Epro PR6423/003-030+CON021 vibration sensor

Description

Epro PR6423/003-030+CON021 vibration sensor

EPRO PR6423/003-030+CONQ21 vibration sensors have been a research hotspot in relay protection to improve the ability of ground distance protection to withstand transition resistance. Traditional directional impedance relays operate in the forward two-phase and single-phase directions
Short circuit to external ground of transition resistor
Time, all
The phenomenon of exceeding the range of action may occur, and the allowable transition resistance is also small, so the directional impedance relay as a measuring element for ground faults is not ideal. Therefore, it is necessary to research and develop grounding distance relays with new principles.
Someone has proposed a grounding reactance relay scheme based on differential equation algorithm. In this scheme, it is recommended to use the sum of the fault components of positive and negative sequence currents to approximate the fault current flowing through the fault point. By solving the differential equation
Determine whether the fault is in the protection zone by solving the Equation solving. The experimental results show that the ability of epro PR6423003-30+CON21 vibration sensor, a grounding reactor relay, to respond to high resistance grounding faults is significantly improved, but the relay can withstand the transition resistance
The ability is greatly influenced by changes in positive and negative sequence operating parameters. In actual power systems, the zero sequence network of the system is relatively stable, so it is recommended to replace the fault current flowing through the fault point with the zero sequence current flowing through the relay.
Due to the fact that the algorithm for solving differential equations is based on instantaneous value calculation, the epro PR6423/003-030+CON021 vibration sensor has a simple mathematical model, fast calculation speed, and strong ability to withstand transition resistance, making it the preferred algorithm for microcomputer based grounding distance protection. but
The grounding reactance relay based on differential equation algorithm has the problem of out of range steady-state overshoot under certain operating modes in the power system. In response to this issue, a new algorithm based on the principle of phase compensation for apparent distance is proposed. The grounding distance relay implemented using this algorithm can select different phase compensation values for zero sequence current based on changes in system operating conditions, ensuring that the protection does not malfunction beyond the range in case of external faults. However, the performance of the grounding distance relay is greatly affected by the angle setting value based on the principle of phase compensation. Polarized grounding distance relays have shown excellent performance in reflecting high resistance grounding faults, and are widely used as measuring elements for grounding distance protection in line protection devices. Epro PR6423/003-030+CON021 vibration sensor

Regarding after-sales service:
After the goods are delivered to your doorstep, please unpack and inspect them before receiving them. If there are any quality issues within three days after the goods are signed for, they will be returned or exchanged (the signing time is based on the official website data of the express delivery), except for the buyer’s own mistake in product model, parameters or foot cutting, machine installation, incorrect power connection, incorrect installation, improper storage, or human damage. If no objections are raised within three days, no return or exchange requests will be accepted.
Contact information: Manager Xiongba Luo 18030183032 (+v) QQ3248602330
Release brand
1. Bently Nevada: 3500/42M, 3500/15, 330180-51-05, 330130-040-00-00 2. Honeywell: FC-TSAL-1620M, CC-PAIHO2, 51304483-100, 10201/2/1
3. ABB: IMMFPO2, CMA120 3DDE300400, DAI03, PM510V08 3BSE008373R14. GE/General Electric: DS200TBQAG1ABB, IS220PAICH2A, IS200STCIH2AED, UR67H5. EPRO: MMS6110, A6120, CON021, PR6423/013-110