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Commercialpedia Indian Railways commercial circulars and policies

Sealing arrangement for Loco Kavach equipment

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TypeCommercial Circular
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Summary

Before switching ON Loco Kavach, Loco Pilot (LP) shall ensure that equipments

Text of the circular

Sealing arrangement for Loco Kavach equipment
&
Loco Kavach system working (All type of locos)
CLI-06

Sealing arrangement for Loco Kavach equipment

Sealing arrangement for Loco Kavach 
equipment
●
The loco pilot must check the intactness of Kavach equipment and sealing
arrangement at the time of taking charge, before switching ON the Kavach
system, because it ensures that the Kavach equipment is in proper condition
and not being tempered with.
●
If the equipment is tampered with, damaged, or malfunctioning, it could result
in system failure on run, which could lead to troubles during working.

Sealing arrangement for Loco Kavach 
equipment
●
Before switching ON Loco Kavach, Loco Pilot (LP) shall ensure that equipments 
like Loco Kavach unit, Brake Interface Unit (BIU) and Driver Machine Interface 
(DMI) are in properly sealed condition. If the seal is found broken / tampered, the 
Loco Kavach is to be treated as Defective. LP shall intimate / inform respective 
loco shed and concerned Traction Loco Controller (TLC) / Power Controller 
(PRC) that the sealing of Loco Kavach is broken and it is defective.

Sealing arrangement for Loco Kavach 
equipment

Loco Kavach system working (All type of 
locos).

Switch ON Procedure
SN
Procedure
1.
Switch On the Kavach Power MCB. Ensure Leading/Non-Leading switch on LP-OCIP of both CABs 
incase of Locomotives in Leading Position.
2.
Keep Kavach Isolation switch in “Normal” position.
3.
Operate the Pneumatic Cocks.
•IRAB: Keep MR and EM cocks in Open Position.
•E-70: Keep EM Cocks of Both CABs in Open Position. Further IRU Bypass Switch of Active CAB IRU in 
Normal Position.
•CCB 2.0: Keep EM Cock in CAB1 in Open Position.
•EMU Conventional: Keep MR Cock OFF and EM Cock in Open Position.
•Three Phase EMU: Keep EM Cock in Open Position.
•VandeBharat: Keep EM Cock in Open Position. 
4.
Loco Pilot needs to Activate the LP Desk with BL Key or Reverser Key and Kavach performs Brakes 
Functional Test. If Successful prompts for selecting Train Configuration.
5.
If Brake Functional Test Fails, LP can re-test or Isolate the Kavach System 
6.
Until LP selects SR/SH mode, Onboard Kavach will be in Standby(SB) mode.
7

Switch OFF Procedure
SN
Procedure
1.
Keep Kavach Isolation switch in “Isolate” position.
2.
Operate the Pneumatic Cocks.
•IRAB: Keep MR and EM cocks in Close Position.
•E-70: Keep EM Cocks of Both CABs in Close Position. Further IRU Bypass Switch of Active CAB IRU in 
Bypass Position.
•CCB 2.0: Keep EM Cock in CAB1 in Close Position.
•EMU Conventional: Keep MR Cock Open and EM Cock in Close Positions.
•Three Phase EMU: Keep EM Cock in Close Position.
•VandeBharat: Keep EM Cock in Close Position. 
3.
Switch OFF power MCB.
8

Start of Mission for all types of Locos

Start of Mission: Standby Mode - Brakes Testing
●
After selection of Desk or CAB, 
○
TCAS will perform brake test to 
ensure brakes (BIU) functionality

Brakes Testing Success
●
Brakes testing Success

Start of Mission: Standby Mode -Entering Train 
Configuration 
•
Train Type Selection & reconfirmation
to
be
done
using
Up/
Dn
arrows
followed by Enter (soft keys) on DMI.

Train Type Selection (Ver 3.2)
Press Configure button using Up/Down
arrows followed by Enter in DMI

Train Type Selection (Ver 3.2) 
Light Engine is selected, with types

Train Type Selection(Ver 3.2) 
Reconfirming the selection

Train Type Selection(Ver 3.2) 
Goods/Freight is selected

Train Type Selection(Ver 3.2) 
Goods/Freight Train Type 
selected

Train Type Selection(Ver 3.2) 
Reconfirming the selection

Train Type Selection(Ver 3.2) 
Passenger
Train is selected

Train Type Selection(Ver 3.2) 
Passenger Train is selected, with types

Train Type Selection(Ver 3.2) 
Reconfirming the selection

Train Type Selection (Ver 4.0)
using Up/Down arrows followed by Enter 
in DMI

Train Type Selection (Ver 4.0)
Using Up/Down arrows followed by Enter 
in DMI

Train Type Selection (Ver 4.0)
using Up/Down arrows followed 
by Enter in DMI

Train Type Selection (Ver 4.0

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