Description
GE General Electric Technical Specifications: IS200TRPAH1A
This setting affects the voltage element only. As the system zero sequence
IS200TRPAH1A 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
IS200TRPAH1A 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.
| brand | Product Name | Product model | Order No |
| GE Fanuc | Module card | IS200TRPAH1A | 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 sensitive ground directional feature controls the operation of all sensitive ground overcurrent elements and
IS200TRPAH1A allows them to discriminate between forward or reverse faults. Refer to Section 12.2: DIRECTIONAL OVER
CURRENT CHARACTERISTICS on page 12–6 for more details on directional principles. Sensitive ground
directional can be either voltage, current, or dual polarized. The sensitive ground current input is always the
operating current.
When voltage polarized, the polarizing quantity is the zero sequence voltage which is calculated from the bus
input voltages. The VT CONNECTION TYPE must be Wye in this case. If the polarizing voltage drops below the
MINIMUM OPERATING VOLTAGE setting the direction defaults to forward. The following table shows the operating
current and polarizing quantities used for sensitive ground directional control.
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