PGR-8800 Datasheet, PDF (1/2 Pages) Littelfuse – The PGR-8800 is a microprocessor-based

Protection Relays and Controls
Arc-Flash Monitoring
PGR-8800 SERIES (D1000)
Arc-Flash Relay
Simplified Circuit Diagram
5-A-SECONDARY PHASE CT’s (Recommended)
A
D
B
C
PGA-LS10 A
(Point Sensor)
PGR-8800
PGA-LS20/ B
(Arc-Flash Protection Relay)
PGA-LS30
L1
(Fiber-Optic Sensor)
L2
Trip
24 Vdc Battery
Backup
(Optional)
PGA-1100 C
(Diode Logic Unit)
(Optional)
For detailed wiring diagram, see adjacent page.
Ordering Information
ORDERING NUMBER
PGR-8800-00 (UL, CE, CSA, RCM)
PGR-8800-00-CC (UL, CE, CSA, RCM)
ACCESSORIES
PGA-LS10
PGA-LS20, PGA-LS30
PGA-1100
Current Transformer
DESCRIPTION
Arc-Flash Relay
Arc-Flash Relay,
Conformally Coated
REQUIREMENT
Required*
Required*
Optional
Recommended
*At least one sensor is required. However, the exact number of sensors for proper coverage
depends on the application.
© 2016 Littelfuse Protection Relays & Controls
Littelfuse.com/ArcFlash
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).
CLoirccaulit _Breaker
D _DD
Rev: 4-I-050516
Based on Manual Rev 3-C-040816