GE IS200TSVCH2A MARK VI terminal board

Description

GE General Electric Technical Specifications: IS200TSVCH2A

The 750/760 provides the ability to operate selected auxiliary relays after an adjustable interval for the quanti

IS200TSVCH1A ties shown below. Pulses occur at the end of each programmed interval. Upon power up of the relay the Pulse

Output function, if enabled, will continue from where it was at loss of control power. For example, if control

power is removed when the positive watthours actual value is 16.0 MWh, when control power is re-applied a

IS200TSVCH1A pulse will occur at 26 MWh if the interval is set to 10.0 MWh.

Note that the Output relay(s) used for this element must be set to Self-Resetting under S4 OUTPUT RELAYS. The

pulses will consist of a one second on time and a one second off time. This feature should be programmed

such that no more than one pulse per two seconds will be required or the pulsing will lag behind the interval

activation.

All setpoints contained under page S5 PROTECTION are reproduced in four groups, identified as Groups 1, 2, 3

and 4. These multiple setpoints provide the capability of both automatic and manual changes to protection set

IS200TSVCH1A tings for different operating situations. Automatic (adaptive) protection setpoint adjustment is available to

change settings when the power system configuration is altered. By monitoring the state of a bus tie breaker

on the bus connected to the associated feeder breaker, you may use different settings depending on whether

the tie breaker is open or closed. Automatic group selection can be initiated by use of a logic input. The manual

adjustment capability is available for those users who use different settings for different seasons of the year.

Manual group selection can be initiated from the keypad or via communications.

In order to allow the display and editing of one group while another group is used for protection, two operating

states have been assigned to setpoint groups. The ‘Active’ group is used for protection, and is indicated by the

appropriate faceplate LED indicator being turned on continuously. The ‘Edit’ group is displayed and may be

used to alter protection settings. It is indicated by the appropriate faceplate LED indicator being flashed. If a

single group is selected to be both the Active and Edit group, the appropriate indicator is on continuously.

The setpoint group to be edited can only be selected by setpoint. Group 1 is the default for the active group

and will be used unless another group is requested to become active. The group to become active can be

selected by setpoint or by logic input. If there is a conflict in the selection of the active group, between a set

point and logic input or between two logic inputs, the higher numbered group will be made active. For example,

if the logic inputs for group 2, 3, and 4 are all asserted the relay would use group 4. If the logic input for group

4 then becomes de-asserted, the relay will use group 3. Any change from the default group 1 will be stored in

the event recorder.

In some application conditions, the user may require that the relay will not change from the present active

group. This prevention of a setpoint group change can be applied when any of the overcurrent (phase, neutral,

ground, sensitive ground, or negative sequence), overvoltage, bus or line undervoltage, or underfrequency ele

ments are picked-up.

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