Campbell-scientific CS10-L and CS15-L Current Transformers Manuale Utente Scaricare il pdf (Pagina 13)

CS10-L and CS15-L Current Transformers

Remember that it is important to get complete cycles. For Instruction 23, if

parameters 5 and 6 are 2.0 and 0.05, respectively, then you get five complete

cycles for a 50-Hz waveform, and six complete cycles for a 60-Hz waveform

(see Figure 4). The multiplier for the CS10 is 0.2; see Section A.4 for more

information.

Six Cycles at 60 Hz Burst CR10X

I Instanteneous

FIGURE 4. Graph of CS10 waveform using burst mode

The following CR10X program generates the waveforms shown in Figure 4.

The instructions listed below do not store data in final storage.

P92, P77, and output processing instructions such as P70 are

required to store the data permanently.

NOTE

; Parameter 2 should be 2500 mV for 50-200 amps

; should be 250 mV for 5-49 amps

; should be 25 mV for 0-4.9 amps

; Parameter 5 should be 2.0 msec for 50 Hz or 60 Hz

; Parameter 6 should be 0.05 thousand scans for 50 Hz or 60 Hz

; if parameter 5 & 6 are 2.0 and 0.05, then you have 5 complete cycles at 50 Hz

; or 6 complete cycles at 60 Hz.

;

1: Burst Measurement (P23)

1: 1 Input Channels per Scan ; Should always be 1

2: 15 2500 mV Fast Range ; Change according to expected Amperage

3: 1 In Chan ; Change according to Wiring

4: 0001 Trig/Trig/Dest/Meas Options ; Should always be 0001

5: 2.0 Time per Scan (msec) ; Must be 2.0

6: .05 Scans (in thousands) ; Must be 0.05 (for 50 measurements * 2.0 msec = 100 mS)

7: 0 Samples before Trigger ; Should always be 0

8: 0.0 mV Limit ; Should always be 0

9: 0000 mV Excitation ; Should always be 0

10: 4 Loc [ Amps_1 ] ; First location of Block (array)

11: .2 Multiplier ; Match Multiplier of CT:0.2 for CS10-L with 10 ohm shunt

12: 0.0 Offset

2: Z=F x 10^n (P30)

1: 0.0 F

2: 00 n, Exponent of 10

3: 1 Z Loc [ Counter ]

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 ... 29 30

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Campbell-scientific CS10-L and CS15-L Current Transformers Manuale Utente Pagina 13