3-16
L60 LINE PHASE COMPARISON SYSTEM – INSTRUCTION MANUAL
WIRING
CHAPTER 3: INSTALLATION
3
Table 3-2: Power supply LED on module
Figure 3-15: Control power connection
When using an SH power supply module, after disconnecting power and powering up again, some measured values
displayed can change from that last displayed. This is because there is not enough time for the compact flash to store
data. Upon power up the last stored value displays.
3.3.4 CT/VT modules
The CT and VT inputs are analog current transformer and voltage transformer signals used to monitor AC power lines. The
UR-series relays support 1 A and 5 A CTs.
A CT/VT module can have current or voltage inputs on channels 1 through 4 inclusive, or channels 5 through 8 inclusive.
Channels 1 and 5 are intended for connection to phase A, and are labelled as such in the relay. Likewise, channels 2 and 6
are intended for connection to phase B, and channels 3 and 7 are intended for connection to phase C.
Channels 4 and 8 are intended for connection to a single-phase source. For voltage inputs, these channels are labelled as
auxiliary voltage (VX). For current inputs, these channels are intended for connection to a CT between system neutral and
ground, and are labelled as ground current (IG).
To connect to the module, size 12 American Wire Gauge (AWG) is used commonly; the maximum size is 10 AWG.
LED indication
Power supply
Continuous on
OK
On/off cycling
Failure
Off
Failure or no power
When using a L60 with a HardFiber system, before powering off the L60, save data in the compact flash memory
using
Commands > Relay Maintenance > Save Non-Volatile Data
. When not saved or the relay loses power, up to
the last two minutes of data is not saved to the compact flash memory.
Verify that the connection made to the relay terminals for nominal current of 1 A or 5 A matches the
secondary rating of the connected CTs. Unmatched CTs can result in equipment damage or
inadequate protection.
Содержание L60
Страница 10: ...x L60 LINE PHASE COMPARISON SYSTEM INSTRUCTION MANUAL TABLE OF CONTENTS ...
Страница 14: ...1 4 L60 LINE PHASE COMPARISON SYSTEM INSTRUCTION MANUAL FOR FURTHER ASSISTANCE CHAPTER 1 INTRODUCTION 1 ...
Страница 122: ...3 72 L60 LINE PHASE COMPARISON SYSTEM INSTRUCTION MANUAL CONNECT TO D400 GATEWAY CHAPTER 3 INSTALLATION 3 ...
Страница 590: ...5 382 L60 LINE PHASE COMPARISON SYSTEM INSTRUCTION MANUAL TESTING CHAPTER 5 SETTINGS 5 ...
Страница 632: ...7 12 L60 LINE PHASE COMPARISON SYSTEM INSTRUCTION MANUAL TARGETS MENU CHAPTER 7 COMMANDS AND TARGETS 7 ...
Страница 736: ...A 14 L60 LINE PHASE COMPARISON SYSTEM INSTRUCTION MANUAL FLEXANALOG ITEMS APPENDIX A FLEXANALOG OPERANDS A ...
Страница 744: ...C 6 L60 LINE PHASE COMPARISON SYSTEM INSTRUCTION MANUAL COMMAND LINE INTERFACE APPENDIX C COMMAND LINE INTERFACE C ...
Страница 752: ...iv L60 LINE PHASE COMPARISON SYSTEM INSTRUCTION MANUAL ABBREVIATIONS ...