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RTT DESKTOP TEST SET– INSTRUCTION MANUAL
11
RTT Desktop Test Set
Chapter 2: Using the RTT on SR
Series Relays
GE Consumer & Industrial
Multilin
Using the RTT on SR Series Relays
2.1
The 469 Motor Management Relay
2.1.1
Overview
The SR469 Relay has 3-phase current inputs with CT burden less than 0.2VA at rated load, 3
differential current inputs with the same CT burden and 3-phase voltage inputs with
greater than 500KOHM VT burden. There are also 9 digital inputs designed for Dry contact
connection only, and 6 Form-C output relays. The SR469 Relay monitors up to 12 RTD
inputs, each RTD being field programmable as a 3-wire type of 100 Platinum, 100 Nickel
and 120 Nickel.
All features of RTT can be applied to the SR469 Relay. Although there are no unused
terminals on the RTT product cable, a modification to the cable is required in order to fit it
to the SR469 terminals.
Modification of the Product Cable
For the wires related to contact inputs and RTDs (18 in total), cut the lugs off the wire, strip
wire to make them fit to the SR469 terminals.
The lugs to be cut are: R1+, R1-, R1C, R2+, R2-, R2C, R3+, R3-, R3C, DIC, DI8, DI7, DI6, DI5,
DI4, DI3, DI2 and DI1.