Type B Vital Relays - Alstom

Installation
Table 3–2. B Relay Installation Procedure
Step
Procedure
1 Verify the relay cover and seal are not damaged.
2 Verify the surfaces of the relay prongs that engage with the terminals in the
plugboards are clean and not bent.
While the relay prongs are clean and adjusted when they leave the factory, they
may become dirty or bent during storage and handling.
• If prongs are dirty, clean by burnishing.
• If prongs are bent, bend them back into position so the make contact when
the relay is installed.
3 Select the proper relay by checking the order reference number provided on the
nameplate on the front of the relay. This number also appears on the detailed
plans furnished with the installation and on the plugboard registration plate.
REGISTRATION
PLATE NUMBER
NAME
PLATE
NAMETAG
4 Slide the relay Nametag into slot.
TEST DATA
FORM
P1457, Rev. Nov/07 3–3 Alstom Signaling Inc.