Summing point overexcitation limiter, Takeover overexcitation limiter, Underexcitation – Basler Electric DECS-400 User Manual

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9369700990 Rev R

Summing Point Overexcitation Limiter

Three on-line setpoint levels ...... 1 (high), 2 (medium), and 3 (low). Limiter response is less than 3 cycles.
Setpoint Range

Level 1, 2, 3 ............................ 0 to 11,999 Adc

Setpoint Increment

Level 1, 2, 3 ............................ 0.1% of the rated field current

Limiting Time Range

Level 1 .................................... 0 to 60 s

Level 2 .................................... 0 to 120 s

Level 3 .................................... Indefinite

Limiting Time Increment

Level 1, 2 ................................ 1 s

Level 3 .................................... N/A

Two off-line setpoint levels ............ 1 (high) and 2 (low). Limiter response is less than 3 cycles.
Setpoint Range

Level 1, 2 ................................ 0 to 11,999 Adc

Setpoint Increment

Level 1, 2 ................................ 0.1% of the rated field current

Limiting Time Range

Level 1 .................................... 0 to 60 s

Level 2 .................................... Indefinite

Limiting Time Increment

Level 1 .................................... 1 s

Level 2 .................................... N/A

Takeover Overexcitation Limiter

Two on-line setpoint levels ............ High and Low. Limiter response is less than 3 cycles.

Setpoint Range

High, Low Level ................ 0 to 11,999 Adc

Setpoint Increment

High, Low Level ................ 0.1 Adc

Time Dial

Range ............................... 0.1 to 20 s

Increment ......................... 0.1 s

Two off-line setpoint levels ............ High and Low. Limiter response is less than 3 cycles.

Setpoint Range

High, Low Level ................ 0 to 11,999 Adc

Setpoint Increment

High, Low Level ................ 0.1 Adc

Time Dial

Range ............................... 0.1 to 20 s

Increment ......................... 0.1 s

Underexcitation

User-selectable, summing-point type or takeover limiter. UEL curve is selected by specifying the
acceptable reactive power level at zero active power output or by entering a five-point UEL characteristic.
UEL adjusts characteristic according to changes in generator terminal voltage.
Reactive Power

Setting Range ......................... 0 to 41 kvar (leading)

Setting Increment.................... 1 kvar

Real Power

Setting Range ......................... 0 to 41 kW

Setting Increment.................... 1 kW

Specifications

DECS-400

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