Littelfuse PGR-8800 User Manual
Protection Relays & Controls
D
D
D
Local
Circuit Breaker
Arc-Flash Monitoring
PGR-8800 SERIES (D1000)
Arc-Flash Relay
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.
Simplified Circuit Diagram
5-A-SECONDARY PHASE CT’s
A
B
C
PGR-8800
L1
L2
For detailed wiring diagram, see adjacent page.
(Arc-Flash Protection Relay)
24 Vdc Battery
Backup
(Optional)
D
PGA-1100
(Diode Logic Unit)
(Optional)
Trip
C
Ordering Information
ORDERING NUMBER COMMUNICATIONS
(Recommended)
PGA-LS10
(Point Sensor)
PGA-LS20/
PGA-LS25/
PGA-LS30
(Fiber-Optic Sensor)
Optical Sensors
The PGR-8800 accepts both PGA-LS10 and PGA-LS20/PGALS25/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
A
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
B
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).
PGR-8800-00 (UL, CE, C-tick) Multi-unit linking, Modbus® RTU
ACCESSORIES REQUIREMENT
PGA-LS10 (A1000) Required*
PGA-LS20 (A2000)/
PGA-LS25 (A2000.0020)
PGA-LS30 (A2000.0030)
PGA-1100 (D1100) Optional
Required*
Current Transformer Recommended
*At least one sensor is required. Ho wever, the exact number of sensors for prope r cover age
depen ds on the applica tion.
© 2013 Littelfuse Protection Relays & Controls
Littelfuse.com/ArcFlash
Based on Manual Rev 3-A-112913
Rev: 4-F-012214
Protection Relays & Controls
Arc-Flash Monitoring
PGR-8800 SERIES (D1000)
Arc-Flash Relay
Features & Benefits
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 sensitivit y 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 sof tware installation
Built-in sensor Can be used in single-sensor systems, as a seventh sensor, and for calibration
Universal power supply/Battery backup
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
100-240 Vac, 14-4 8 Vdc, or 110-250 Vdc supply accepted. Ability to charge and run off an external, user-supplied
24 Vdc battery.
Wiring Diagram
Accessories
A
B
C
D
PGA-LS10 (A1000) 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 (A2000)/PGA-LS25 (A2000.0020)/PGALS30(A2000.0030) 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 (D1100) 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 20mm(.79”) D 70mm(2.76”)
Current Transformers
Eliminate nuisance arc-flash trips and use for
overcurrent protection.
31 36 39 37 45 46 47 48 49 50 51 52 53 54 55 56 57 59 60 38
.....................
CONTROL POWER
and BATTERY
ARC-FLASH RELAY
PGR-8800 SERIES
1
4
5 8
........
PGA-LS10
PGA-LS20
PGA-LS25
or
PGA-LS30
OPTICAL
SENSOR
9 12
........
PGA-LS10
PGA-LS20
PGA-LS25
PGA-LS30
OPTICAL
SENSOR
........
PGA-LS10
PGA-LS20
PGA-LS25
or
PGA-LS30
OPTICAL
SENSOR
+
LINK
or
ARC-FLASH RELAY
PGR-8800
(optional)
–
13 16
........
PGA-LS10
PGA-LS20
PGA-LS25
or
PGA-LS30
OPTICAL
SENSOR
.............
DIGITAL INPUTS
17 20
........
PGA-LS10
PGA-LS20
PGA-LS25
or
PGA-LS30
OPTICAL
SENSOR
ARC-FLASH RELAY
PGR-8800
(optional)
ONLINE
21 24
........
PGA-LS10
PGA-LS20
PGA-LS25
or
PGA-LS30
OPTICAL
SENSOR
ARC-FLASH RELAY
PGR-8800
(optional)
STATUS STATUS STATUS
25 26 27 28 29 30
PHASE CT
(recommended)
DIODE LOGIC
UNIT
PGA-1100
PHASE CT
(recommended)
(optional)
TRIP COILTRIPPEDSERVICE
PHASE CT
(recommended)
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 (5.2”); W 200 mm (7.9”);
D 54 mm (2.2”)
Optical Trip Settings 9-25 klux, 800 μs-20 s
Current Trip Setting (A) Programmable
Indication Contact Mode Fail-safe
Trip Coil Voltage
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 DIN (with D0050 adapter clips), Surface
(1)
24-300 Vdc, 24-300 Vac
NOTE (1) - Contact Littelfuse for trip coil voltages higher than 300 Vdc/Vac.
Littelfuse reserves the righ t to make produ ct changes, withou t notice. Mat erial in this document is as accura te as known at the time of p ublication. V isit Littelfuse. com for the most up-to-da te information.
© 2013 Littelfuse Protection Relays & Controls
Littelfuse.com/ArcFlash
Based on Manual Rev 3-A-112913
Rev: 4-F-012214
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