PGR-8800 LITTELFUSE | Alldatasheet
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Technical content
Protection Relays and Controls © 2016 Littelfuse Protection Relays & Controls Littelfuse.com/ArcFlash Rev: 4-I-050516 Based on Manual Rev 3-C-040816
Description
The PGR-8800 is a microprocessor-based relay that limits arc-fault damage by detecting the light from an arc flash and rapidly tripping. Phase-current-transformer inputs are provided for current-constrained arc-flash protection and, when so equipped, a programmable definite-time overcurrent function can be enabled. An optical sensor on the PGR-8800 and adjustable trip level reduce the chance of nuisance tripping by setting a threshold for ambient light. Sensors, inputs, and connections are monitored to ensure fail-safe operation. A secondary solid-state trip circuit provides a redundant trip path. A USB port is used for configuration and access to event logs and graphs. Optical Sensors The PGR-8800 accepts both PGA-LS10 and PGA-LS20/ PGA-LS30 optical sensors, designed to collect light over a wide angle and with high sensitivity. For fast fault location, front-panel and sensor LED’s indicate sensor health and which sensor detected an arc fault. Sensor Placement The PGR-8800 Arc-Flash Relay and sensors are easily installed in retrofit projects and new switchgear with little or no re-configuration. Even elaborate systems with multiple power sources take minutes to configure using the relay’s built-in USB interface software. Generally, it is recommended to mount 1 or 2 sensors per cubicle to cover all horizontal and vertical bus bars, breaker compartments, drawers, and anywhere that there is potential for an arc-fault. Threading a fiber-optic sensor through the cabinets and in areas where point-sensor coverage is uncertain results in complete coverage and an added level of redundancy. Even if policy is to only work on de-energized systems, all maintenance areas should be monitored to prevent potential damage and additional cost. At least one sensor should have visibility of an arc fault if a person blocks the other sensor(s). Simplified Circuit Diagram PGA-LS10 (Point Sensor) PGA-LS20/ PGA-LS30 (Fiber-Optic Sensor) PGA-1100 (Diode Logic Unit) (Optional)
24 Vdc Battery
(Optional) (Recommended) (Arc-Flash Protection Relay) PGR-8800 Trip 5-A-SECONDARY PHASE CT’s A B C A B PGR-8800 SERIES (D1000) Arc-Flash Relay C D *At least one sensor is required. However, the exact number of sensors for proper coverage depends on the application. D D D Local Circuit Breaker For detailed wiring diagram, see adjacent page.
Ordering Information
ORDERING NUMBER DESCRIPTION PGR-8800-00 (UL, CE, CSA, RCM) Arc-Flash Relay PGR-8800-00-CC (UL, CE, CSA, RCM) Arc-Flash Relay, Conformally Coated ACCESSORIES REQUIREMENT PGA-LS10 Required* PGA-LS20, PGA-LS30 Required* PGA-1100 Optional Current Transformer Recommended Arc-Flash Monitoring
Protection Relays and Controls © 2016 Littelfuse Protection Relays & Controls Littelfuse.com/ArcFlash Wiring Diagram FEATURES BENEFITS Arc-Flash trip time <1 ms Limits arc-flash damage and risk of injury Multiple sensors (up to 24) Single module can monitor 6 sensors. Up to 4 PGR-8800 units can be linked into one system Fail-safe system Continuous monitoring of optical sensors and inputs ensures protection Redundant trip circuit Solid-state backup arc-detection circuit adds a second layer of safety Adjustable light sensitivity Allows for operation in bright environments and maximum sensitivity in dark environments LED indication (on unit and each sensor) 18 LEDs provide at-a glance status for module and I/O state Current detection Phase-CT inputs provide overcurrent protection and prevent nuisance trips Optical detection Point and fiber-optic sensors provide wide detection area with sensor health trip indication Digital inputs (6) Two each: remote trip, inhibit, and reset inputs Service mode Allows for system test without tripping Trip coil contact Solid-state 24-300 Vdc/24-300 Vac IGBT Indication contacts Form C and status outputs USB interface Data logging and configuration software uses a USB interface with no drivers or software installation Built-in sensor Can be used in single-sensor systems, as a seventh sensor, and for calibration Universal power supply/Battery backup 100-240 Vac, 14-48 Vdc, or 110-250 Vdc supply accepted. Ability to charge and run off an external, user-supplied 24 Vdc battery. Data logging On-board event recorder helps with system diagnostics Modbus Remotely view measured values, event records & reset trips Upstream Tripping Ability to trip upstream device if the local breaker fails to clear the fault Features & Benefits PGR-8800 SERIES (D1000) 31 36 39 37 45 46 47 48 49 50 51 52 53 54 55 56 57 59 60 38 25 26 27 28 29 30 STATUS STATUS STATUS TRIP COILTRIPPEDSERVICE LINK ONLINE + – CONTROL POWER and BATTERY DIGITAL INPUTS ARC-FLASH RELA Y PGR-8800 SERIES ARC-FLASH RELA Y PGR-8800 (optional) DIODE LOGIC UNIT PGA-1100 (optional) ARC-FLASH RELA Y PGR-8800 (optional) ARC-FLASH RELA Y PGR-8800 (optional) PHASE CT (recommended) PHASE CT (recommended) PHASE CT (recommended) PGA-LS10 PGA-LS20 or PGA-LS30 OPTICAL SENSOR PGA-LS10 PGA-LS20 or PGA-LS30 OPTICAL SENSOR PGA-LS10 PGA-LS20 or PGA-LS30 OPTICAL SENSOR PGA-LS10 PGA-LS20 or PGA-LS30 OPTICAL SENSOR PGA-LS10 PGA-LS20 or PGA-LS30 OPTICAL SENSOR PGA-LS10 PGA-LS20 or PGA-LS30 OPTICAL SENSOR Littelfuse reserves the right to make product changes, without notice. Material in this document is as accurate as known at the time of publication. Visit Littelfuse.com for the most up-to-date information. NOTE (1) - Contact Littelfuse for trip coil voltages higher than 300 Vdc/Vac. Specifications IEEE Device Numbers Overcurrent (50), Arc Flash (AFD) Input Voltage 100-240 Vac, 14-48 Vdc, and 110-250 Vdc Dimensions H 130 mm (5.1”); W 200 mm (7.9”); D 54 mm (2.1”) Optical Trip Settings 9-25 klux, 800 μs-20 s Current Trip Setting (A) Programmable Indication Contact Mode Fail-safe Trip Coil Voltage(1) 24-300 Vdc, 24-300 Vac Trip Coil Contact Mode Selectable fail-safe or non-fail-safe Redundant Trip Circuit Standard feature Input Monitoring Standard feature USB Interface Standard feature Trip, Reset, Service Buttons Standard feature Expandable System Link up to 4 PGR-8800 units Warranty 5 years Mounting Surface, DIN (with D0050 adapter clips) Approvals UL, CE, CSA, RCM, FCC, DNV type approval, ABS type approval PGA-LS10 Point Sensor Line-of-sight light sensor detects an arc as small as 3 kA within a 2-m half-sphere. Sensor health and trip indication. Dimensions: See PGR-8800 Manual PGA-LS20/PGA-LS30 Fiber-Optic Sensor 360° light sensor for tricky installations with many shadows or to run along bus bars. Sensor health and trip indication. Dimensions: See PGR-8800 Manual PGA-1100 Diode Logic Unit This module allows multiple PGR-8800 relays to trip the same breaker, for example an upstream or a tie-breaker. Dimensions: H 80mm (3.15”) W Current T ransformers Eliminate nuisance arc-flash trips and use for overcurrent protection. Accessories A B D C Rev: 4-I-050516 Based on Manual Rev 3-C-040816 Arc-Flash Monitoring