Chint DT862-4 three-phase four-wire electric meter

The Chint DT862-4 three-phase four-wire electric meter is a classic mechanical electric energy meter, specifically designed for industrial and commercial scenarios, and is suitable for the active electric energy metering of three-phase four-wire circuit. Ниже приводится основная информация и рекомендации по применению.:

1. Основные функции и технические параметры
2. Metering Characteristics

Measuring Range: It supports direct connection type (такой как 10(40)А, 15(60)А) and mutual inductance type (такой как 1.5(6)А), covering the load requirements of small and medium power.

Accuracy Class: Class 2, meeting the GB/T 15283-1994 стандартный, with an error range of ±2%.

Voltage Specification: 3×220/380V (line voltage 380V, phase voltage 220V), suitable for industrial power supply environments.

Frequency Range: 50Гц, in line with the domestic power grid standard.

2. Structural Design

Material: The shell is made of cold-rolled steel plate, with an IP30 protection level, dustproof and splash-proof.

Размеры: The external dimensions of the standard model are 279.5×172×124mm, and the installation hole spacing is 140×106mm, which is suitable for common power distribution cabinets.

Display: Mechanical counter, with the integer part displayed in a black frame and the decimal part displayed in a red frame, which is intuitive and easy to read.

3. Экологическая адаптивность

Рабочая температура: -10°C to +50°C (some models support -25°C to +55°C), adapting to different climatic conditions.

Влажность: Relative humidity ≤ 85%. Avoid long-term use in high humidity environments.

1. Application Scenarios and Installation Key Points
2. Типичные применения

Industrial Power Distribution: In scenarios where three-phase loads are concentrated, such as factories and workshops, to measure the total electricity consumption.

Коммерческие здания: In places that require phase-by-phase metering, such as shopping malls and office buildings.

Agricultural Irrigation: Suitable for equipment such as water pumps driven by three-phase motors.

2. Wiring Methods

Direct Connection Type: Suitable for circuits with a current ≤ 100A. The incoming live wires are connected to holes 1, 3, и 5, the outgoing wires are connected to holes 2, 4, и 6, and holes 7 и 8 are connected to the neutral wire.

Mutual Inductance Type: It needs to be matched with a current transformer (such as 200/5A). The incoming live wires are connected to holes 1, 3, и 5. The S1 of the secondary side of the current transformer is connected to holes 2, 4, и 6, the S2 is short-circuited and then grounded, and holes 7 и 8 are connected to the neutral wire.

Примечания:

– The transformation ratio of the current transformer needs to match the specification of the electric meter (например, а 1.5(6)A electric meter is matched with a 100/5A current transformer).

– Copper wires with a cross-sectional area ≥ 2.5mm² should be used for wiring to ensure reliable contact.

3. Installation Specifications

Vertical Installation: The electric meter needs to be vertically fixed, and the inclination ≤ 1° to avoid affecting the metering accuracy.

Spacing Requirements: Maintain a spacing of more than 50mm from other electrical components for easy heat dissipation and maintenance.

III. Purchase and After-sales Service

1. Price Reference
2. Suppliers in Hebei Region

Hebei China Electric

3. After-sales Service

Гарантийный срок: Usually 1 год, and some channels provide a 3-month warranty.

Fault Handling: In case of abnormal counting or a stuck dial, you can contact Chint, or submit an after-sales application through the official website.

1. Alternative Solutions and Extended Functions
2. Smart Upgrade Options

Electronic Electric Meter: Например, the DDSY666 type supports prepayment, RS485 communication, and remote meter reading, which is suitable for users who need intelligent management.

Multifunctional Electric Meter: The DT862-4K model integrates functions such as time-of-use billing and load recording, and supports the Modbus protocol.

2. Adaptation to Special Requirements

Outdoor Environment: Select the DT862-4 outdoor type with an IP54 protection level, which needs to be customized in advance.

High-precision Metering: If a Class 1 accuracy is required, the DS862-4 model (380В 1.5(6)А) can be considered.

1. Risk Control and Compliance
2. Qualification Verification

Certification: Require the supplier to provide a 3C certification and a type test report to ensure that the product meets the GB7251.1 standard.

Brand Anti-counterfeiting: The genuine electric meter shell is printed with a laser anti-counterfeiting label, and the serial number can be queried through Chint’s official website.

2. Contract Terms

Acceptance Standard: Clearly specify that it should be calibrated according to the JJG307-2006 regulation, and the error should be ≤ ±2%.

Transportation Insurance: It is recommended to purchase the wooden box packaging service, and the supplier shall bear the damage during transportation.

1. Typical Case

In the transformation of a factory’s power distribution system, a DT862-4 15(60)A direct connection type electric meter was adopted, matched with a Schneider NSX circuit breaker, to achieve real-time metering of three-phase loads. Purchased through a local distributor in Hebei, the total cost was reduced by 15% compared with direct purchase from the original factory. После установки, it was detected by a third party, and the error rate was +1.2%, which meets the national standard.

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