POWER LIMIT definition

POWER LIMIT. SYSTEM The Power Limit Circuit will monitor the KW & KVA of each engine generator set. If either of these parameters reach its limits, the Power Limit Circuit will reduce the power being delivered to the loads so that the load on each generator is held at its limit until the loads on the SCR drives are reduced (by other action) to a level below the generator limit. A meter on the Driller's Console indicates percent Power Limit. A warning lamp is illuminated on the Driller's Console at a load level just below the power limit. [NATIONAL OILWELL VARCO LOGO] Proposal -------------------------------------------------------------------------------- Customer Name: UNION DRILLING Quote No: NOI-10977-DWK Rev. 01 Project Name: Date: 10/20/05 Cust Ref No: -------------------------------------------------------------------------------- 8) PLC SYSTEM The System Host PLC is a high speed, versatile modular mini-PLC. The PLC is used for serial communication with remote consoles and other rig devices. Additionally, the PLC incorporates the SCR bridge assignment logic. The PLC shall consist of the following. Item Description 1 Siemens S7-300 Modular Mini-PLC 2 32 Bit, Fixed & Floating Point CPU 3 Up To 1024 Digital Inputs / 1024 Digital Outputs 4 Up To 256 Analog Inputs / 256 Analog Outputs 5 Complete Instruction Set With "Built-In" Functions 6 Built-In Self Diagnostics 7 Fiber Optic Communication Capability
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POWER LIMIT. SYSTEM The Power Limit Circuit will monitor the KW & KVA of each engine generator set. If either of these parameters reach its limits, the Power Limit Circuit will reduce the power being delivered to the loads so that the load on each generator is held at its limit until the loads on the SCR drives are reduced (by other action) to a level below the generator limit. A meter on the Driller's Console indicates percent Power Limit. A warning lamp is illuminated on the Driller's Console at a load level just below the power limit.
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