Instructional Literature
Page
140
Effective: May 2008
Instructions for the FP-6000 Protective Relay
For more information visit: www.eaton.com
IB02602004E
6.5 Drawout Alarm
The drawout alarm is implemented by use of the spare “N.C.” CT
terminals. When the relay chassis is inserted in the case, these
contacts are open. When the relay chassis is removed from the
case, these contacts close (self-shorting) thus providing an alarm.
These are the only spare terminals and they have the desired
characteristic of changing state mechanically when the relay
chassis is withdrawn.
6.6 Zone Interlocking Connections
The zone interlocking connection between relays is done by
means of a twisted shielded cable. Downstream Zone Interlock
outputs may be paralleled from up to ten devices (FP-6000 or
DT-3000 or a combination of both) for connection to upstream
Zone Interlocked relays. See Section 8.5.
6.7 URTD Interface and Wiring
6.7.1 URTD Interface
The optional URTD module provides temperature data to the
FP-6000 from up to 11 RTDs embedded in the motor, generator,
transformer, or cable connector and driven equipment (see
URTD I. L. 17367).
The URTD may be mounted remotely from the FP-6000. See
Figure 38 for URTD stand-alone mounting dimensions. The fiber
optic connector is located on the communication terminal board
TB3 J7 of the FP-6000.
Consider the benefit of mounting the URTD module away from
the FP-6000, as close to the protected equipment (such as motor,
generator, transformer, or cable connector) as possible. The big
bundle of RTD wires becomes much shorter. The URTD conveys
multiplexed temperature data back to the relay via a single
optical fiber. The URTD may be placed up to 400 ft (121.9 m) from
the FP-6000 with the optical fiber connection. Note that the URTD
will require 120 Vac power (6 VA) at its remote location.
6.7.2 URTD Wiring
Connect a source of 120 Vac only to the power terminals of
connector J3 on the URTD module. Connect either terminal 16 or
terminal 32 (but not both) to a non-current-carrying safety
ground.
Figure 38 shows connections between the URTD and the
FP-6000. The FP-6000 uses only the optical fiber connection. The
following table lists the fiber optic order options.
Table 38. Fiber Optic Order Options.
Notes:
The optical fiber is the only method of transmitting temperature data from
the URTD to the FP-6000. It is very easy to install.
Preassembled plastic optical fibers with connectors can be ordered from
Eaton Cutler-Hammer, or from any distributor of Agilent Technologies®
optical fiber products. In addition, these same distributors offer long rolls
of cable with connectors that can be installed in the field. Some distribu-
tors will make custom lengths to order.
Force is 50 Newtons (11 pounds).
Surplus length of a precut fiber causes no problems. Simply coil and tie
the excess fiber at a convenient point. Avoid high tie pressure. Bending
radius of the fiber should be greater than 2 in. (50.8 mm).
The fiber terminations simply snap into or out of the connectors of the
URTD and FP 6000.
6.7.3 Wiring RTDs to the URTD Module
Consult the URTD Module Instruction Leaflet (IL 17367).
Three URTD terminals are provided for each RTD input.
Terminals 115 and 17-19 are inputs for up to six winding RTDs.
Terminals 20 to 25 accept up to two motor bearing RTDs.
Terminals 26-31 accept up to two load bearing RTDs. Terminals
33 to 35 accept an auxiliary RTD.
The three terminals for any unused RTD input channel should be
wired together. For example, if MW5 and MW6 are unused, MW5
terminals 13, 14, and 15 should be wired together and MW6
terminals 17, 18, and 19 should be separately wired together.
See Figure 39 for wiring of RTDs to the URTD inputs. Use
#18 AWG, three-conductor shielded cable. Note the connection
rules in the Figure. When making connections to a two-lead RTD,
connect two of the cable conductors to one of the RTD leads as
shown. Make this connection as close to the motor as possible.
Connect the third cable conductor to the remaining RTD lead.
Connect the shield and drain wire, along with the one cable
conductor, to the middle of the three RTD input channel terminals
as shown in Figure 39. The RTD cable shield should be
connected only at the URTD end, and insulated at the RTD end.
The RTDs themselves must not be grounded at the motor.
CUTLER-HAMMER AGILENT TECHNOLOGIES
LENGTH
CATALOG NUMBER
NUMBER
1 m (3.3 ft)
MPFO-1
HBFR-ELS001 or HBFR-
RLS001
5 m (16.4 ft)
MPFO-5
HBFR-ELS005 or HBFR-
RLS005
10 m (32.8 ft)
MPFO-10
HBFR-ELS010 or HBFR-
RLS010
25 m (82.0 ft)
MPFO-25
HBFR-ELS025
50 m (164.0 ft)
MPFO-50
HBFR-ELS050
75 m (246.1 ft)
MPFO-75
HBFR-ELS075
76 m (249.3 ft)
MPFO-76
HBFR-ELS076
100 m (328.1 ft)
MPFO-100
HBFR-ELS100
120 m (393.7 ft)
MPFO-120
HBFR-ELS120
Uncut Fiber
HBFR-EUS (Length)
CAUTION
THE FP-6000 HAS VARIOUS POWER SUPPLY OPTIONS. IF IT IS NOT
120 VAC, THE POWER SUPPLY CANNOT BE SHARED WITH THE
URTD. THE URTD COMMUNICATIONS COMMON TERMINAL 22 IS
AT 120 VAC WITH RESPECT TO THE SUPPLY NEUTRAL.
