As businesses across East Africa invest in solar and battery storage, one component determines whether the system will perform reliably, efficiently, and safely over the long term: the PCS (Power Conversion System).
A PCS is the “engine room” of a commercial energy storage system. It controls how power flows between:
- Battery packs (DC)
- Solar PV (DC)
- The grid (AC)
- Your facility loads (AC)
In this article, we explain why a Modular PCS (100kW / 125kW / 135kW) is a smart choice for factories, hospitals, hotels, farms, and commercial facilities—and what technical features matter most when selecting one. PCS-LEG-100K125K135K-TL-P
What Is a PCS (Power Conversion System)?
A PCS is a bi-directional inverter designed for battery energy storage systems (BESS). It performs two critical functions:
- Charging the battery (converting AC power to DC power)
- Discharging the battery (converting DC power back to AC power)
This makes it the core technology behind:
- Peak load shifting (bill reduction)
- Backup power supply (business continuity)
- Solar self-consumption optimization
- Microgrid operation (grid-tied and off-grid)
In short: your battery cannot support real commercial loads without a properly sized and engineered PCS.
Why Modular PCS Is Better for Commercial & Industrial Sites
Modern commercial sites demand scalability, serviceability, and redundancy. A modular PCS architecture is designed to deliver exactly that.
1) DC Wide Voltage Design (Better Battery Compatibility)
This PCS supports a DC voltage range of 650–950V, making it suitable for high-voltage lithium battery banks commonly used in C&I systems. PCS-LEG-100K125K135K-TL-P
This wide voltage window improves:
- operational stability
- charging flexibility
- system efficiency across different battery SOC levels
2) High Efficiency (Up to 98.5%)
Efficiency directly impacts operating cost and ROI.
This modular PCS is designed with an advanced three-level topology and achieves a maximum efficiency of up to 98.5%. PCS-LEG-100K125K135K-TL-P
That means:
- less energy wasted as heat
- better usable output from your solar + battery system
- improved performance during continuous daily cycling
3) Supports Multi-Unit Parallel Connection (Easy Expansion)
As your business grows, your power needs increase.
This PCS supports multi-unit parallel connection, allowing you to scale capacity without redesigning the full system from scratch. PCS-LEG-100K125K135K-TL-P
Ideal for:
- expanding factories
- additional office blocks
- growing cold storage and refrigeration loads
- future EV charging integration
Power Ratings: 100kW vs 125kW vs 135kW PCS (Which One Fits?)
This PCS series comes in three commercial power classes: PCS-LEG-100K125K135K-TL-P
LEG-100K-TL-P
- Rated power: 100kW
- Max power: 110kVA
- Max output current: 159A
LEG-125K-TL-P
- Rated power: 125kW
- Max power: 138kVA
- Max output current: 198A
LEG-135K-TL-P
- Rated power: 135kW
- Max power: 149kVA
- Max output current: 215A
All models support 3-phase 230/400V (3/N/PE) and 50/60Hz, making them suitable for standard commercial distribution networks. PCS-LEG-100K125K135K-TL-P
On-Grid + Off-Grid Capability (True Hybrid Performance)
One major advantage of this PCS is that it supports both:
✅ AC Side (On-Grid)
For grid-connected battery storage operations such as:
- peak shaving
- load shifting
- solar self-consumption
- demand control
✅ AC Side (Off-Grid)
For backup power applications where your facility must continue operating even during outages.
It also supports:
- 110% long-term overload operation
- 100% unbalanced load capacity
- THDu <3% (@ linear load) for clean output power quality PCS-LEG-100K125K135K-TL-P
This is especially important for:
- hospitals
- hotels
- data centers
- critical production lines
Built-In Protections That Matter in Real Installations
Commercial systems must handle harsh electrical conditions, switching surges, and operational stress.
This PCS includes key protection functions such as: PCS-LEG-100K125K135K-TL-P
- DC reverse connection protection
- AC short circuit protection
- Grid monitoring
- Islanding protection
- Surge protection
These protections reduce risk and improve system uptime.
Communication & Monitoring (Microgrid-Ready)
For modern commercial energy systems, monitoring and control is not optional—it’s essential.
This PCS supports:
- RS485 / CAN
- MODBUS-RTU / TCP communication protocols PCS-LEG-100K125K135K-TL-P
This allows integration with:
- Energy Management Systems (EMS)
- SCADA monitoring
- Smart meters and power analyzers
- Hybrid PV + BESS controllers
The brochure also highlights microgrid application support across multiple site types, including base stations, factories, farms, hospitals, and hotels. PCS-LEG-100K125K135K-TL-P
Cooling, Environment & Installation Considerations
This unit uses air cooling, with a working range of:
- -30°C to +55°C (derating above 45°C)
- 0–95% humidity (non-condensing)
- up to 4000m altitude (derating above 2000m) PCS-LEG-100K125K135K-TL-P
It is rated IP20, meaning it is intended for indoor electrical room installation or inside protected enclosures/containers.
Where This PCS Delivers the Best Value (Use Cases)
A modular PCS is ideal for commercial clients looking for:
1) Peak Shaving & Load Shifting
Reduce electricity bills by discharging batteries during peak tariff periods.
2) Backup Power for Business Continuity
Keep critical loads running during outages without relying fully on generators.
3) Solar + Storage Optimization
Store excess solar energy during the day and use it at night or during demand peaks.
4) Microgrid & Hybrid Power Systems
Enable stable energy control for mixed power sources: grid + solar + battery + generator.
Conclusion: A PCS Is Not Just an Inverter—It’s the Control Center of Your Energy Storage System
For any serious commercial solar + battery project, choosing the right PCS determines:
- system reliability
- safety and protections
- efficiency and energy savings
- scalability for future expansion
- quality of power delivered to your loads
A 100kW–135kW modular PCS is an excellent backbone for commercial energy storage deployments in East Africa, especially for businesses that need both on-grid savings and off-grid backup performance. PCS-LEG-100K125K135K-TL-P
Contact Us
Reliable Solar & Energy Storage Solutions for East Africa
Tel: +254 712 172 222 | +254 784 323 222
Email: info@solarman.co.ke
Website: www.solarman.co.ke
