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HCMT Traction > Underframe Equipment > Flashcards

Underframe Equipment Flashcards

1
Q

Generally …

What equipment do DMp and Mp cars have?

A

Pantographs

High Voltage equipment

Traction equipment

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2
Q

Generally…

What equipment do Tc and DT cars have?

A

Auxiliary Power Supply

Batteries

Air supply equipment

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3
Q

Where is Main Reservoir located?

A

B side of every car

Main Res pipe is continuous throughout train

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4
Q

What do the Surge Reservoirs do?

A

Supply compressed air to air bag suspension on every bogie (x2 per bogie)

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5
Q

What does the Brake Supply reservoir do?

A

Supplies compressed air to EP valves to charge the BCs on every car

No.1 end

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6
Q

What is the difference between Motor bogies and Trailer bogies?

A

Motor bogies have traction motors on each axle

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7
Q

What equipment do bogies have on them? (5)

A

Speed sensors

Primary and secondary suspension

Tread Scrubber (Tc Only)

1 Park Brake per axle (DMp, Mp and DT)

Park Brake Manual releases (DMp, Mp and DT)

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8
Q

Where is the Primary suspension?

A

Between bogie frame and axle

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9
Q

What does the primary suspension consist of?

A

rubber laminated springs

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10
Q

Where is the secondary suspension?

A

Between bogie frame and car body

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11
Q

What does the secondary suspension consist of?

A

Two air bags on each bogie

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12
Q

What do the air suspension ICs do?

A

Isolate the surge reservoirs for one bogie

Both bogies must be isolated

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13
Q

Where are the Sanders?

A

A and B side

Tc and DMp - No. 2 end only

Mp and DT - both ends

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14
Q

When do the sanders operate?

A

Automatically when BCU senses wheel slip

During EP braking

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15
Q

How is the sanding system tested?

A

Automatically by TMS

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16
Q

What kind of coupler does a HCMT have?

A

Semi-automatic Scharfenberg Coupler

On cab ends of train

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17
Q

What kind of coupling can a HCMT train do?

A

They can tow mechanically and pneumatically

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18
Q

How do you open the coupler cover?

A

unlock the locking mechanism

raise the cover

lock it in the open position

19
Q

What ICs are under the Coupler Cover?

A

Uncouple Device IC

Towing Unit IC

BP End Cock

MR End Cock

Horn IC

20
Q

Where are the BCM located?

A

A side of every car

21
Q

What is inside the BCM of EVERY car and what does it do?

A

5 ICs and BCU

BCU Controls the application and release of EP friction braking.

Controls air into the brake cylinders

22
Q

What are the 5 ICs in BCM?

A
  • Brake Supply IC
  • BC Bogie 2 IC
  • BC Bogie 1 IC
  • Tread Scrubber IC (Tc only)
  • Park Brake IC (not Tc)
  • Sanding Equipment IC
23
Q

Tc - Trailer Cab

What does the Towing Unit do?

Exam

A

Allows HCMT brake control to interface with other rolling stock via traditional BP connections during rescuing procedures

Brake Pipe!!!

24
Q

Tc - Trailer Cab

What does the transition coupler do?

A

Allows for connection to a locomotive for rescue purposes

25
Q

Tc - Trailer Cab, DT - Door Trailer

What is in the Auxiliary Power Supply Container?

A

Auxiliary Inverter

Medium Voltage (MV) Box

Battery Charger

26
Q

Tc - Trailer Cab, DT - Door Trailer

What does the Auxiliary Power Supply system do?

A

Converts 1500vDC to 415v 3-Phase AC

Supplies 415v 3-Phase AC to:
- BATH

27
Q

Tc - Trailer Cab, DT - Door Trailer

What does the battery Charger do?

A

Converts 415vAc to 110vDC

Charges batteries

Supplies 110vDC to the train

28
Q

Tc - Trailer Cab, DT - Door Trailer

What does each Battery Box contain?

A

80 cells

If there is a failure of one set the others can supply 110vDC to the trainline

29
Q

Tc - Trailer Cab, DT - Door Trailer

How long do the batteries supply emergency power?

A

2 hours

30
Q

Tc - Trailer Cab, DT - Door Trailer

What can the batteries do even after supplying emergency power for 2 hours?

A

They can still raise pantographs and restore normal functions

Even after being stabled for 2 weeks

31
Q

Tc - Trailer Cab

What is in the Air Supply Unit (ASU)? (4)

Exam

A

Main Air Compressor

Air Dryers

Filters

Backup Compressor Governor

32
Q

Tc - Trailer Cab

What is the ASUs purpose?

A

To maintain Main reservoir pressure within 850-1000kPa

33
Q

Tc - Trailer Cab

What does the Shore Equipment do?

Exam

A

For Downer to test electrically and/or pneumatically.

We don’t touch

Charges batteries!!
Exam

34
Q

DMp Car and Mp Car

What is in the BCM?

A

BCU and 5 ICs

BCU and ICs

  • Brake Supply IC
  • BC Bogie 2 IC
  • BC Bogie 1 IC
  • Park Brake IC
  • Sanding Equipment IC
35
Q

DMp Car

What is in the High Voltage (HV) Box? (2)

A

HSCB

Harmonic Wave Detection Device (HWDD)

36
Q

DMp Car

What is in the Variable Voltage and Variable Frequency Cabinet (VVVF)?

A

Two Traction Inverter Modules - one for each bogie

TCU

37
Q

DMp Car

What do the Traction Inverters do?

A

Convert 1500vDC to 3-Phase variable voltage and variable frequency for powering traction motors

38
Q

DMp Car

What does the Auxiliary Compressor do?

Exam

A

It is battery powered

It provides air for the pantograph when MR pressure is low

39
Q

DMp Car

When will the Auxiliary Compressor automatically raise the pantograph?

A

When there is insufficient MR pressure - below 700

When the car has been isolated from the MR system

40
Q

DMp Car vs Mp Car

what does the under frame Pantograph Isolating cock do?

A

On Mp Car it isolates flow of MR air to pantograph.

On a DMp car it won’t because of auxiliary Compressor. The compressor will kick in.

41
Q

Mp Car

What does the Medium Voltage (MV) Box do?

A

Maintains medium voltage - 415vAC that is produced by Auxiliary Inverters

42
Q

When does the trip lower?

A

Automatically when master control key ON and Tap ON

43
Q

What is the purpose of the High Voltage Box?

A

It powers the Traction and Auxiliary Power Supply (APS)

HCMT Traction (12 decks)

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