Heinrichs Messtechnik GmbH
OPERATING MANUAL TMU-W / UMC4
Page 35 of 118
5.
Electrical Connections UMC4
5.1
Mains connections and their protection classes
Auxiliary power
(1)
19 V to 36 V DC (nominal 24 V DC)
24 V AC
+ 5 %, − 20 %
50/60 Hz
90 V - 265 V AC
50/60 Hz
(1): For custody transfer operations, the transmitter is only available as a 24 VDC version.
Power input
4.5 VA
Main fuse:
5x20 mm IEC 60127-2
Main voltage
rated Current
rated voltage
breaking capacity
19V ... 36V DC
250mAT
250V AC
1500A / 250V AC
24V AC
250mAT
250V AC
1500A / 250V AC
90V ... 265V AC
250mAT
250V AC
1500A / 250V AC
Table 5: Fuse properties
Fuse Type: Little Fuse Series 0215.250 HXP
Wiring diagrams
Terminal Designation of the Power connections
Transmitter Type
Pin designation
Ex Type of protection
Standard
Ex ec
None
(Protected by
Ex db)
(Non Ex)
UMC4
L, N and PE
x
x
UMC4-RM
L, N and PE
x
x
Table 6: Power Terminals Designation
On DC Voltage devices, L represents the “
+
” and N the “
-
“ of the supply lines.
Power connection terminals UMC4
Power connection terminals UMC4-RM
UMC4 Fuse holder
