Woodward QuickTrip Electro-Hydraulic Trip Block Assembly Input Power
Input Power
The QuickTrip requires a power source capable of supplying the necessary output voltage and current
at full transient conditions. The maximum power in watts (W) of a DC source can be calculated by
multiplying the rated output voltage by the maximum output current capability. The calculated power
rating of the supply should be greater than or equal to QuickTrip requirements. The electrical power
supply should be able to provide 8 A (or 2.6 A per channel) at 24 VDC continuously.
Cable selection and sizing is critical to avoid power loss during operation. The power supply
input at the electronic module input terminal must always provide the required nominal voltage to operate
the valve.
The input power wires must comply with local code requirements and be of sufficient size such that the
power supply voltage minus the IR loss in the two lead wires to the QuickTrip valve electronics module
does not drop below the input minimum voltage requirement.
The QuickTrip is not equipped with an input power disconnect. A means of disconnecting input power to
the QuickTrip must be provided for safe installation and servicing.
The QuickTrip is not equipped with input power protection. A means of protecting input power to the
QuickTrip must be provided. Breakers or fuses are intended to protect installation wiring and power
sources from faults in the QuickTrip or wiring. A circuit breaker meeting the requirements listed in the
table below, or a separate protection with the appropriate ratings, may be used for this purpose.
Circuit protection, which isolates both positive and negative leads, is recommended.
Refer to the table below for recommended fuse ratings or circuit breakers.