Advertisement
Quick Links
GE
Grid Solutions
515 Features
Description
Further Assistance
515 BLOCKING AND TEST SYSTEM – INSTRUCTION MANUAL
515 Blocking and Test System
Overview
The GE Multilin 515 Blocking and Test Module has the following features:
•
14 Pole switchbank
•
CT inputs short when current switches are opened
•
Current injection for each phase
•
Ground terminal
•
Ability to visually isolate (open) trip relay output circuits
•
Cover provided
•
Suitable for utility and industrial use
•
515 test plugs available.
The 515 Blocking and Test Module provides an effective means of trip blocking, relay
isolation and testing of GE Multilin relays. By opening the switches and inserting test plugs,
phase and residual currents from the primary CTs can be monitored. Currents can be
injected into the relay from a secondary injection test set during commissioning.
Prior to testing, the trip and auxiliary circuits must first be opened to prevent nuisance
tripping; CTs can then be shorted. Conversely, when the test is complete and the relay put
back into operation, the CT switches should be closed first to ensure normal operation of
the relay, prior to closing the trip and auxiliary circuits.
For product support, contact the information and call center as follows:
GE Grid Solutions
650 Markland Street
Markham, Ontario
Canada L6C 0M1
Worldwide e-mail:
multilin.tech@ge.com
Europe e-mail:
multilin.tech.euro@ge.com
Website:
http://www.gegridsolutions.com/multilin
Instruction Manual
GE Publication Number: 1601-0024-A6
Worldwide telephone: +1 905 927 7070
Europe/Middle East/Africa telephone: +34 94 485 88 54
North America toll-free: 1 800 547 8629
Fax: +1 905 927 5098
Copyright © 2017 GE Multilin Inc.
1
Advertisement
Summary of Contents for GE Multilin 515
-
Page 1: Instruction Manual
515 test plugs available. Description The 515 Blocking and Test Module provides an effective means of trip blocking, relay isolation and testing of GE Multilin relays. By opening the switches and inserting test plugs, phase and residual currents from the primary CTs can be monitored. Currents can be injected into the relay from a secondary injection test set during commissioning. -
Page 2: Operation
CT current from the switchgear. Typical Wiring The typical wiring for connecting a 515 to a protective relay is shown below. FIGURE 1–1: Typical Wiring 515 BLOCKING AND TEST SYSTEM – INSTRUCTION MANUAL... - Page 3 The typical wiring for a zero-sequence ground fault is shown below: FIGURE 1–2: Typical Wiring for Zero-Sequence Ground Fault 515 BLOCKING AND TEST SYSTEM – INSTRUCTION MANUAL...
-
Page 4: Physical Dimensions
FIGURE 1–3: Panel Cutout Dimensions and Mounting Mounting Slide the metal chassis attached to the 515 test switches into the cutout from the front of the panel. While firmly applying pressure from the front of the 515 module to ensure the chassis fits snugly, bend out the retaining tabs as shown in FIGURE 1–3: Panel Cutout... -
Page 5: Detailed Operation
14 white tags for identification of each of the switches The 515 provides a means of trip blocking, relay isolation, and testing of GE Multilin relays. The 515 accomplishes this with a total of 14 switches. There are 6 single pole throw switches for use with the output relays, and 4 groups of 2 switches each for use with the current transformers as illustrated in FIGURE 1–1: Typical Wiring. - Page 6 With the switch between terminals 7 and 21 open and the switch between terminals 8 and 22 closed as shown below, a 515 test plug can be inserted between terminals 7 and 21 to monitor the CT current. See the following diagram for details. Note that the 515 test plug is made up of two conductors separated by an insulator.