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Type B Vital Relays - Alstom

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Installation<br />

Table 3–4. Microchron II Timer Relay (DC) Surge Protection Installation Procedure<br />

Step<br />

Procedure<br />

1 Install an equalizer (<strong>Alstom</strong> P/N 56937-021-00) across the power leads ahead of<br />

where the leads will be wired to the Microchron II Timer Relay.<br />

REMOTE<br />

CONTACTS<br />

LOCAL<br />

CONTACTS<br />

6E 52 51 TE<br />

REMOTE<br />

SIGNAL BATTERY<br />

MICROCHRON II<br />

TIMER<br />

EQUALIZER<br />

PART NO. 56937-021-00 AND<br />

TERMINAL BLOCK 46048-022-08<br />

Electrical parameters of this equalizer are 1000 ohms minimum at 1.5 volts DC<br />

and breakdown range of 75 to 150 volts DC, not to exceed 150 volts DC.<br />

P1457, Rev. Nov/07 3–12 <strong>Alstom</strong> Signaling Inc.

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