Chicago Electric 92472 Specifications download pdf (Page 26)

Tel: +1.847.362.8304 | Fax: +1.847.362.8396 | www.eosmfg.com

E. O. SCHWEITZER MANUFACTURING, A DIVISION OF SEL

UNDERGROUND FAULT INDICATORS

AR-URD

—

Underground AutoRANGER

™

Key Features

System-Wide Adaptability

The Underground AutoRANGER’s autoconfiguration features decrease the

need for crew training, selection analysis, and inventory, resulting in fewer

application errors.

Minimal Maintenance

The AutoRANGER’s ability to adjust for load fluctuations results in a

decreased need for field service. Choose a target-only (no LED) display

option to eliminate the need for a battery. BEACON

™

LED models have a

15-plus-year product life

—

minimize trips to the field to replace batteries.

Configuration Choices Optimize Performance

Ensure the best fault-indicating solution for your underground application

by choosing from a wide variety of single- and three-phase display

options, including remote displays that eliminate the need to open the

enclosure to check the fault indicator’s status.

Autoadjusting Trip-Level Selection

Automatic trip-level selection based on sampled load current

makes the AR-URD suitable for applications with fault currents ranging

from as low as 50 A to greater than 1200 A. This feature simplifies ordering

and inventory and reduces maintenance and application errors.

Line-Powered Functionality

Energy required to power the microprocessor comes from monitored

load current rather than a battery, decreasing maintenance and cost of

ownership.

Dynamic Trip-Response Times

By monitoring current, the AR-URD automatically adjusts its trip-response

time to better coordinate with upstream protection.

Current-Activated Timed Reset

Each AR-URD derives a normalization current as a function of measured

circuit load. The AR-URD uses the normalization current to distinguish

circuit restoration from backfeed current; it is this threshold that the

AR-URD must detect before initiating the reset timer (0, 2, 4, or 8 hours).

Choose one low-maintenance fault indicator

for your underground applications.

Underground AutoRANGER application.

Speciﬁcations

Fault-Sensing Range 50 to 1200 A

Voltage Range Equal to voltage class of shielded

underground cable

Minimum Operating Current 3 A

Current-Activated Timed Reset 0, 2, 4, or 8 hours

Battery (for BEACON LED

display only)

3.6 V high-capacity 2.4 Ah lithium

battery with a 20-year shelf life

Dynamic Trip-Response Time Function of trip level (see graph above)

Inrush Restraint Response Time 5 cycles

Temperature Range —40° to +85°C

0.01

0.1

100

100001000 10 100

F a ult Current (Amps)

Response Time (Cycles)

The Underground AutoRANGER’s dynamic trip-response time improves

coordination with upstream protection, maximizing reliable performance.

See page 20 for application with

the RadioRANGER

™

Wireless Fault

Indication System.

1 2 ... 21 22 23 24 25 26 27 28 29 30 31 ... 47 48

Comments to this Manuals

No comments

Chicago Electric 92472 Specifications Page 26

Comments to this Manuals

Related products and manuals for Power impact wrenches Chicago Electric 92472