Larsen & Toubro U-POWER Omega UW-MTX 1.5G, User Manual

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Protection Settings for UW-MTX1.0/1G/1Gi/1.5G/1.5Gi
5.3 Detailed Overview
5-4
Protection: Enable/Disable Enable
Pick-Up (Ir)= In x …for I2T 1
Delay (tr) in s
12
Pre-alarm
Thermal Memory ON/OFF OFF
Protection: Enable/Disable Disable
Pick-Up I
N
= Ir x …
-
-
50%
Pre-alarm
-
Delay (tr) in s
-
-
-
-
-
-
-
-
Protection: Enable/Disable Enable
I2T ON/OFF OFF
OFF
Pick- Up, Is = In x…
6In
Delay (ts) 400ms
Pre-alarm
0.6In
1
Protection: Enable/Disable
Pick -up (Ip)=In x…
Protection: Enable/Disable
Disable
Enable
I2T: ON/OFF
Pick- Up (Ig)
= In x…
I2T OFF (tg)
I2T ON (tg)
Pre-alarm
Instantaneous
Earth Fault
0.1-0.2-0.3-0.4-1
0.1-0.2-0.3-0.4
OFF-0.2-0.3-0.4-0.5-0.6
Overload (Neutral)
50%-100%-150%-200%
Same as Overload Phase
Short Circuit 0.6-1-1.5-2-3-4-6-8-10-12
OFF-1.5-2-3-4-6-8-10-12-15
20-100-200-300-400 ms
Factory Settings
Overload (Phase)
OFF- 0.4-0.5-0.6-0.7-0.8-0.85-0.9-0.95-1
0.5-1-2-4-6-12-18-24-30
0.9Ir (fixed)
0.5Is (fixed)
0.8Ig (fixed)
0.8I
N
(fixed)
Parameter
MTX1.0
MTX1.0G
MTX1.5G
-
-
-
10 In
10
x
x
x
Breaker Rating Plug Settings for UW-MTX1.0/1G/1Gi/1.5G/1.5Gi
Note: This symbol indicates that DIP Switch is ON and indicates that DIP Switch is OFF.
CAUTION
Mismatch between actual breaker rating and setting on
the P&C unit will result in error in Protection
Parameters & current measurement displayed .
MTX1Gi MTX1.5Gi
Inbuilt-ZSI
Short Circuit Enable/Disable
Earth Fault Enable/Disable
-
- -
- -
-
x x
Disable
Disable