| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 48<\/td>\n | Foreword <\/td>\n<\/tr>\n | ||||||
| 51<\/td>\n | 1 Scope 2 Normative references 3 Terms and definitions <\/td>\n<\/tr>\n | ||||||
| 52<\/td>\n | 4 Mechanical features <\/td>\n<\/tr>\n | ||||||
| 53<\/td>\n | Table 1 \u2014 Dimensions and spacing of fixing holes and terminals <\/td>\n<\/tr>\n | ||||||
| 54<\/td>\n | Figure 1 \u2014 Spacing of fixing holes and terminals for single-phase, two-wire meter <\/td>\n<\/tr>\n | ||||||
| 55<\/td>\n | 5 Electrical features Table 2 \u2014 Standard currents for meters of Class A or Class B <\/td>\n<\/tr>\n | ||||||
| 57<\/td>\n | Figure 2 \u2014 Diagrams of connections for a single-phase, two-wire, one-rate meter <\/td>\n<\/tr>\n | ||||||
| 58<\/td>\n | Figure 3 \u2014 Diagrams of connections and graphical symbols for a two-element meter used on three-wire systems <\/td>\n<\/tr>\n | ||||||
| 59<\/td>\n | Figure 4 \u2014 Diagrams of connections and graphical symbols for a two-element meter used on a two-phase, four-wire system <\/td>\n<\/tr>\n | ||||||
| 60<\/td>\n | Figure 5 \u2014 Diagrams of connections and graphical symbols for a three-element meter used on a three-phase, four-wire system <\/td>\n<\/tr>\n | ||||||
| 61<\/td>\n | 6 Other features <\/td>\n<\/tr>\n | ||||||
| 62<\/td>\n | Annex A (normative)\u2002 Test method of a terminal’s ability to safely clamp standard UK cables <\/td>\n<\/tr>\n | ||||||
| 63<\/td>\n | Figure A.1 \u2014 Test arrangement for clamping ability of a meter terminal <\/td>\n<\/tr>\n | ||||||
| 64<\/td>\n | Annex B (normative)\u2002 External rate switching logic for multi-rate meters Table B.1 \u2014 Sequence for multi-rate registers having two to eight rates <\/td>\n<\/tr>\n | ||||||
| 65<\/td>\n | Annex C (normative)\u2002 Long-term overcurrent test requirements <\/td>\n<\/tr>\n | ||||||
| 66<\/td>\n | Annex D (normative)\u2002 Performance criteria for load switches inside meters Table D.1 \u2014 Performance criteria for supply control and load control switches <\/td>\n<\/tr>\n | ||||||
| 67<\/td>\n | Figure D.1 \u2014 Polyphase meter supply control switch test timing <\/td>\n<\/tr>\n | ||||||
| 68<\/td>\n | Figure D.2 \u2014 Contact resistance derived from mV drop measured at meter terminals at Imax <\/td>\n<\/tr>\n | ||||||
| 69<\/td>\n | Annex E (normative)\u2002 Sealing criteria <\/td>\n<\/tr>\n | ||||||
| 70<\/td>\n | Annex F (informative)\u2002 Operational considerations related to switches inside meters <\/td>\n<\/tr>\n | ||||||
| 71<\/td>\n | Figure F.1 \u2014 Typical heating in a 100 AImax meter when subjected to 1.45 * Imax <\/td>\n<\/tr>\n | ||||||
| 72<\/td>\n | Table F.1 \u2014 Thermal stresses on a 100 A SCS protected by various OCPD ratings <\/td>\n<\/tr>\n | ||||||
| 73<\/td>\n | Table F.2 \u2014 Characteristics of OCPDs in common domestic use in the UK <\/td>\n<\/tr>\n | ||||||
| 74<\/td>\n | Figure F.2 \u2014 Current levels for determining OCPD characteristics <\/td>\n<\/tr>\n | ||||||
| 76<\/td>\n | Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Tracked Changes. Specification for special design and other features of alternating current watthour meters for active energy for use in the UK (Accuracy Classes A and B)<\/b><\/p>\n |