WordPress at a glance
action is not described

woocommerce_installed action-hook . WC 1.0

Usage

add_action( 'woocommerce_installed', 'action_function_name_2507' );
function action_function_name_2507(){
	// action...
}

Where the hook is called

WC_Install::install()
woocommerce_installed
woocommerce/includes/class-wc-install.php 319
do_action( 'woocommerce_installed' );

Where in WP core the hook is used WooCommerce

woocommerce/includes/admin/class-wc-admin-notices.php 52
add_action( 'woocommerce_installed', array( __CLASS__, 'reset_admin_notices' ) );
woocommerce/includes/wc-core-functions.php 2300
add_action( 'woocommerce_installed', 'wc_delete_expired_transients' );