Protection Relays & Controls
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
(Recommended)
Optical Sensors
The PGR-8800 accepts both PGA-LS10 and PGA-LS20/PGA-
LS25/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.
A
B
C
D
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).
PGA-LS10
(Point Sensor)
A
PGR-8800
L1
L2
(Arc-Flash Protection Relay)
Trip
PGA-LS20/
B
PGA-LS25/
PGA-LS30
(Fiber-Optic Sensor)
24 Vdc Battery
Backup
(Optional)
PGA-1100
C
(Diode Logic Unit)
(Optional)
For detailed wiring diagram, see adjacent page.
Ordering Information
ORDERING NUMBER
COMMUNICATIONS
PGR-8800-00 (UL, CE, C-tick)
ACCESSORIES
Multi-unit linking,
Modbus
®
RTU
REQUIREMENT
PGA-LS10 (A1000)
PGA-LS20 (A2000)/
PGA-LS25 (A2000.0020)
PGA-LS30 (A2000.0030)
PGA-1100 (D1100)
Current Transformer
Required*
Required*
Optional
Optional
Local
Circuit Bre
aker
DD
D
*At least one sensor is required. However, the exact number of sensors for proper coverage
depends on the application.
© 2014 Littelfuse Protection Relays & Controls
Littelfuse.com/ArcFlash
Rev: 4-G-032714
Based on Manual Rev 3-A-112913
Protection Relays & Controls
Arc-Flash Monitoring
PGR-8800 SERIES (D1000)
Arc-Flash Relay
Features & Benefits
FEATURES
Arc-Flash trip time <1 ms
Multiple sensors (up to 24)
Fail-safe system
Redundant trip circuit
Adjustable light sensitivity
LED indication (on unit and each sensor)
Current detection
Optical detection
Digital inputs (6)
Service mode
Trip coil contact
Indication contacts
USB interface
Built-in sensor
Universal power supply/Battery backup
Data logging
Modbus
Upstream Tripping
BENEFITS
Limits arc-flash damage and risk of injury
Single module can monitor 6 sensors. Up to 4 PGR-8800 units can be linked into one system
Continuous monitoring of optical sensors and inputs ensures protection
Solid-state backup arc-detection circuit adds a second layer of safety
Allows for operation in bright environments and maximum sensitivity in dark environments
18 LEDs provide at-a glance status for module and I/O state
Phase-CT inputs provide overcurrent protection and prevent nuisance trips
Point and fiber-optic sensors provide wide detection area with sensor health trip indication
Two each: remote trip, inhibit, and reset inputs
Allows for system test without tripping
Solid-state 24-300 Vdc/24-300 Vac IGBT
Form C and status outputs
Data logging and configuration software uses a USB interface with no drivers or software installation
Can be used in single-sensor systems, as a seventh sensor, and for calibration
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.
On-board event recorder helps with system diagnostics
Remotely view measured values, event records & reset trips
Ability to trip upstream device if the local breaker fails to clear the fault
ARC-FLASH RELAY
PGR-8800
ARC-FLASH RELAY
PGR-8800
ARC-FLASH RELAY
PGR-8800
DIODE LOGIC
UNIT
PGA-1100
Wiring Diagram
31
.....................
36
37
+
38
–
(optional)
(optional)
(optional)
(optional)
39
.............
45
46 47 48
49
STATUS
50 51 52
53
STATUS
54 55 56
57
STATUS
59
60
LINK
CONTROL POWER
and BATTERY
DIGITAL INPUTS
ONLINE
SERVICE
TRIPPED
TRIP COIL
ARC-FLASH RELAY
PGR-8800 SERIES
1
........
4
5
........
8
9
........
12
13
16
........
17
20
........
21
24
........
25
26
27
28
29
30
PGA-LS10
PGA-LS20
PGA-LS25
PGA-LS30
OPTICAL
SENSOR
or
PGA-LS10
PGA-LS20
PGA-LS25
PGA-LS30
OPTICAL
SENSOR
or
PGA-LS10
PGA-LS20
PGA-LS25
PGA-LS30
OPTICAL
SENSOR
or
PGA-LS10
PGA-LS20
PGA-LS25
PGA-LS30
OPTICAL
SENSOR
or
PGA-LS10
PGA-LS20
PGA-LS25
PGA-LS30
OPTICAL
SENSOR
or
PGA-LS10
PGA-LS20
PGA-LS25
PGA-LS30
OPTICAL
SENSOR
or
PHASE CT
PHASE CT
PHASE CT
(recommended)
(recommended)
(recommended)
Accessories
A
Specifications
IEEE Device Numbers
Input Voltage
Dimensions
B
C
D
Overcurrent (50), Arc Flash (AFD)
100-240 Vac, 14-48 Vdc, and 110-250 Vdc
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
PGA-LS20 (A2000)/PGA-LS25 (A2000.0020)/PGA-
Current Trip Setting (A)
Programmable
LS30(A2000.0030) Fiber-Optic Sensor
Indication Contact Mode
Fail-safe
360° light sensor for tricky installations with many shadows
Trip Coil Voltage
(1)
24-300 Vdc, 24-300 Vac
or to run along bus bars. Sensor health and trip indication.
Trip Coil Contact Mode
Selectable fail-safe or non-fail-safe
Dimensions: See PGR-8800 Manual
Redundant Trip Circuit
Standard feature
Input Monitoring
Standard feature
PGA-1100 (D1100) Diode Logic Unit
USB Interface
Standard feature
This module allows multiple PGR-8800 relays to trip the
same breaker, for example an upstream or a tie-breaker.
Trip, Reset,
Dimensions:
H
80mm (3.15”)
W
20mm(.79”)
D
70mm(2.76”)
Service Buttons
Standard feature
Expandable System
Link up to 4 PGR-8800 units
Current Transformers
Warranty
5 years
Eliminate nuisance arc-flash trips and use for
Mounting
DIN (with D0050 adapter clips), Surface
overcurrent protection.
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
NOTE (1) - Contact Littelfuse for trip coil voltages higher than 300 Vdc/Vac.
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.
© 2014 Littelfuse Protection Relays & Controls
Littelfuse.com/ArcFlash
Rev: 4-F-012214
Based on Manual Rev 3-A-112913
微控制器 MCU
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
