Hitachi PV-250 - User Manual

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SM 4574F

1000 Technology Drive, Pittsburgh, PA 15219

645 Russell Street, Batesburg, SC 29006

PV-250 Track Relay

(60 Hz, 115-Volt Local)

STS USA Part No.

N342555809

N342555909

♦ Installation

♦ Operation

♦ Maintenance

Main Page

Table of Contents5
Introduction9
Shock Indicators9
Description9
General9
Coils9
Contacts9
Specifications10
Electrical10
Mechanical10
Table 1-1. Mechanical Specifications10
Installation11
General11
Care in Handling11
Mounting Base11
Relay Indexing11
Figure 2-1. Typical Plug-In Relay and Mounting Base12
Receptacle Contact Springs13
Old-Style Base Only13
Improved One-Piece Base Only13
Installing Wires in Receptacle Contact Springs14
Figure 2-2 - Receptacle Contact Springs Installed14
Table 2-1. Crimping Tools14
Relay Insertion15
Maintenance17
Periodic Performance Test17
Cleaning17
Service Requirements17
Calibration17
Recommended Test Equipment17
Shop Calibration Test Procedure18
Figure 3-1. AC Vane Relay Test Circuit20
Table 3-1. Shop Test Operating Values @ 70-74°F20
Table 3-2. Operating Values at Ideal Phase Relations20
In-Service and Field Calibration Test Procedure21
Contact Resistance23
Table 3-3. In-Service and Field Calibration Operating Values23
Table 3-4. Contact Assignments23
Table 3-5. Contact Resistance (Ohms)23
Shop Maintenance24
Cleaning and Inspection24
Recommended Cleaning Materials24
Contact Cleaning Procedure25
Contacts that Are Severely Burned25
Contacts with Heavy Tarnish, Slightly Rough or Pitted Surface25
Contacts with Surface Film or Oxidation (Not Pitted)25
Check-Out Procedure (Performance Test)25
Repairs, Replacement and Adjustment of Relay Components25
Recommended Tools and Test Equipment26
Vane Removal26
Vane Installation27
Figure 3-2. Adjustment of Heel Spring Clips28
Contact Block Replacement and Adjustment29
Figure 3-3. Method of Closing in of Lower Heel29
Figure 3-4. Application of Bending Tools29
Contact and Counterweight Adjustment Procedure30
Figure 3-5. Table Torque Arm32
Test for Balanced Magnetic Circuit34
Figure 3-6. Inspecting Loose Counterweights and Loose Trunnion Screw Locknuts34
Parts List37
PV-250 Track Relay (N342555-809 and N342555-909)37
Table 4-1. Parts List for the PV-250 Track Relay, 60 Hz37
Figure 4-1. PV-250 Relay Typical Top Assembly (N342555-809)39
Contact Block Assemblies (N433482)40
Figure 4-2. Contact Block Assemblies40
Table 4-2. Contact Block Arrangement40
Table 4-3. Contact Block Assembly Parts List40
Relay Mounting Base Assembly (N438689-003 and N434647)41
New Style Mounting Base (N438689-003)41
Table 4-4. New Style Mounting Base Parts List41
Figure 4-3. New Style Mounting Base Assembly (N438689-003)42
Old Style Mounting Base (N434647)43
Table 4-5. Old Style Mounting Base Parts List43
Figure 4-4. Old Style Mounting Base Assembly (N434647)44
Rail Team and Technical Support45

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Hitachi PV-250 Specifications

General

Brand	Hitachi
Model	PV-250
Category	Relays
Language	English

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