Low prices! Originals & Translations! Save your budget and time!
ONLINENORMS: Online Standards Store
Click View Shopping Cart
  1. Home
  2. NR
  3. NR NR/L3/ELP/27240/NR/DIST C25E ISSUE 2 PDF

NR NR/L3/ELP/27240/NR/DIST C25E ISSUE 2 PDF

NR NR/L3/ELP/27240/NR/DIST C25E ISSUE 2 PDF

Name:
NR NR/L3/ELP/27240/NR/DIST C25E ISSUE 2 PDF

Published Date:
03/01/2017

Status:
[ Active ]

Description:

Maintenance Instruction for Changing the Main Pull off Springs on a Whipp & Bourne MM 74 High Speed dc Circuit Breaker

Publisher:
Network Rail

Document status:
Active
Format:
Electronic (PDF)
Delivery time:
10 minutes
Delivery time (for Russian version):
200 business days
SKU:
Choose Document Language:
$5.7
Need Help?
NR/L3/ELP/27240/NR/DIST C25E

Includes: This instruction details the procedure for changing the main pull off springs on a Whipp & Bourne MM74 High Speed Circuit Breaker. It also covers the inspection and procedure for changing the offset of the front main contact carrier.

The main pull off springs are located on the main contact mechanism. Their function is to provide sufficient force to open the main contacts, under fault conditions. With the circuit breaker closed, i.e. the contacts making, the springs are under tension. If the springs were to fail there is no force pulling the contacts apart, thus rendering the circuit inoperable.


Edition : 2
File Size : 1 file , 120 KB
Number of Pages : 5
Published : 03/01/2017

History

Related products

NR NR/CIV/SD/1414 ISSUE C
NR NR/CIV/SD/1414 ISSUE C
Published Date: 12/03/2016
D-Type Underbridges: Steelwork General Assembly: Square Composite Floor
$5.7
NR T60037 ISSUE 2
NR T60037 ISSUE 2
Published Date: 10/07/2005
Lineside & On Track Equipment Typical Circuits Signals Position Light Signal (Associated with Main Aspect). Acc: Relay Interface Location Case Circuit
$5.7
NR NR/L2/OHS/CP0070 ISSUE 6
NR NR/L2/OHS/CP0070 ISSUE 6
Published Date: 12/03/2022
Principal Contractor Licensing Assurance (formerly NR/L2/INI/CP0070)
$18.6
NR NR/L2/TRK/7014/04 ISSUE 1
NR NR/L2/TRK/7014/04 ISSUE 1
Published Date: 03/05/2022
Standardised Risk Based Maintenance Regime (RBM) for the Inspection and Maintenance of the Permanent Way: Switches and Crossings - Dynamically Recorded Geometry
$13.2

Best-Selling Products

ABMA 10-1989
ABMA 10-1989
Published Date: 06/05/1989
Metal Balls
ABMA 11:1990 (R2008)
ABMA 11:1990 (R2008)
Published Date: 06/17/1990
Load Ratings and Fatigue Life for Roller Bearings
ABMA 11:2014 (R2020)
ABMA 11:2014 (R2020)
Published Date: 2014
Load Ratings and Fatigue Life for Roller Bearings
$16.5
ABMA 12.1:1992 (S2020)
ABMA 12.1:1992 (S2020)
Published Date: 04/06/1992
Instrument Ball Bearings - Metric Design
$16.5
ABMA 12.2:1992 (S2020)
ABMA 12.2:1992 (S2020)
Published Date: 04/06/1992
Instrument Ball Bearings - Inch Design
$16.5
ABMA 13:1987 (S2010)
ABMA 13:1987 (S2010)
Published Date: 09/02/1987
Rolling Bearing Vibration and Noise (Methods of Measuring)