3. Protection
Current
Menu
Password
* * * *
Settings
Config Mode
View Mode
I1
I2
I3
: 0A
: 0A
: 0A
Settings
View Records
Metering
Set Group 1
I Protection
V Protection
Freq Protection
Note: Refer UW-MTX Release manual for the programming of further protections in detail.
Press
“SEL”
key in the
overlay
Select
“Settings”
by
SEL key
Select
“Config”
Mode”
Enter the password
“0000”
(Factory Set: default)
Password
Config Mode
MTX Unit
Protection
System Settings
Unit Settings
0 1 2 3
4 5 6 7
8 9
MTX Unit
Configurater
Modbus
Protection
Set Group 1
Set Group 2
Select
“MTX Unit”
in Config
Mode
Select
“Protection”
Select desired set group
as active.*
2
4
Overload :It’s a protection against over current. The characteristics provided are I t, I t
LI, SI, VI with Thermal memory. Thermal memory help to reduce the trip time of the
unit in case of recursions of overload.
Short Circuit :Excessive currents though the conductors can cause circuit damage ,fire ,explosion .
This protection prevents such conditions.
Directional SC :The protection is a short circuit protection with the ability to recognize the direction of the
phases current during the fault period. The current direction makes it possible to determine
whether the fault is on the supply or load side of the circuit-breaker. Particularly in ring
distribution systems, this makes it possible to identify and disconnect the distribution
feeder where the fault has occurred, whilst keeping the rest of the system running.
Instantaneous :This protection works as short circuit protection with no intentional time delay
which means release operates in 20milliseconds as soon as the fault current
exceeds the set pick-up.
Protections under I- protection:
6-7
Summary of Contents for U-POWER Omega UW-MTX 1.5G
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Page 12: ...Microswitch...
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Page 30: ...3 12 X X 100 150 mm X 100 150 mm X X 15 max...
Page 45: ...3 27 Termination Draw out Breakers THIS PAGE IS INTENTIONALLY LEFT BLANK...
Page 46: ...Termination Draw out Breakers 3 28 THIS PAGE IS INTENTIONALLY LEFT BLANK...
Page 71: ...3 53...
Page 83: ...4 1 4 1 Cradle Mounted Accessories...
Page 84: ...4 2...
Page 85: ...4 3...
Page 86: ...4 4...
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Page 89: ...4 7...
Page 90: ...4 8 4 2 Breaker Mounted Accessories...
Page 92: ...4 10...
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Page 97: ...Section 5 Protection Control units 5 1 Identification 5 2 Protection Characteristics...
Page 104: ...5 7 Protection Characteristics Overload I T for UW MTX1 0 2 0 1 1 10 100 1000 10000 10s...
Page 119: ...6 3 6 3 Testing Control circuit Interlocks if breaker is equipped with accessories...
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Page 136: ...7 7...
Page 142: ...Section 8 Useful Hints...