Multi-User Concentrated Meters
- One meter for multiple users
- Up to 36 single-phase or 12 three-phase outlets
- Postpaid and prepaid options
- Remote reading and remote control
- Computer vending or RF-card vending
- Live view of each user’s consumption
- SMS reminder to purchase energy
- Suitable for apartments, dormitories and building renovation
Product Overview
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Wanfang multi-user concentrated meters put several users into one unit. One meter can be set as up to 36 single-phase users or 12 three-phase users. Mixed single-phase and three-phase outlets are also possible within the 36-line limit.
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A building can be networked by RS485. Buildings can be linked by LAN. Energy can be sold from a computer or by RF card. The two methods can be used together.
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Cabinet sizes cover 12, 24 and 36 users.
| Model | Payment | Users | Cabinet | Difference |
|---|---|---|---|---|
| DDSH550 Postpaid | Postpaid | Up to 36 single-phase or 12 three-phase | — | Central reading; RS485; isolated CT/VT sensing |
| Smart 36-user | Postpaid or prepaid | Up to 36 lines | 615 × 327 × 128 mm | Types 80 / 84 / 85 / 93; remote control; computer or RF-card vending |
| Smart 24-user | Postpaid or prepaid | 13–24 users | 435 × 327 × 128 mm | Same functions as 36-user; smaller cabinet |
| Smart 12-user | Postpaid or prepaid | Up to 12 users | 249 × 327 × 128 mm | Same functions as 36-user; smallest cabinet |
DDSH550 Postpaid Concentrated Meter

Postpaid concentrated meter for central reading. Suitable for old-building and rural-grid renovation.
- Per-user metering with centralized reading
- Compact size and lower installation cost
- Current and voltage transformers for isolation
- RS485 for remote reading and computer networking
- Calibration input and output terminals
- Three-phase four-wire input; single-phase or three-phase output
- Up to 36 single-phase users or 12 three-phase users
| Item | Specification |
|---|---|
| Accuracy | Class 1.0 / Class 2.0 |
| Working voltage | 200V–250V |
| Current | 5(20)A, 10(40)A, 15(60)A, 20(80)A |
| Operating temperature | -20℃ to +55℃ |
| Relative humidity | ≤85% |
| Power consumption | <5VA |
Smart Meter, 36 Users

Concentrated smart meter for up to 36 lines. One unit can serve a building, a staircase or one floor.
- Cabinet for 25–36 users: 615 × 327 × 128 mm
- Remote reading and remote control; RS485 in a building, LAN between buildings
- Computer vending or RF-card vending; both methods can be used together
- Live view of each user’s consumption
- SMS reminder to purchase energy
- Single-phase and three-phase user counts can be mixed within 36 lines
- Dual-line LED display cycles meter info, user number and energy
- Type 80: forward counting, postpaid
- Type 84: postpaid, remote control, maximum-load limit
- Type 85: prepaid remote control, disconnect on unpaid energy, low-balance alarm, maximum-load limit
- Type 93: three circuits for student dormitories; each user uses three outlets as a three-phase supply
- Direct-connect meter: Class 1.0, up to 36 lines
- CT-connect meter: Class 0.5S, up to 24 lines
Direct-connect
| Item | Specification |
|---|---|
| Rated voltage | AC 3×220/380V |
| Accuracy | Class 1.0 |
| Current | 5(20)A, 10(40)A, 15(60)A, 20(80)A |
| Meter constant | 5(20)A: 1800imp/kWh; 10(40)A and 15(60)A: 900imp/kWh; 20(80)A: 400imp/kWh |
| Energy resolution | 0.1 kWh |
| Maximum outlets | 36 lines |
| Operating temperature | -25℃ to +55℃ |
CT-connect
| Item | Specification |
|---|---|
| Rated voltage | AC 3×220/380V |
| Accuracy | Class 0.5S |
| Current | 1.5(6)A |
| Meter constant | 5000imp/kWh |
| Energy resolution | 0.01 kWh |
| Maximum outlets | 24 lines |
| Operating temperature | -25℃ to +55℃ |
Smart Meter, 24 Users

Same functions as the 36-user smart meter. Cabinet for 13–24 users: 435 × 327 × 128 mm.
- Cabinet for 13–24 users: 435 × 327 × 128 mm
- Remote reading and remote control; RS485 in a building, LAN between buildings
- Computer vending or RF-card vending; both methods can be used together
- Live view of each user’s consumption
- SMS reminder to purchase energy
- Single-phase and three-phase user counts can be mixed within 36 lines
- Dual-line LED display cycles meter info, user number and energy
- Type 80: forward counting, postpaid
- Type 84: postpaid, remote control, maximum-load limit
- Type 85: prepaid remote control, disconnect on unpaid energy, low-balance alarm, maximum-load limit
- Type 93: three circuits for student dormitories; each user uses three outlets as a three-phase supply
- Direct-connect meter: Class 1.0, up to 36 lines
- CT-connect meter: Class 0.5S, up to 24 lines
Direct-connect
| Item | Specification |
|---|---|
| Rated voltage | AC 3×220/380V |
| Accuracy | Class 1.0 |
| Current | 5(20)A, 10(40)A, 15(60)A, 20(80)A |
| Meter constant | 5(20)A: 1800imp/kWh; 10(40)A and 15(60)A: 900imp/kWh; 20(80)A: 400imp/kWh |
| Energy resolution | 0.1 kWh |
| Maximum outlets | 36 lines |
| Operating temperature | -25℃ to +55℃ |
CT-connect
| Item | Specification |
|---|---|
| Rated voltage | AC 3×220/380V |
| Accuracy | Class 0.5S |
| Current | 1.5(6)A |
| Meter constant | 5000imp/kWh |
| Energy resolution | 0.01 kWh |
| Maximum outlets | 24 lines |
| Operating temperature | -25℃ to +55℃ |
Smart Meter, 12 Users

Same functions as the 36-user smart meter. Cabinet for 12 users or fewer: 249 × 327 × 128 mm.
- Cabinet for 12 users or fewer: 249 × 327 × 128 mm
- Remote reading and remote control; RS485 in a building, LAN between buildings
- Computer vending or RF-card vending; both methods can be used together
- Live view of each user’s consumption
- SMS reminder to purchase energy
- Single-phase and three-phase user counts can be mixed within 36 lines
- Dual-line LED display cycles meter info, user number and energy
- Type 80: forward counting, postpaid
- Type 84: postpaid, remote control, maximum-load limit
- Type 85: prepaid remote control, disconnect on unpaid energy, low-balance alarm, maximum-load limit
- Type 93: three circuits for student dormitories; each user uses three outlets as a three-phase supply
- Direct-connect meter: Class 1.0, up to 36 lines
- CT-connect meter: Class 0.5S, up to 24 lines
Direct-connect
| Item | Specification |
|---|---|
| Rated voltage | AC 3×220/380V |
| Accuracy | Class 1.0 |
| Current | 5(20)A, 10(40)A, 15(60)A, 20(80)A |
| Meter constant | 5(20)A: 1800imp/kWh; 10(40)A and 15(60)A: 900imp/kWh; 20(80)A: 400imp/kWh |
| Energy resolution | 0.1 kWh |
| Maximum outlets | 36 lines |
| Operating temperature | -25℃ to +55℃ |
CT-connect
| Item | Specification |
|---|---|
| Rated voltage | AC 3×220/380V |
| Accuracy | Class 0.5S |
| Current | 1.5(6)A |
| Meter constant | 5000imp/kWh |
| Energy resolution | 0.01 kWh |
| Maximum outlets | 24 lines |
| Operating temperature | -25℃ to +55℃ |
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