product description

AC CONTROL MODULE

product description

Ross Hill s standard AC module has been utilized for over a quarter of a century. The module has proven itself by being the number one engine/generator controller in the drilling industry. Although the module’s control scheme has remained essentially the same, Ross Hill has continuously refined and improved module preformance to respond to our customers needs. At the same time Ross Hill's goal has always been to keep the module simple and reliable, and virtually eliminate the need for servicing and troubleshooting.

Features of the AC module:

Engine speed regulator.

KW sharing within 10% of maximum engine rating is provided by master/slave electronic circuit.

KVAR sharing by droop compensation.

HOC circuit for "black start" capability.

Operating temperature range is -30°C to +50°C.

No load to full load KW voltage is regulation less than 1%

No load to full load KVARS voltage regulation is3%

Additional advantages:

All AC modules are interchangeable for quick replacement and reduced inventory.

Module connections are hard wired, and there are no pin connectors to contaminate or loosen from vibration.

Burn-in testing eliminates any inferior components before the module leaves our plant.

Module carries standard Ross Hill warranty and can be returned for expert factory repair with a normal turn around time of about one week.

Protective functions provided by the module:

Xi'an RIG– Global Provider of Integrated Petroleum Drilling Equipment Solutions‌ ,is a China-based supplier headquartered in Xi’an, Shaanxi Province, specializing in end-to-end drilling equipment solutions for international oil & gas drilling operators, service companies, and EPC contractors worldwide.
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The company offers a comprehensive range of API-compliant drilling equipment, including:

‌Drilling Rigs & Hoisting Systems‌: Petroleum Drilling Rigs, Workover Rigs, Top Drive, Drawworks, Clutches, Traveling Block, Hook
‌Well Control & Wellhead‌: Blowout Preventers (BOPs), Wellhead Equipment, Wellhead Tools
‌Mud & Cementing Systems‌: Mud Pumps, Solids Control Equipment, Cementing Units, Cementing Tools
‌Specialized Downhole & Completion Tools‌: Fracturing Pumps, Coiled Tubing Units, Downhole Tools, Perforating Guns, Wireline Tools
All products are manufactured to meet ‌API 6A, API 7K, and API 16A‌ international standards, ensuring operational safety and reliability under extreme downhole conditions.
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Xi'an RIG sources its equipment exclusively from China’s leading oilfield equipment manufacturers, including:‌BOMCO MACHINERY‌,‌LS HEAVY EQUIPMENT‌ ,‌HONGHUA GROUP,SJ PETROLEUM,RG PETRO-MACHINERY‌

This vertical integration ensures traceable quality, consistent performance, and rapid spare parts availability.
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With established presence across ‌Middle East, Africa,Latin America, Southeast Asia,and the CIS region‌, Xi'an RIG delivers:

Customized Equipment Configurations‌
‌24/7 Remote Technical Support & Diagnostics‌
‌Extended Warranty Terms‌ (up to 36 months on select equipment)
‌On-Site Installation & Operator Training‌
Driven by a commitment to ‌professionalism, accountability, and high value‌, Xi'an RIG is trusted by over 200 international clients as a reliable partner in energy infrastructure development.