mpec SA380-IT, Руководство пользователя

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Accuracy +/- 1 k Z < 20 k
L
+/- 5 % * Z
L
>= 20 k
Alarm Value 1 k to 1 M
Factory Alarm Value 50 k
120 k
DC Circuits
AC Circuits
Fixed Hysteresis +5% AC and DC circuits
Standard Response Time (per circuit) T
R
1.1 s Typical
Actual Response Time (per circuit) T
R
(Assumes static impedance to earth)
(750,000 x C ) + 0.3
E
seconds
Product Response Time T
R
X Number of Circuits in Operation Typical
System Leakage Capacitance (C
E
)
(per circuit)
0.1 F
100 F
Min.
Max.
Factory Set Max. Leakage Capacitance (C
E
)
1 F per circuit
*See section 2.5 for an explanation of measurement accuracy with regard to the insulation resistance of DC monitored circuits.
*Accuracy de-rated to -5% to +6% in the presence of strong radiated EM fields at 20 V/m at 800 MHz to 1 GHz and 10 V/m at 1.4 GHz
to 2 GHz.
A typical mobile digital telecommunications device must be placed within 20 mm of the SA380-IT enclosure to experience these
levels.
Measuring Circuit
Measuring Voltage +/- 46 V
Measuring Current < 700 A
Internal Resistance & Impedance > 45 k no resistive cable fitted
System Resistance & Impedance > 70 k resistive cable fitted
Measuring Circuit is only connected to a
single Monitored Circuit at any one time
Internal System Check Frequency Every 30 s
Earth Loop Circuit
Measuring Voltage +/- 3.5 V Max.
Measuring Current < 500 A
System Resistance & Impedance > 25 k FE to SE
Tolerance to Stray Interference Voltage +/- 500 mV pk. Max.
Measurement Range 0 to 2 k
Accuracy +/- 0.5 R
E
< 10
+/- 5 % R
E
>= 10
Alarm Value 0 to 2 k
Factory Alarm Value 1 k
Fixed Hysteresis +5%
Output Ports