Detailed Product Description

Mechanical Meter

DD949 single phase long-life type meter is used for measuring electric power in single-phase 50Hz or 60Hz AC circuit. It should be fixed to use within the limited working temperature -30~+55°C and the relative humidity of not exceeding 95%, without the corrosive gas and salty spray in the air. It is manufactured by long-life design technique, which has passed the stable life of 25 years' test of China Electrical Industrial Institute Electric Equipment and Meter Quality Inspection Center as well as the KEMA certification.

Structure:
1. Case: steel base or bakelite base, AS or PC transparent cover, terminal BL °Ck with 4 impulse output terminals
2. Bearing: Al, Ni, Co magnetic bearing
3. Register: wheel type, five or six digitals, adjusted low friction designed wheels
4. Rotational component: complete unit of worm and shaft, double graphite bush
5. Frame: complete unitary steel frame or molded aluminum alloy frame
6. Braking component: Al. Ni. Co double pole magnet, adjusting board is used to adjust magnetism
7. Driving component: unitary rivet type voltage steel core, handle type light load adjustment, revolving phase plate type phase adjustment
8. Voltage coil: adopts dipping paint or encapsulating with epoxy resin to insure good performance against humidity and insulation
9. Current connector and current circuit adopt double screw connection or double rivet connection
10. It is designed as per the most advanced technical with reasonable construction, beautiful appearance, stable and reliable performance, low consumption, high overload (6.67 times) and long life

Technical parameter:
1) Accuracy class: class 2
2) Reference voltage: 110V, 120V, 220V, 230V, 240V
3) Frequency: 50Hz or 60Hz
4) Basic (max. rated) current: 4 times meter: 1.5 (6) A, 2.5 (10) A, 5 (20) A, 10 (40) A, 15 (60) A, 20 (80) A, 30 (120) A; 6 times meter: 2.5 (15) A, 5 (30) A, 10 (60) A, 15 (90) A, 20 (120) A
5) Voltage circuit consumption: ≤1W, 6VA
6) Current circuit consumption: 2.5VA
7) Basic rotating speed: 12.28r/min for 4 times meter 9.9r/min for 6 times meter
8) Torque: 4.5x10-4 N.m
9) Weight of meter: 1.4kg