Woodward SEG PCM1 Series, Руководство по установке

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TD_PCM1x_Packages_Installation_09.04_GB 17
b.)
Mains (Mains Current Measuring Via Transformer)
L2
L3
L1
N
GCB
S1
s1
S2
s2
MCB
G
Mains current
../1A or ../5 A
s1 (k)
27
28
s2 (l)
L1
Figure 5-6: Measuring inputs - Current - Mains – via transformer
Terminal Measure-
ment
Description A
max
27 Mains current L1, transformer terminal s2 (l) 2.5 mm²
28
Transformer
../1A o.
../5A
Mains current L1, transformer terminal s1 (k) 2.5 mm²
Table 5-6: Terminal assignment - mains current measuring
c.)
Mains (Mains Interchange Import/Export Real Power Actual Value Via Measuring Transducer)
NOTE
During configuration the free configurable 20 mA inputs can be provided with the following functions:
•
Mains interchange (import/export) real power actual value,
•
Real power setpoint value or
•
Alarm input.
Please notice the details in the configuration manual.
NOTE
If several controls are connected to form an interconnection, the 20 mA measuring signal must not be looped through
all controls. At each control, a 0/4-20 mA buffer amplifier must be connected to the mains interchange (import/export)
real power actual value measurement. When selecting the external measuring transformer, please note that this has to
transmit negative ranges on transmission of supply and reference power.
Measuring transducer
MCB GCB
Mains active power
0/4..20 mA
27
28
G
L2
L3
L1
N
+
-
Figure 5-7: Measuring inputs - Current - Mains – via measuring transducer
Terminal Measure-
ment
Description A
max
configurable 0/4-20 mA
Mains interchange (import/export) real power actual
value via 0/4-20 mA signal of an external measur-
ing transducer (e.g. UMT 1)
1.5 mm²
Table 5-7: Terminal assignment - mains current measuring