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Technical guide

Humanitarian Solar: NEUTRON Protection Scope for Zaatari Camp Solar

Solar power at the Zaatari refugee camp supports essential services such as water pumping, lighting and community facilities. NEUTRON supplied the DC protection on the array side and the residual-current protection on the AC side, with the battery and inverter integrated by the operator.

NEUTRON Engineering TeamUpdated September 15, 20266 min readTechnical application guidance
Low-rise community buildings beside a small ground-mounted solar array and a utility cabinet
Fig. 0 — Solar arrays and local utility equipment support the essential-service supply discussion.

Key takeaways

  • The DC-plus-AC protection approach removed shock-risk gaps and kept essential services stable through dusty seasons.
  • Treat headline ratings as an engineering input, then confirm the final configuration against the project drawings and applicable local requirements.
  • Keep the approved component list, critical interfaces and required test or document deliverables visible before production begins.

1. Solar for essential services

Camp solar pairs a PV array with storage and an inverter feeding local AC loads. Protection must be simple, safe and serviceable by non-specialist technicians.

2. DC side protection

  • A DC isolation switch at the array combiner for safe maintenance.
  • gPV fuses protecting each string against short circuit and reverse current.
  • A DC-rated SPD where lightning exposure is significant.

3. AC side: Type B RCBO

On the AC distribution board NEUTRON installed Type B RCBO units. Because the inverter can present smooth DC, a Type B device senses AC, pulsating DC and smooth DC, closing the shock-protection gap left by a Type A device.

DIN-rail distribution enclosure with residual-current and overcurrent modules, test buttons and separate neutral and protective-earth terminal strips
Fig. 1 — Residual-current modules and test buttons support the AC protection discussion; appearance alone does not establish a device's Type B capability.

4. Training and maintenance

  • Local operators trained to isolate the DC side before board work.
  • RCBO test buttons confirmed during commissioning.
  • Spare gPV fuses stocked locally.
Closed compact AC distribution board with orderly conduits in a clean utility room
Fig. 2 — A closed board and orderly conduit layout provide the installation context for operator maintenance.

5. Outcome

The DC-plus-AC protection approach removed shock-risk gaps and kept essential services stable through dusty seasons.

Project paths

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Engineering boundary

Final ratings, coordination, installation and applicable local requirements must be verified against current standards, manufacturer documentation and the approved project design.

Frequently asked questions

Why Type B RCD for camp solar?

The inverter can inject smooth DC that a Type A RCD cannot detect; Type B senses AC, pulsating DC and smooth DC.

What causes camp solar RCBO nuisance trips?

Humid mornings, array parasitic capacitance and mixed neutral-earth loops; correct sizing and clean earthing resolve most.

What can camp solar serve?

Depending on size, it can power water pumps, lighting, refrigeration and community facilities.

Which NEUTRON products fit?

DC isolator plus gPV fuse combiners, Type B RCBO or RCCB, coordinated DC SPD and a compact low-voltage distribution assembly.

Review the project protection scope.

Share the array layout, equipment interfaces and site conditions for a coordinated protection review.

Discuss a project
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NEUTRON Engineering TeamPower distribution and new-energy equipment for project-based export supply.

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Technical review note

PV protection equipment, installation conditions and maintenance considerations.