceable.

24—48 Volt Power Supply (SEL-9330-C)

Rated Supply Voltage: 24–48 Vdc (polarized)

Input Voltage Range: 19.2–60.0 Vdc

Burden: <42W, 1.7 A

Input Voltage Interruptions: 50 ms @ 48 Vdc 10 ms @ 24 Vdc

Peak Inrush: 18 A

Internal Fuse Rating: 4.0 A, 150 Vdc time-lag T, 250 Vac/1500 A break rating

Note: Fuses are not user-serviceable.

Recommended External Overcurrent Protection

Breaker Type: Standard

Breaker Rating: 15 A at 250 Vdc

Current Breaking Capacity: 10 kA

Grounded Neutral Systems: Device in series with the HOT or energized conductor

DC and Isolated Systems: Device in series with both conductors

Environmental Temperature

Operating: –40° to +85°C (–40° to +185°F)

Note: UL Ambient +40°C (+104°F).

See Safety Information for additional details.

Non-Operating (Storage): –40° to +85°C (–40° to +185°F)

Relative Humidity 5% to 95% noncondensing

Altitude 2000 m

Type Tests Communication Product Testing

Communications for Substation Equipment:

IEEE 1613-2009

Class 2

Communications Networks and Systems for Power Utility Automation—Pt 3:

General Requirements: IEC 61850-3:2013

Electromagnetic Compatibility General Measuring Relays and

Protection Equipment: IEC 60255-26:2013

Electromagnetic Compatibility Emissions

IEC 60255-25:2000

IEC 60255-26:2013

CISPR 11:2009 + A1:2010

CISPR 22:2008

Canada ICES-001 (A) / NMB-001 (A) 47 CFR Part 15.107 and 109

Severity Level: Class A

Electromagnetic Compatibility Immunity Conducted RF Immunity: IEC 60255-26:2013

IEC 61000-4-6:2014

Severity Level: 10 Vrms

Radiated RF Immunity: IEC 60255-26:2013

IEC 61850-3:2013

IEC 61000-4-3:2005 + A1:2008

+ A2:2010 Severity Level: 10 V/m

IEEE C37.90.2-2004

IEEE 1613-2009

Severity Level: 20 V/m

Electrostatic Discharge Immunity:

IEC 60255-26:2013

IEC 61850-3:2013

IEC 61000-4-2:2008

Severity Level: ±2, 4, 6, 8 kV contact;

±2, 4, 8, 15 kV air

IEEE 1613-2009

IEEE C37.90.3-2001

Severity Level: ±2, 4, 8 kV contact;

±4, 8, 15 kV air

IEEE Surge Withstand Capability:

IEC 60255-22-1:2007

Severity Level: ±2.5 kV peak common mode, ±1.0 kV peak differential mode

IEEE C37.90.1-2005

IEEE 1613-2023

IEEE C37.90.1-2012 + ERTA:2–13

Severity Level: ±2.5 kV, 1 MHz oscillatory; ±4 kV, 5.0 kHz fast transient

IEC Fast Transient/Burst Immunity:

IEC 60255-26:2013

IEC 61850-3:2013

IEC 61000-4-4:2011

Severity Level: ±4 kV, 5 kHz; ±2 kV, 5 kHz on communications ports

IEC SDOW Immunity: IEC 60255-26:2013

IEC 61850-3:2013

IEC 61000-4-18:2006 + A1:2010

Severity Level: ±2.5 kV; ±1.0 kV on communications ports

IEC Surge Immunity: IEC 60255-26:2013

IEC 61850-3:2013

IEC 61000-4-5:2005

Severity Level: ±0.5 kV, 1 kV line-to-line, ±0.5 kV, 2 kV line-to-earth;

±0.5 kV, 1 kV, 2 kV line-to-earth on communications ports

Conducted Common-Mode Immunity:

IEC 61850-3:2013

IEC 61000-4-16:2016

Severity Level: 300 Vac for 60 s;

30 Vac for 1 s

Power Frequency Magnetic Field Immunity:

IEC 61000-4-8:2009

Severity Level: 1000 A/m for 3 s, 100 A/m for 1 min

Pulse Magnetic Field Immunity:

IEC 61000-4-9:2001

Severity Level: 1000 A/m

Damped Oscillatory Magnetic Field Immunity:

IEC 61000-4-10:2001

Severity Level: 100 A/m (at 1 kHz and 1

MHz)

Voltage Dips and Interruptions Immunity:

IEC 60255-26:2013

IEC 61850-3:2013

IEC 61000-4-11:2004 + A1:2017

IEC 61000-4-17:2002 + A1:2001

+ A2:2008

IEC 61000-4-29:2000

Environmental Cold: IEC 60068-2-1:2007

Severity Level: 16 hours at –40°C

Damp Heat, Cyclic: IEC 60068-2-30:2005 Severity Level: 25° to 55°C, 6 cycles, relative humidity (RH): 95%

Dry Heat: IEC 60068-2-2:2007 Severity Level: 16 hours at +85°C

Change of Temperature: IEC 60068-2-14:2009 Severity Level: 20°C and 60% RH to 90°C and 16% RH to –45°C and 36%

RH

Damp Heat Steady State: IEC 60068-2-78:2001 Severity Level: 40°C, RH: 93%, 10 days

Free Fall: IEEE 1613-2009 Severity Level: 100 mm

Vibration: IEC 60255-21-1:1988 Severity Level:

Class 2 Endurance Class 2 Response

Shock & Bump: IEC 60255-21-2:1998 Severity Level:

Class 1 Shock Withstand Class 1 Bump Class 2 Shock Response

Seismic: IEC 60255-21-3:1993 Severity Level:

Class 2 (Quake Response)

Safety Measuring Relays and

Protection Equipment: IEC 60255-27:2013

Protection IP Code: IEC 60529:1989 + A1:1999 + A2:2013 IP Code: IP3X for category 2 equipment

Technical Support We appreciate your interest in SEL products and services. If you have questions or comments, please contact us at:

Schweitzer Engineering Laboratories, Inc.

2350 NE Hopkins Court Pullman, WA 99163-5603 U.S.A.

Tel: +1.509.338.3838 Fax: +1.509.332.7990 Internet: selinc.com/support Email: info@selinc.com

Insulation Coordination: IEC 60255-27:2013

IEEE C37.90-2005

Dielectric (HiPot) Severity Level:

Power Supply: ±3.6 kVdc Timer/Alarm Contacts: ±3.6 kVdc IRIG-B Input: ±2.25 kVdc Ethernet Ports: ±2.25 kVdc

Impulse Severity Level:

5 J; ±5 kV, 1.2/50 μs

Electrical Equipment for Measurement, Control, and Laboratory Use:

IEC 61010-1:2010/AMD1:2016/

COR:2019

UL 61010-1:2019,

C22.2 No. 61010-1:12/A1:18

IEC 61010-2-201:2017

UL 61010-2-201:2018,

C22.2 No. 61010-2-201:18 https://selinc.com/support mailto: info@selinc.com

Notes

SEL-2488 Data Sheet Date Code 20250228

© 2014—2025 by Schweitzer Engineering Laboratories, Inc.

Content subject to change without notice.

Unless otherwise agreed in writing, all SEL product sales are subject to SEL’s terms and conditions located here: https://selinc.com/company/termsandconditions/.

*PDS2488-01*

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