Description

The GE 705-1512-01 is a high-reliability, modular power supply assembly designed and manufactured by General Electric for its flagship Mark V and Mark VI gas and steam turbine control systems. This critical component is responsible for converting the incoming AC facility power into the clean, stable, and precisely regulated DC voltages required to operate the sensitive digital and analog electronics within the Speedtronic control racks. The GE 705-1512-01 acts as the heart of the control cabinet’s power distribution system, providing multiple isolated output voltages (such as +5 VDC, ±15 VDC, and +24 VDC) to feed the VME backplane, I/O modules, processor boards, and other critical circuitry. Its design prioritizes absolute reliability and noise immunity, as any power anomaly could lead to erroneous control signals or a complete turbine shutdown. The integrity of the GE 705-1512-01 is fundamental to the continuous and fault-free operation of the entire turbine control and protection system, ensuring that processors and sensors receive uninterrupted and clean power under all operating conditions.

705-1512-01 GE

Technical Specifications

Parameter Name	Parameter Value
Product Model	705-1512-01
Manufacturer	GE (General Electric)
Product Type	Turbine Control Power Supply Assembly
Input Voltage	120 VAC / 240 VAC (Configurable, 50/60 Hz)
Primary Output Voltages	+5 VDC, +15 VDC, -15 VDC, +24 VDC (Field)
Output Power Rating	Typically 250W – 350W (Total Power)
Load Regulation	≤ ±1%
Line Regulation	≤ ±0.5%
Ripple & Noise	< 50 mV peak-to-peak
Protections	Overvoltage (OVP), Overcurrent (OCP), Overtemperature (OTP)
Cooling Method	Convection or forced air (depending on specific variant)
Mounting	Chassis-mounted within the turbine control rack
Safety Certifications	UL, cUL, CE compliant

Main Features and Advantages

The GE 705-1512-01 is engineered for exceptional performance in the demanding environment of a power generation facility. Its most critical feature is its robust and heavily filtered design, which provides exceptional noise immunity against the severe electrical transients and electromagnetic interference (EMI) common in switchyards and near large rotating machinery. This ensures that sensitive analog measurement cards and digital processors receive pristine power, which is paramount for accurate control and reliable protection. The power supply incorporates comprehensive protection circuitry, including overvoltage (OVP) and overcurrent (OCP) shutdown, which safeguard both the supply itself and the expensive downstream control modules it powers. Many variants are designed with a degree of redundancy or are operated in parallel with other supplies to enhance system availability. As a genuine GE OEM part, the 705-1512-01 offers a key advantage: guaranteed compatibility and performance, ensuring seamless integration and maintaining the original design’s safety margins and reliability. Its modular design allows for straightforward replacement, minimizing critical turbine downtime during maintenance.

Application Field

The application of the GE 705-1512-01 is exclusively within the power generation industry, specifically in facilities utilizing GE Mark V or Mark VI turbine control systems. This includes large-scale combined-cycle power plants, simple-cycle peaker plants, and industrial cogeneration facilities that rely on GE Frame gas turbines (e.g., Frame 5, 6, 7, 9) or steam turbines. The power supply is mounted inside the designated turbine control rack, which is typically located in a protected control room adjacent to the turbine deck. Its operation is fundamental to every aspect of turbine management; it powers the Triple Modular Redundant (TMR) controllers, I/O modules that interface with fuel valves, actuators, and sensors, and the communication gateways that link to the plant DCS. A failure of the 705-1512-01 would result in a complete loss of control for that rack, leading to an immediate turbine trip. Therefore, it is considered a critical spare part, and its reliability is directly tied to plant availability and revenue.

705-1512-01 GE

Related Products

DS200PCCAG1AAF: A Power Conversion Card often used in conjunction with or as part of the power supply system in GE drives and controls.

IS200PSVOH1ABC: A Power Supply Verication module from the Mark VI series, used for monitoring power health.

IS200EPSMG2AED: An Excitation Power Supply Module, representing another critical power component within the turbine ecosystem.

DS200TCPDG1AHB: A Terminal Board Assembly that distributes power from supplies like the 705-1512-01 to various modules.

H201AP: A common part number for a replacement internal fan unit used to cool these power supply assemblies.

GE EX2100 Excitation System: While a larger system, it relies on similar high-integrity internal power supplies for its operation.