GE IS200VPROH1A IS200VPROH1AC Circuit board

Description

GE General Electric Technical Specifications: IS200VPROH1A

IS200VPROH1A Time overcurrent tripping time calculations are made with an internal ‘energy

capacity’ memory variable. When this variable indicates that the energy capac

ity has reached 100%, a time overcurrent trip is generated. If less than 100% is

accumulated in this variable and the current falls below the dropout threshold

IS200VPROH1A of 97 to 98% of the pickup value, the variable must be reduced. Two methods

of this resetting operation are available, Instantaneous and Linear. The Instan

taneous selection is intended for applications with other relays, such as most

static units, which set the energy capacity directly to zero when the current

falls below the reset threshold. The Linear selection can be used where the

relay must coordinate with electromechanical units. With this setting, the

energy capacity variable is decremented according to the following equation.

Directional overcurrent relaying is necessary for the protection of multiple source feeders, when it is essential

to discriminate between faults in different directions. It would be impossible to obtain correct relay selectivity

IS200VPROH1A through the use of a non-directional overcurrent relay in such cases. Fault directional control (ANSI device 67)

is incorporated into the relay for all phase, neutral, sensitive ground, and negative sequence overcurrent ele

ments. If directional control is selected, it will determine whether current flow in each phase is in the forward or

reverse direction, as determined by the connection of the phase source CTs, selected MTA angle, voltage and

current phasors. Each overcurrent element can be individually programmed to operate for flow only in specific

IS200VPROH1A directions. For increased security, all overcurrent elements under directional control add one power frequency

cycle of intentional delay to prevent operational errors on current ‘swings’.

Some terms commonly used in directional relaying are defined as:

Operating Current: the quantity whose directionality is to be tested.

Polarizing Voltage: a voltage whose phase will remain reasonably constant between a non-faulted and a

faulted system, used as a phase reference for the operating current.

Relay Connection: for phase directional relaying, the characteristic angle between the operating current

and the polarizing voltage in the non-faulted system.

Zero Torque Line: the boundary line between operating and blocking regions in the complex plane; in an

electromechanical directional relay, an operating current near this line generates minimum torque.

Maximum Torque Line: the line perpendicular, through the origin, to the Zero Torque Line in the complex

plane; in an electromechanical directional relay, an operating current near this line will generate a maxi

mum amount of torque.

Maximum Torque Angle (MTA): the angle by which the Maximum Torque Line is rotated from the Polariz

ing Voltage.

The following diagram specifically shows the phasors involved for phase A directional polarization, but the gen

eral principles can be applied to all directional elements.

Why are the prices of many products of our company more competitive?
(1) Source purchase to reduce the price difference in the intermediate phase
(2) Stable channel and more guaranteed supply
Lead time problem
(1) For the spot products in stock, the de

livery can be arranged on the same day after the contract payment is signed
(2) Order products and deliver according to the quoted delivery date
Xiamen Xiongba adheres to the enterprise philosophy of “improving the value of spare parts supply chain”,
For the simple purchase procedure of spare parts, ensure that they are delivered to the site in a timely manner, and help users reduce the risk of downtime caused by the shortage of spare parts
The emergency spare parts support service is complete, and the user can customize the spare parts. The quality of the spare parts is reliable. All the spare parts provided enjoy a one-year super long warranty
Spot stock, fast response, reduce user capital investment, improve spare parts utilization, spare parts replacement!

Details: If you need urgent delivery orders, please feel free to contact us, and we will try our best to meet your needs.
Price problem: If you find that other suppliers offer cheaper prices for the same product, we are also willing to provide you with reference prices and give you further discounts.
Contact us:+86 181 0693 7731
Mail: 2872270648@qq.com
Contact: Chen