If problem is still not reso lved, consult the star te r manufacturer for servi cing.
Testing Silicon Control Rec tifiers (SCRs) in Cutler-Hammer® Solid-State Starters
To check for a shorted SCR refer to Steps 1-3 and F igure 47, Figure 48, and Figure 49.
Note: Do not megger (high volta ge in sulation test) the star t er.
1. Connect ohmmeter acr os s t erminals L1 and T1. Check t he resistance reading . Re sistance
reading should be great er than 10,000 ohms.
2. Connect ohmmeter acr os s t erminals L2 and T2. Check t he resistance reading . Re sistance
reading should be great er than 10,000 ohms.
3. Connect ohmmeter acr os s t erminals L3 and T3. Check t he resistance reading . Re sistance
reading should be great er than 10,000 ohms.
If the SCRs tested were not defective, but the problem persists, refer to Steps 4-8.
CAUTION CAUTION
!
Damage to the starter ma y result if wires are revers ed.
Click here for Figure 46 — Typical Benshaw, Inc. Sol id-State St arter (Internal View)