Hitachi 152SO, Installation & Operation Manual, Page: 5 / 36

PN-152SO Switch Overload Relay
Copyright 2019 SM 5929 Rev. 23, March 2019 iii
Table of Contents
1. INTRODUCTION ............................................................................................................................... 1-1
1.1. Introduction ............................................................................................................................... 1-1
1.2. Shock Indicators ....................................................................................................................... 1-1
1.3. Mechanical Specifications ........................................................................................................ 1-2
1.4. Electrical Specifications ............................................................................................................ 1-2
2. INSTALLATION ................................................................................................................................. 2-1
2.1. General ..................................................................................................................................... 2-1
2.2. Mounting Base .......................................................................................................................... 2-1
2.3. Relay Indexing .......................................................................................................................... 2-1
2.4. Receptacle Contact Springs ..................................................................................................... 2-2
2.4.1. Old-Style Base Only (N398314) ................................................................................... 2-2
2.4.2. Improved One-Piece Base Only (N451376-0302) ........................................................ 2-2
2.4.3. Installing Wires in Receptacle Contact Springs ............................................................ 2-3
2.5. Relay Insertion .......................................................................................................................... 2-4
3. FIELD MAINTENANCE ..................................................................................................................... 3-1
3.1. Introduction ............................................................................................................................... 3-1
3.2. Periodic Performance Test ....................................................................................................... 3-1
3.2.1. Cleaning ........................................................................................................................ 3-1
3.2.2. Service Requirements .................................................................................................. 3-1
4. SHOP MAINTENANCE ..................................................................................................................... 4-1
4.1. Adjustment and Calibration....................................................................................................... 4-1
4.1.1. Operating Relay ............................................................................................................ 4-1
4.1.2. Stick Relay .................................................................................................................... 4-1
4.1.3. Preliminary Calibration .................................................................................................. 4-2
4.1.4. Internal Wiring ............................................................................................................... 4-3
4.1.5. Final Calibration ............................................................................................................ 4-3
4.1.6. Service Recommendations ........................................................................................... 4-5
5. TECHNICAL SUPPORT .................................................................................................................... 5-1
6. PARTS LIST ...................................................................................................................................... 6-1
6.1. PN-152SO Relay (Complete) ................................................................................................... 6-1
6.2. PN-152SO PARTS LIST (Unit “A”) ........................................................................................... 6-5
6.3. PN-152SO Parts List (Unit “B”) ................................................................................................. 6-8
6.4. PN-152SO Base and Test Plugs Parts List .............................................................................. 6-9
6.5. Parts List For New Mounting Base For PN-152SO Relays .................................................... 6-11
List of Figures
Figure 2-1. Typical Plug-in Relay and Mounting Base .............................................................................. 2-1
Figure 2-2. Receptacle Contact Springs Installed .................................................................................... 2-3
Figure 4-1. Circuit for Preliminary Calibration ........................................................................................... 4-2
Figure 4-2. Wiring, Facing the Front of the Relay ..................................................................................... 4-3