Description
GE General Electric Technical Specifications: IS200TRPAH2AHE
When current polarized, the GROUND CURRENT CT INPUT is used to determine sensitive ground current direction.
The IS200TRPAH2AHE polarizing current comes from a source CT measuring the current flowing from the ground return into the
neutral of a ground fault current source which is usually a transformer. The direction is Forward when the sen
sitive ground current is within ±90° of the polarizing current. Otherwise, the direction is Reverse. If the polariz
ing current is less than 5% of CT nominal then the direction defaults to forward.
IS200TRPAH2AHE Dual polarization provides maximum security and reliability. If the polarizing voltage magnitude is insufficient
then the current polarizing takes control. If the polarizing current magnitude is insufficient then the voltage
polarizing takes control. If neither voltage nor current polarizing is possible then the direction defaults to for
ward.
brand | Product Name | Product model | Order No |
GE Fanuc | Module card | IS200TRPAH2AHE | 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 |
If sensitive ground directional control with both voltage and current polarized
elements is desired, enter Dual. With this setting, both polarizing quantities
must agree that the operating current is in the reverse direction for the sensi
tive ground directional element to operate the selected output relays. If sensi
IS200TRPAH2AHE tive ground directional control with only the voltage polarized element is
desired, enter Voltage. If sensitive ground directional control with only the cur
rent polarized element is desired, enter Current.
This setting affects the voltage element only. As the system zero 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 nominal 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 appropriate for most solidly grounded
systems.
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