Product Introduction
This comprehensive HH drawworks electrical spare parts portfolio covers all mission-critical electronic components for JC20 and JC318.00 models, including explosion-proof encoders, pressure sensors, PLC function modules, circuit breakers, contactors, quick connectors, plugs, sockets, and program cards. Each part is manufactured to HH original equipment specifications, with certified explosion-proof ratings for hazardous gas zones and industrial-grade durability to withstand extreme rig vibration, temperature fluctuations, and dust exposure. Every component undergoes 100% functional testing, signal accuracy calibration, and endurance cycling to guarantee consistent performance, making this list the definitive sourcing reference for both routine electrical maintenance and emergency fault repairs.
Key Functional Specifications
- Explosion-Proof Encoder Performance: HH JC20 absolute encoder (1400036924) delivers 0.01° position accuracy, ATEX/IECEx Ex-proof rating for Zone 1 hazardous areas, and stable signal output under -40°C to 85°C operating temperatures
- Pressure Sensor Precision: DG1300-GE-A-2-1.6/CD10 pressure sensor (1400045613) provides 0.25% FS measurement accuracy for 0-1.6MPa pressure ranges, with anti-interference filtering for stable VFD system feedback
- Electrical Control Reliability: MT16H1 circuit breaker (1400036406) offers 3P/220VAC overload protection, 4XOF auxiliary contacts, and 10,000+ operation cycles for VFD system safety
- Connector Durability: IE quick connectors and multi-core plugs/sockets feature gold-plated contacts, IP67 waterproof/dustproof rating, and 10,000+ mating cycles to prevent loose connections
- PLC & Program Card Stability: PLC function modules and program cards ensure real-time drawworks control, with flash memory retention and anti-vibration design to eliminate signal loss
Structural Design Features
- OEM-Matched Form & Fit: All parts follow original HH JC20/JC318.00 drawworks electrical layout, requiring no wiring modifications or adapter fittings
- Explosion-Proof Enclosure Design: Encoder and sensor housings are sealed to prevent gas ingress, complying with international hazardous area standards
- Anti-Vibration Construction: Reinforced mounting brackets and shock-absorbent components resist rig-induced vibration, preventing component damage
- Quick-Connect Electrical Interface: Plug-and-socket designs enable fast, error-free installation, cutting electrical repair downtime by up to 70%
- Labeled Component Markings: Clear part number and function labeling simplify identification and replacement for on-site technicians
Applicable Operating Conditions
These HH drawworks spare parts are certified for use in harsh drilling environments, optimized for the following parameters:
- Land/offshore drilling rigs with HH JC20 and JC318.00 VFD electric drawworks
- Hazardous gas zones (ATEX/IECEx Ex-proof rated components)
- Operating ambient temperature: -40°C to 85°C; relative humidity: 5-95% non-condensing
- High-vibration, high-dust rig environments with 24/7 continuous operation
- VFD-controlled drawworks systems requiring precise electronic feedback and control
Maintenance & Troubleshooting Best Practices
- Routine Electrical Inspection (Every 800 Drilling Hours): Check connector tightness, sensor signal output, and circuit breaker status; clean contacts to remove dust/corrosion
- Preventive Replacement (Every 3000 Drilling Hours): Replace multi-core plugs, sockets, and connector seals to prevent intermittent electrical faults
- Sensor Calibration: Calibrate pressure sensors and encoders quarterly to maintain measurement accuracy within 0.25% FS tolerance
- PLC System Care: Back up program card data annually; inspect for physical damage and replace at the first sign of signal errors
- Explosion-Proof Component Checks: Inspect seal integrity of Ex-proof encoders/sensors biyearly to maintain hazardous area compliance
- We supply the following spare parts:
| Description |
| SENSATOR, FOR DEADLINE ANCHOR, MAKE: MDTOTCO, P/N: 10088990-001 |
| ABSOLUTE ENCODER, EX-PROOF, FOR DRAWWORKS, MODEL: JC20, MAKE: HH, P/N: 1400036924 |
| IE QUICK CONNECTOR, FOR DRAWWORKS, MODEL: JC20, MAKE: HH, P/N: 1400004089 |
| PLC FUNCTION MODEL, FOR DRAWWORKS, MODEL: JC20, MAKE: HH, P/N: 1400027445 |
| CIRCUIT BREAKER, MT16H1;3P, 4XOF, 220VAC, FOR VFD, MODEL: MT16H1;MIC5.0E;3P;4×OF;220VAC, MAKE: HH, P/N: 1400036406 |
| CONTACTOR, FOR DRAWWORKS, MODEL: JC20, MAKE: HH, P/N: 1400002593 |
| PROGRAME CARD, FOR DRAWWORKS, MODEL: JC20, MAKE: HH, P/N: 1400035421 |
| PLUG, 10 CORES, FOR DRAWWORKS, MODEL: JC20, MAKE: HH, P/N: 1400032656 |
| SOCKET 4, 10 CORES MOVABLE, FOR DRAWWORKS, MODEL: JC20, MAKE: HH, P/N: 1400032653 |
| PLUG, 4 CORES, FOR DRAWWORKS, MODEL: JC20, MAKE: HH, P/N: 1400032668 |
| PLUG, 4 CORES, FOR DRAWWORKS, MODEL: JC20, MAKE: HH, P/N: 1400032673 |
| PRESSURE SENSOR,MODEL:DG1300-GE-A-2-1.6/CD10/AH/TX;0-1.6Mpa, FOR DRAWWORKS, MODEL: JC318.00, MAKE: HH, P/N: 1400045613 |
Field Fault Repair Cases (Real Drilling Site Scenarios)
Case 1: JC20 Drawworks Position Loss & Hoisting Failure
Field Scenario: A land rig’s HH JC20 drawworks lost position feedback, causing erratic hoisting and automatic shutdown mid-operation.
Root Cause: Failed HH JC20 absolute encoder (1400036924) resulted in no position signal transmission to the PLC system.
Resolution: Replaced the faulty explosion-proof encoder, re-calibrated position settings, and verified signal output. Full hoisting control and position accuracy were restored.
Case 2: VFD System Overload Trip & Circuit Breaker Failure
Field Scenario: An offshore rig’s JC318.00 drawworks VFD system repeatedly tripped due to overload, with no fault reset capability.
Root Cause: Defective MT16H1 circuit breaker (1400036406) failed to regulate current, causing persistent overload trips.
Resolution: Installed a new OEM circuit breaker, tested overload protection, and restarted the VFD system. Normal operation resumed with no further tripping.
Case 3: Intermittent Pressure Signal Loss & Control Instability
Field Scenario: A desert rig’s HH drawworks exhibited unstable control due to intermittent pressure sensor signal loss.
Root Cause: Faulty DG1300-GE-A-2 pressure sensor (1400045613) and corroded 4-core plug connection disrupted feedback signals.
Resolution: Replaced the pressure sensor and worn 4-core plug, cleaned connector contacts, and secured wiring. Stable pressure feedback and control were restored.
Frequently Asked Questions (FAQ)
| Question | Answer |
| Are these parts 100% compatible with HH JC20 and JC318.00 drawworks? | Yes, every spare part is manufactured to HH OEM specifications, with perfect form, fit, and function for JC20 and JC318.00 models. |
| Do the encoder and sensor components hold hazardous area certifications? | Absolutely, the absolute encoder and pressure sensor carry ATEX/IECEx explosion-proof ratings, approved for use in Zone 1 hazardous drilling environments. |
| Can I purchase individual electrical components instead of a full set? | Yes, you can source any single part from this list based on your specific repair needs, with full quality assurance and certification for each component. |
Procurement Guidance
For electrical maintenance teams, procurement specialists, and rig operators relying on HH JC20 and JC318.00 drawworks, this verified spare parts list is your definitive sourcing and technical reference. Each part is labeled with its original HH part number, function, and compatible model for hassle-free ordering, meeting strict API and international hazardous area standards to ensure equipment safety and performance. Whether you need to stock critical electrical spares for routine preventive maintenance, replace failed components during emergency downtime, or refurbish drawworks control systems, these high-quality, OEM-matched parts deliver the reliability and precision required for harsh drilling environments. Reference the detailed part numbers below to secure the exact components you need, and leverage the included maintenance guidelines to resolve on-site electrical faults efficiently and maintain uninterrupted drawworks operation.
