GE IS200TRPAS1A IS200TRPAS1AFD circuit board

Product name:
GE IS200TRPAS1A IS200TRPAS1AFD circuit board

Product model: IS200TRPAS1A

Quantity: inventory

Part No./PN: IS200TRPAS1A

Warranty: We provide warranty service for IS200TRPAS1A

Shipping Port:FuJian

Product technical documents: no relevant documents

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GE General Electric Technical Specifications: IS200TRPAS1A

Restricted Earth Fault protection is often applied to transformers having grounded wye windings, to provide

sensitive ground fault detection for faults near the transformer neutral. The Sensitive Ground Input (terminals

G3, H3) can be used.

Although the 750/760 is designed for feeder protection, it can provide Restricted Earth Fault protection on

IS200TRPAS1A transformers that do not have dedicated protection. To use the 750/760 for this type of protection, a stabilizing

resistor and possibly a non-linear resistor will be required.

The inclusion of a stabilizing resistor encourages the circulating fault current to flow via the magnetizing imped

IS200TRPAS1A ance of the saturated current transformer thus minimizing spill current in the REF relay. A non-linear resistor

will be required where the voltage across the inputs would be greater than 2000 volts. Refer to Section 3.2.7:

RESTRICTED EARTH FAULT INPUTS on page 3–10 for the connections required to use the 750/760 to per

form Restricted Earth Fault protection.


brand Product Name Product model Order No
GE Fanuc Module card IS200TRPAS1A nothing
Place of Origin Marketable land Imported or not defects liability period
Europe and America Nationwide and overseas yes a year
Place of shipment Delivery method How to use Applicable industries
Xiamen Shunfeng Express Commissioning and installation Power Plant Steel Plant Cement Plant Shipboard Papermaking
Service advantages Foreign import, goods preparation and supply Reasonable price and reliable quality Pictures are for reference only
Product features Primary source of goods, supply by model After sales guarantee Chen 1810693-7731


The IS200TRPAS1A negative sequence directional feature controls the operation of all negative sequence overcurrent ele

ments and allows them to discriminate between forward or reverse faults. Refer to Section 12.2: DIREC

TIONAL OVERCURRENT CHARACTERISTICS on page 12–6 for more details on directional principles. The

operating current and polarizing voltage is shown in the following table. If the polarizing voltage drops below

the ‘Minimum Operating Voltage’ setting the direction defaults to forward.

As the system negative sequence voltage is used as the polarizing voltage for

this element, a minimum level of voltage must be selected to prevent operation

caused by system unbalanced voltages or VT ratio errors. For well-balanced

systems and 1% accuracy VTs, this setpoint can be as low as 2% of VT nomi

nal voltage. For systems with high-resistance grounding or floating neutrals,

this setpoint can be as high as 20%. The default value of 0.05 x VT is appropri

ate for most solidly grounded systems.

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