Specifications

December 2008 Page 1–17

Chapter 1. Product Description

Module Interfaces

HCB Interface HCB/HCB-1 DTT, PW

SPD Interface SPD DTT, PW

Table 1–13.

Pilot Wire Modules (HCB/SPD) Interfaces

Table 1–14. Pilot Wire Interface Modules (HCB/SPD) Specifications

1.24.11 Pilot Wire Interface Modules (HCB/SPD)

Signal Delay < 450 µs – two FOCUS chassis back-to-back

Channel Loss Three Optional Settings:

1) Block Trip (Local)

2) Allows Trip as Overcurrent Relay (Local & Remote)

3) Allows Local Overcurrent Trip and Block Remote

Ter m inal Trip

Pilot Wire Output Maximum 15 V peak

Maximum 100 ma

Direct Transfer Trip Keying input: 48 to 250Vdc at 5 ma

Trip Output: Solid State switch with 1A output at 48 to

250Vdc.

Trip Time: 5ms Solid State Output

Alarm Output Form A alarm contact output rated at 48 to 250Vdc at 1 A