1. What Is a JP Cabinet? (integrated distribution box)
JP cabinet = Metering + Reactive Power Compensation + DistributionA three-in-one outdoor pad-mounted integrated distribution box, standard equipment for rural grid distribution areas. One cabinet performs three functions: energy metering, power factor correction and low-voltage outgoing distribution.
2. JP Cabinet Internal Components (4 Compartments)
| Compartment | Contents | Component |
|---|---|---|
| Metering Compartment | Energy Metering | CT + kWh Meter |
| Compensation Compartment | Power factor correction | Capacitors + Contactors + Controller |
| Outgoing Compartment | Low-Voltage Outgoing Feeders | Breakers + Outgoing Feeders |
| Incoming Compartment | Power Incoming Feed | Disconnect Switch + Busbars |
3. What the JP Cabinet Does (3-in-1)
- Metering: fitted with current transformers + a three-phase kWh meter to meter consumption in the distribution area
- Power Factor Correction: the capacitor compensation cabinet switches automatically, power factor ≥ 0.9
- Distribution: 2–4 low-voltage outgoing feeders, distributed to individual users
4. JP Cabinet Selection (by Transformer Capacity)
JP cabinet capacity and transformer matching:150A for 100kVA, 300A for 200kVA, 400A for 315kVA, 600A for 500kVA. Size the compensation capacity at 20–30% of the transformer rating.
5. JP cabinet ingress protection requirements (outdoor)
Outdoor floor-mounted, ingress protection ≥ IP54, stainless steel or powder-coated galvanized sheet enclosure, with rain hood + ventilation. Grounding resistance ≤ 4Ω.
FAQ FAQ
What is the difference between a JP cabinet and a GGJ?
JP = metering + compensation + distribution in one; GGJ = capacitor compensation cabinet only. JP has more functions.
Can a JP cabinet be used indoors?
Yes, but it is not cost-effective (wastes the outdoor protection), indoors use GGD + a separate metering cabinet.
How do you calculate the compensation capacity of a JP cabinet?
Transformer capacity × 20–30%. For example, 200kVA with 40–60kvar of capacitors.
How much does a JP cabinet cost?
Depending on capacity and configuration, about CNY 3,000–5,000 for 100kVA and about CNY 8,000–12,000 for 500kVA. Quote on drawing.
Related pages:Technical notes · Products · Industries · Resource center · FAQ · Get a quote