
12.7 Input Connector Ratings
127
12.7
Input Connector Ratings
Connections
Removable screw-clamp terminal block, accepting 0.2
−
4
mm
2
(AWG 24-10) solid or stranded conductors
Insulation
400 V, nominal, to neutral/chassis, surge voltage class III
600 V, nominal, to neutral/chassis, surge voltage class II
Contact factory for more detailed information
12.8
Instrument Interface
12.8.1
Front Panel Indicators and Controls
Status LEDs
Operate (green)
Time Set (green)
Unlocked (red)
Fault (red)
Display
2 X 20 character LCD display
Keypad
8 button, for status only (for configuration, see Chapter 7)
12.8.2
External Interface Connections
Serial
Two, RS-232 or RS-485 half-duplex or modem (V.34bis,
33.6k) optionally available for each port
Connectors
Two, RJ-11 modular;
One, RJ-45 modular Ethernet: 10base-T per IEEE 802.3I
12.8.3
Programmable Contact Output Connections
Two types of programmable relays are offered with the 1133A: standard mechanical, Form-C
(SPDT) and optional solid-state, Form-C for use with KYZ pulse metering. Use protective measures
when using optional KYZ-rated contacts to guard against surges that will damage the contacts if
ratings are exceeded. See “Configuring Multimode Relays” in Section 7.10, for details on configuring
contacts.