Perfect Sales Corporation offers Oil Cooled / Dry Type Combined Metering Unit. Perfect Sales Corporation is an ISO 9001: 2000 accredited company supplying a wide range of electrical instrument transformers like Current Transformers, Potential Transformers, CT-PT Combined Units and Metering Cubicle. The Oil Cooled / Dry Type Combined Metering Unit is available in single phase and three phase configurations. The Oil Cooled / Dry Type Combined Metering Unit is suitable for both indoor and outdoor applications.