Trip Settings - S&C PureWave SMS-250 Installation Manual

Trip Settings

The PCS will trip under the conditions shown in Table 1.
Table 1. Default Trip Settings
Default Limits
<0 .5 Vnom
0 .5 Vnom ≤ V < 0 .88
Vnom
1 . 1 Vnom ≤ V < 1 .2
Vnom
1 .2 Vnom ≤ V
Frequency, 60 Hz
Obtain approval from the authority having jurisdiction before adjusting these setpoints . During abnormal voltage or
frequency conditions or in response to a detected unintentional islanding, the system will open the ac circuit breaker .
In case of a short circuit on the output of the PCS, the current and duration contribution from the PCS is explained in Table 2.
Table 2. Ac Output Short-Circuit Contribution
Short-circuit current — initial: amps (rms) and duration of 16 .7 ms or 1 cycle
Short-circuit current — maximum: amps (peak) and duration (ms)
Short-circuit current — breaking: amps (RMS) and duration (ms)
Short-circuit current — initial: amps (rms) and duration of 16 .7 ms or 1 cycle;
Short-circuit current — maximum: amps (peak) and duration (ms)
Short-circuit current — breaking: amps (RMS) and duration (ms)
Short-circuit current — initial: amps (rms) and duration of 16 .7 ms or 1 cycle;
Short-circuit current — maximum: amps (peak) and duration (ms)
Short-circuit current — breaking: amps (RMS) and duration (ms)
The PCS is set to trip in the unbalance conditions stated in Table 3.
Table 3. Unbalance Conditions
Output Measured (V) Output Measured (V)
368 .6
352 .5
356 .44
358 .46
357
355 .93
355 .87
357 .17
357 .89
357 .84
Default Limits
Nominal Value
380 V 190 V
380 V 334 V
380 V 418 V
380 V 456 V
60 Hz 60 ±1 .5 Hz
Condition
Output Measured (V)
368 .2 367 .6
351 .74 351 .86
355 .54 355 .67
358 .43 358 .19
357 .27 356 .98
356 .15 355 .87
355 .87 355 .73
356 .9 356 .76
357 .57 357 .48
358 .62 358 .37
Trip Time (Sec.)
0 . 1 6
2
1
0 . 1 6
0 . 1 5
NOTICE
Short L1 - L2
1612 .4 A(rms)
Short L1 - L3
1110 .3 A(rms)
1570 A(peak)
Short L2 - L3
1354 .3 A(rms)
1915 A(peak)
Output Freq
(Hz)
60 .01
60
60
60
59 .999
59 .999
59 .999
59 .999
59 .999
59 .999
Safety Information
Adjustable Range
Value Trip Time (Sec.)
150-370 V
150-370 V
390-532 V
390-532 V
60 ±2 .5 Hz
Amps Duration
16 .68 ms
2280 A(rms) 16 .68 ms
0 Arms
0 A(rms)
16 .55 ms
16 .55 ms
0 A(rms)
Output Power (kW) Current unbalance (%)
0
25
45
66
90
108
138
200
240
285
S&C Instruction Sheet 659-555
0 . 1 -300
0 . 1 -300
0 . 1 -300
0 . 1 -300
0 . 1 -300
-
13 ms
13 ms
-
-
0 . 1 4
0 . 1 4
0 . 1 5
0 .02
0 .05
0 .04
0 .02
0 .08
0 .08
0 .09
5