Device Type: Multifunctional protection relay for medium-voltage (3–35kV) power systems
Core Protection Functions:
Short-Circuit Protection: Three-stage overcurrent protection (instantaneous, time-delayed instantaneous, overcurrent) with adjustable setting range 0.5–20×CT rated current and operating time 0.01–10s
Overload Protection: Inverse-time or definite-time selectable, setting current 1.0–1.5×rated current, operating time 1–120s
Voltage Protection: Overvoltage protection (105–120% rated voltage), undervoltage protection (80–95% rated voltage), operating time 0.1–10s
Component Type: Industrial DC-DC power supply module, dedicated to powering GE Speedtronic Mark VI/VII turbine control system electronics.
Input Specifications: DC input voltage range 18–32 V DC (nominal 24 V DC), compatible with GE’s redundant power supply systems; input current ≤ 10 A (full load).
Output Specifications: Dual isolated output channels; Channel 1: 5 V DC, 4 A (continuous), 6 A (peak, ≤ 3 seconds); Channel 2: 15 V DC, 2 A (continuous), 3 A (peak, ≤ 3 seconds); output voltage regulation ±0.1% (line regulation), ±0.2% (load regulation).
Isolation Performance: Input-output isolation voltage 2500 V AC (1 minute); inter-channel isolation voltage 1500 V AC (1 minute); insulation resistance ≥ 100 MΩ at 500 V DC, ensuring protection against voltage transients and cross-channel interference.
Ripple and Noise: ≤ 50 mVpp (Channel 1, 5 V DC); ≤ 100 mVpp (Channel 2, 15 V DC), minimizing interference with sensitive control electronics (e.g., analog signal converters).
Protection Functions: Overload protection (auto-recovery after fault clearance), short-circuit protection (current limiting), over-voltage protection (clamping at 110% of nominal output), over-temperature protection (auto-shutdown at ≥ 85°C), and reverse-polarity protection (input terminal).
Operating Environment: Temperature range -20°C to +70°C (operating); -40°C to +85°C (storage); relative humidity 5%–95% (non-condensing); vibration resistance up to 5 g (10–500 Hz); shock resistance up to 20 g (half-sine pulse, 11 ms duration).
Mechanical Specifications: Metal housing with IP20 protection rating; DIN rail or panel mounting; dimensions (W×D×H) 120 mm × 180 mm × 60 mm; weight ≈ 0.8 kg.
Compatibility: Fully compatible with GE Speedtronic Mark VI, Mark VIe, and Mark VII turbine control systems; compatible with GE DS200 series I/O modules, IS200 series excitation controllers, and Turbine Control Panels (TCPs).
Diagnostic Features: LED indicators for power status (green: normal; red: fault), output current monitoring, and over-temperature alerts; diagnostic data accessible via GE’s ToolboxST software for remote troubleshooting.
Compliance Standards: IEC 61000-6-2 (EMC immunity), IEC 61000-6-4 (EMC emissions), UL 508 (industrial safety), CE marking, and GE’s internal turbine control system certification (Mark VI/VII compliant).
The technical parameters of GE IS415UCVHH1A are optimized around two core goals: “stable power supply” and “industrial adaptability.” Key specifications include:
Voltage Conversion Performance
Input Voltage Range: 18V DC – 72V DC (covers voltage fluctuations from common industrial battery packs, such as 24V or 48V).
Output Voltage: 24V DC ±0.5% (voltage stability ≤0.1% under varying loads, preventing malfunctions in sensitive components due to voltage drift).
Output Current: 10A (rated) / 15A (short-term peak, up to 10 seconds) – sufficient to power 10–12 low-power modules simultaneously.
Maximum Output Power: 240W (24V DC × 10A) – matches the power demands of most components in the Mark VIe system.
Efficiency and Anti-Interference Capability
Conversion Efficiency: ≥92% (at 50%–100% load) – low energy loss minimizes self-heating of the module.
Output Ripple: ≤50mVpp (far below the industry average of 80mVpp), avoiding interference with sensor signal acquisition.
Electrical Isolation: Isolation voltage between input and output ≥2kV AC (for 1 minute) – prevents current crosstalk between circuits.
Reliability and Environmental Adaptability
Operating Temperature: -25°C to +70°C (tolerates extreme environments, such as high temperatures in thermal power plant turbine halls or low temperatures in outdoor settings).
Protection Functions:
Short-circuit protection (automatic recovery after fault resolution).
Overload protection (current limiting to 15A).
Over-temperature protection (shutdown at +85°C, restart when cooled to +70°C).
Reverse polarity protection (prevents damage from incorrect positive/negative wiring).
Mean Time Between Failures (MTBF): ≥5,000,000 hours (backed by GE’s industrial-grade component selection and structural design).
Mechanical Dimensions
Size: 120mm × 160mm × 40mm (compact design, compatible with standard DIN rail mounting in Mark VIe cabinets).
Weight: Approximately 300g – easy to install in space-constrained control cabinets.
