Section 11 in The Orissa State Electricity Board (General Conditions of Supply) Regulations, 1995
11. Consumer's apparatus.
(a)Low tension consumers - Low tension consumers shall, in all cases and at their cost provide a safety device in the form of linked quick break main switch and a main fuse on each phase other than the earthed neutral. The switch shall be fixed within one meter of the meter Board/meter box supplied by the Board or the consumer, as the case may be, or in such other position as may be approved by the Engineer.(b)High tension consumer - High tension consumer (i) requiring a supply of 1000 KW and above shall instal at his cost suitable circuit breakers of approved make with sufficient rupturing capacity as specified by the Board on the H. T. incoming side of his load, fitted with automatic overload protective devices, so adjusted that the circuit breakers supplied by the consumer operate before terminal circuit breaker/isolating apparatus of the Board activate ; (ii) requiring a supply up to 1000 KW shall provide on the H. T. incoming side of his load, a gang operated triple pole isolating switch of approved make with high tension fuses of fast blowing characteristics or circuit breaker of adequate rupturing capacity which should be so adjusted that they blow off before the overload protective devices in the Board's terminal circuit breaker/isolating apparatus operate.(c)No HT consumer shall install extra High Tension (EHT)/High Tension (HT) switch gear or apparatus and layout thereof without prior permission of the Supply Engineer.(d)Use of star-star transformers or delta-star transformers in the HT installation of consumer - H. T. consumers shall ordinarily instal step-down transformers having vector group with winding connected in delta on high voltage side and star on low voltage side.(e)Supply to the consumer nay be cut off if the wirings, apparatus, equipments or installations are found to be defective at any time or if the consumer uses any apparatus or appliance or uses the energy in such manner so as to endanger the service-lines, equipments, electric supply mains and other works of the Board or interferes with the efficient supply of energy to other consumers. If the Engineer considers that the continuance of supply may be injurious to the Board's installation or shall pose a danger to any other consumer/person, he shall disconnect the supply after giving 48 hours' notice to the consumer.(f)No pump sets for irrigation pumping and agricultural purposes shall be connected to the power supply system of the Board unless the pump sets and the installation thereof have shunt capacitors and current limiting device and satisfy following guidelines :(i)The agricultural pumping system will be equipped with Monoblocks having ISI mark or pumps and Motors of proper HP having ISI mark. The minimum efficiency of the Mono-block pump set should be 50 per cent and in the case of other pump sets, the pump efficiency shall not be less than 60 per cent. Efficiency of pump sets shall be taken to be the ratio of its output to the input.(ii)The selection of proper HP of the pump set will be governed by the guidelines issued under ISS-10804-1986.
