diff --git a/app/Filament/Imports/MotorTestingMasterImporter.php b/app/Filament/Imports/MotorTestingMasterImporter.php
index 28a3cbe1..9f02b01c 100644
--- a/app/Filament/Imports/MotorTestingMasterImporter.php
+++ b/app/Filament/Imports/MotorTestingMasterImporter.php
@@ -315,7 +315,7 @@ class MotorTestingMasterImporter extends Importer
                 if (Str::length($frequency) <= 0 || ! is_numeric($frequency)) {
                     $warnMsg[] = 'Invalid frequency found';
                 }
-                if (Str::length($connection) <= 0 || ($connection != 'Star-Delta' && $connection != 'Star' && $connection != 'Delta')) {
+                if (Str::length($connection) <= 0 || ($connection != 'Star-Delta' && $connection != 'Star' && $connection != 'Delta' && $connection != 'CSR' && $connection != 'CSCR' && $connection != 'CSIR')) {
                     $warnMsg[] = 'Invalid connection found';
                 }
                 if (Str::length($insResLimit) <= 0 || ! is_numeric($insResLimit)) {