Current And Voltage Transformers; 4Mt And 4Mu Voltage Transformers - Siemens 8DA10 Series Installation And Operating Instructions Manual

Features
Mounting locations
Electrical data
Designation
Operating voltage kV
Rated voltage kV
Rated short-duration power-frequency
withstand voltage kV
Rated lightning impulse withstand voltage
kV
Rated voltage factor
Standard
861-9601.9 • INSTALLATION AND OPERATING INSTRUCTIONS • 8DA10 • Revision 11
10

Current and voltage transformers

10.1

4MT and 4MU voltage transformers

• According to IEC 61869-3
• Cast-resin insulated
• Inductive type
• Safe-to-touch due to metal enclosure
• On the busbar
• At the panel connection housing
Fig. 7: Voltage transformer installation (basic scheme)
① Busbar voltage transformer 4MT3
② Feeder voltage transformer 4MT7
(connection at panel connection housing)
Mounting locations Type
Busbar 4MT3
4MU4
Panel connection housing 4MU3
4MT7
4MT3
3.3 to 23.0
24.0
65.0
125.0
Un / 8h = 1.9
Un / continuous = 1.2
IEC
GOST
GB
③ Voltage transformer 4MU4 with
three-position disconnector
④ Feeder voltage transformer 4MU3
(not in the panel, connection via flexible
cable with plug size S2 at the panel
connection housing, and metal-enclosed
voltage transformer)
Remark
optionally with three-position
disconnector
external
directly plugged in
4MU4 4MT7
24.0 to 38.0 3.3 to 38.0
40.5 40.5
95.0 95.0
200.0 200.0
Un / 8h = 1.9 Un / 8h = 1.9
Un / continuous = 1.2 Un / continuous = 1.2
IEC IEC
GOST GOST
GB GB
Description
4MU3
3.3 to 38.0
40.5
95.0
200.0
Un / 8h = 1.9
Un / continuous = 1.2
IEC
GOST
GB
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