The turbine control valve displacement sensor B151.36.09.04.010 is a high-precision displacement monitoring device, and its signal stability is particularly critical in the inverter environment with dense electromagnetic interference. When the inverter is running, high-frequency PWM signal switching and harmonic noise can easily invade the sensor signal line through radiation or conduction paths, causing measurement value fluctuations or false triggering, affecting the control accuracy of the equipment. In order to effectively suppress such interference, it is necessary to build an electromagnetic compatibility protection system through shielded cables and grounding optimization strategies.

 

The structural design of the shielded cable can significantly reduce the risk of noise coupling. The inner layer uses metal foil shielding, which tightly wraps the signal conductor and quickly discharges electrostatic induction noise through a low-impedance path; the outer layer is a braided mesh shielding, which forms a low-impedance loop through multi-point grounding to absorb and suppress high-frequency electromagnetic radiation interference. The synergistic effect of the two layers of shielding makes the cable have stronger anti-interference ability, especially in areas with dense inverters, which can effectively isolate electromagnetic noise from power lines, control lines and surrounding equipment. In practical applications, it is recommended to use a copper mesh braided shielding layer with an outer layer coverage of not less than 95%, and ensure that the insulation between the inner metal foil and the outer shielding layer is good to avoid secondary interference caused by parasitic capacitance.

 

Grounding optimization needs to take into account both the shielding layer performance and system stability. The inner shielding layer should be grounded at a single point at the signal source end to eliminate the common mode voltage caused by the potential difference between the two ends; the outer shielding layer is connected to the unified grounding busbar through a short and thick grounding wire, and multi-point grounding is implemented at key nodes such as the inverter cabinet and control cabinet to reduce the grounding impedance. In order to avoid noise coupling caused by ground loop current, the grounding system should strictly follow the "one-point grounding" principle, that is, all grounding wires eventually converge to the same reference point, and the grounding resistance is controlled below 0.5Ω. In addition, the signal line and the power line should be physically isolated to avoid parallel laying. If necessary, they should be separated by metal bridges or pipes to further block the noise propagation path.

 

YOYIK is located in Deyang, Sichuan Province, China. It is a well-known equipment and parts manufacturer in the power industry, focusing on the supply of parts for steam turbines, generators and hydroelectric generator sets. The company adheres to the principle of "technological innovation, quality first", adopts advanced production equipment and strict quality control system to provide high-quality products that meet international standards to global customers. YOYIK not only provides products, but also provides professional and comprehensive solutions for industries such as power, metallurgy, and chemical industry, helping customers improve equipment performance and optimize operating costs.

 

Yoyik can offer many spare parts for power plants as below:

 

#DF-Displacement Sensors B151.36.09.04.010-DF

speed sensor CS-1-UNF-085-05

PRESSURE TRANSMITTER 4RN-K5-N4-BIA(3-50PSI, 750PSI, 1000PSI)

eddy current transducer CP-3600S

MAGNETIC REED SWITCH BN 20 - 11RZ - M16

pressure switch price RC861CZ090HYR

Eddy Current Sensor PR6423/004-020

LIMIT SWITCH C62ED

micropulse linear transducer TDZ-1E-33

Rotation Speed Sensor CS-3-M10*1 L=130

Eddy Current Sensor PR6424/011-130

Oil level gauge KCY-15/16-900/3/10

thermal resistance WZP-014

Weighing belt feeder controller Micro-Tech 9105

Thyristor NFP-KC5

pressure measuring machine RC861CZ090ZYMA59

BFP Rotation Speed Probe CS-3-L190

boiler pressure switch 12NN-K5-N4-B1A

LVDT Sensor TD-1GN-050-15-01-01

Variable Reluctance Speed Sensor E58S40

Active Power Transducers QUINT PS1AC/24DC/20

Isolated barrier GS8071-EX

TRANSMITTER O2 ANALYZER S-HPO

Turbine TSI Safety Monitor A6120

Intermediate relay UEG/A-4DPDT/110VDC

Tempered glass (accessories included) SFD-SW32-(ABC)

De-excitation Switch HSBA131324R0500

LVDT transmitter XCBSQ-02/250-02-12

TIMER NJS1-2Z

Flame TV Ball Head DZHJ-D

Sensor DF310880-50-01-02

LVDT transmitter XCBSQ-02/200-01-01

Motion detector DET500B

PH measurement device PHG-5288

Inductance Limit Switch ZHS-4-N-03K

Signal conditioning module switch quantity HSDS-30/FD

ROTOR ECCENTRICITY CWY-DO-20T08-M10*1-B-00-05-50K

Differential pressure transmitter CM-I

Displacement Sensors B151.36.09.04.010

 

LVDT SENSOR TDZ-1G-43

temperature rtd pt100 WZP2-014S

LVDT transmitter XCBSQ-02/350-01-00

Level Transmitter PCLP41-GP-L=6m-1-01-M3-D

Eddy Current Sensor PR6422/000-000

Rectifier bridge cooling fan GDRM42

LVDT sensor DET200B

Speed sensor SYSE08-01-060-03-01-01-02 1S001 5482

LVDT Sensor 1500TDGN-15-01

temperature sensor k type thermocouple TE-204

TIMER NJS1-2Z

Probe TDZ-1-33

VIBRATION SENSOR 5500-H-B

Thermowell TE-109

cam bien ap luc truoc luoi chan rac MPM426W

Control interface board PCD231B

prox sensor PR6423/010-010

speed sensor 143.35.19-1

Serial Communication Card PCL-745B

Sensor DF311180-90-10-00

Eddy Current Sensor PR6423/003-111

Eddy Current Sensor PR6423/003-031

Eddy Current Sensor PR6422/100-010

inductive pressure transducer RC861CZ090HYT

Temperature gauge HS75671

High Resistance Probe CS-1-G-150-05-01

LVDT transmitter XCBSQ-04/200-01-22

LVDT Sensor B151.36.06(1)G03

Sensor Speed DEH SEC-143.35.19

pressure switch price BPSN4KB25XFSH2

LVDT transmitter XCBSQ-02/200-02-01

Braun Card D521.02

Sensor DF310580-90-07-00

SENSOR CABLE 84661-30

variable reluctance pickup G-065-05-01

Eddy Current Signal Converter CON041/915-060

OIL LEVEL INDICATOR YZF-200 (TH)

Displacement Sensors B151.36.09.04.010

 

MY-DFYL-2025-5-19