Ordering - GE L90 Instruction Manual

2.1 INTRODUCTION
MONITORING:
Oscillography of current, voltage, FlexLogic™ operands, and digital signals (1 × 128 cycles to 31 × 8 cycles configu-
•
rable).
• Events recorder: 1024 events.
• Fault locator.
METERING:
2
• Actual 87L remote phasors, differential current, channel delay, and channel asymmetry at all line terminals of line cur-
rent differential protection.
• Line current, voltage, real power, reactive power, apparent power, power factor, and frequency.
COMMUNICATIONS:
• Front panel RS232 port: 19.2 kbps.
• One or two rear RS485 ports: up to 115 kbps.
• 10Base-F Ethernet port supporting the IEC 61850 protocol.
a) OVERVIEW
The L90 is available as a 19-inch rack horizontal mount or reduced-size (¾) vertical unit and consists of the following mod-
ules: power supply, CPU, CT/VT, digital input and output, transducer input and output, and inter-relay communications.
Each of these modules can be supplied in a number of configurations specified at the time of ordering. The information
required to completely specify the relay is provided in the following tables (see chapter 3 for full details of relay modules).
Order codes are subject to change without notice. Refer to the GE Multilin ordering page at
http://www.GEindustrial.com/multilin/order.htm
NOTE
The order code structure is dependent on the mounting option (horizontal or vertical) and the type of CT/VT modules (regu-
lar CT/VT modules or the HardFiber modules). The order code options are described in the following sub-sections.
2-4
for the latest details concerning L90 ordering options.
L90 Line Current Differential System
2 PRODUCT DESCRIPTION

2.1.3 ORDERING

GE Multilin