Technical Data P746/EN TD/G31
MiCOM P746
(TD) 2-1
TD
Technical Data
Mechanical Specification
Design
Modular MiCOM Px40 platform relay, Size 16“
case (80TE)
Mounting is front of panel flush mounting.
Enclosure Protection
Per IEC 60529: 1989
IP 52 Protection (front panel) against dust and
dripping water,
IP 50 Protection for the rear and sides of the
case against dust,
IP 10 Product safety protection for the rear due
to live connections on the terminal block.
Weight
P746: 13.4 kg
Terminals
AC Current and Voltage Measuring Inputs
Located on heavy duty (black) terminal block:
Threaded M4 terminals, for ring lug
connection.
CT inputs have integral safety shorting, upon
removal of the terminal block.
General Input/Output Terminals
For power supply, opto inputs, output contacts
and COM1& optional COM2 rear
communications.
Located on general purpose (grey) blocks:
Threaded M4 terminals, for ring lug
connection.
Case Protective Earth Connection
Two rear stud connections, threaded M4.
Must be earthed (grounded) using the
protective (earth) conductor for safety,
minimum earth wire size 2.5mm
²
.
Front Port Serial PC Interface
EIA RS232 DTE, 9 pin D-type female
connector.
Courier protocol for interface to MiCOM S1
software.
PEB* rated Maximum cable length 15m.
Front Download/Monitor Port
EIA RS232, 25 pin D-type female connector.
For firmware downloads. PEB* rated circuit.
Rear Communications Port
K-Bus/EIA(RS485) signal levels, two wire
Connections located on general purpose block,
M4 screw.
For screened twisted pair cable, multidrop,
1000m max. Courier protocol. SELV* rated
circuit.
Ethernet (copper & fibre)
Optional Second Rear Communication
PortEIA(RS)232, 9 pin D-type female
connector,
socket SK4. Courier protocol: K-Bus, or
EIA(RS)485 or EIA(RS)232. Maximum cable
length: 15m.
Optional Rear Ethernet Connection for
IEC 61850
10 Base T / 100 Base TX Communications
Interface in accordance with IEEE802.3 and
IEC61850
Isolation: 1.5kV. Connector type: RJ45
Cable type: Screened Twisted Pair (STP)
Max. cable length: 100m
100 Base FX Interface
Interface in accordance with IEEE802.3 and
IEC61850
Wavelength: 1300nm
Fiber: multi-mode 50/125µm or 62.5/125µm
Connector style: BFOC 2.5 - (ST®)
Optional Rear IRIG-B Interface modulated
or un-modulated
BNC socket
SELV* rated circuit.
50 ohms coaxial cable.
*: PEB = Protective equipotential bonded
*: SELV = Safety/Separated extra low voltage
Both PEB and SELV circuits are safe to touch
after a single fault condition.
Optional Rear redundant Ethernet
connection for IEC 61850
100 Base FX Interface
Interface in accordance with IEEE802.3 and
IEC61850
Wavelength: 1300nm
Fiber: multi-mode 50/125µm or 62.5/125µm
Connector style: BFOC 2.5 -(ST®)
Transmitter optical characteristics 100 base FX
interface
Transmitter Optical Characteristics – 100
base FX interface
(TA = 0°C to 70°C, VCC = 4.75 V to 5.25 V)
Parameter Sym Min. Typ. Max Unit
Output Optical Power
BOL: 62.5/125 µm,
NA = 0.275 Fiber EOL
P
OUT
–19
–20
–16.8 –14
dBm
avg.
Output Optical Power
BOL: 50/125 µm,
NA = 0.20 Fiber EOL
P
OUT
–22.5
–23.5
–20.3 –14
dBm
avg.
Optical Extinction
Ratio
10
–10
%
dB
Output Optical Power
at Logic “0” State
P
OUT
(“0”)
–45
dBm
avg.
BOL – Beginning of life
EOL – End of life
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