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PE-9(2) PE · Physical and Environmental Protection

Automatic Voltage Controls

LOW MODERATE HIGH
1 Overlay 0 Related Controls
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Requirements NIST SOURCE

Employ automatic voltage controls for [critical system components].

Discussion (NIST Supplemental Guidance)

Automatic voltage controls can monitor and control voltage. Such controls include voltage regulators, voltage conditioners, and voltage stabilizers.

Implementation Guidance

Engineering Interpretation

Original engineering commentary written for this explorer — not NIST source text and not authoritative guidance.

No engineering interpretation has been authored for PE-9(2) yet. This section is architected to receive it — see the Requirements and Assessment sections above for the authoritative NIST source content in the meantime.

Assessment

NIST SP 800-53A REV 5.2.0

Assessment Objectives

  1. the critical system components that require automatic voltage controls are defined;
  2. automatic voltage controls for <PE-09(02)_ODP critical system components> are employed.

Examine

[SELECT FROM: Physical and environmental protection policy; procedures addressing voltage control; security plan; list of critical system components requiring automatic voltage controls; automatic voltage control mechanisms and associated configurations; system security plan; other relevant documents or records].

Interview

[SELECT FROM: Organizational personnel with responsibilities for environmental protection of system components; organizational personnel with information security responsibilities].

Test

[SELECT FROM: Mechanisms supporting and/or implementing automatic voltage controls].

Overlays

Showing the OT/ICS overlay for the parent control PE-9 — see the PE-9(2) entries within each baseline below.

OT/ICS Overlay SP 800-82r3

NIST SP 800-82r3 Appendix F, Table 22. Blank baseline means the control/control enhancement is not selected in that initial OT baseline.

LOW

Not applicable at this tier.

MODERATE

  • Base control: Included (matches standard baseline)

HIGH

  • Base control: Included (matches standard baseline)

STIGs & CCIs

No STIG checks or CCI mappings are currently loaded for PE-9(2). This section is architected to display, per product: STIG ID, Finding ID, Severity, Title, Description, Check, Fix, CCI, and NIST control mapping — but nothing is populated here until a real DISA STIG/CCI dataset is ingested.

Learn more about STIG/CCI integration →

Evidence

Potential Evidence — Derived

Categorized from the SP 800-53A "Examine"/"Test" artifact list above by keyword — not an authoritative NIST evidence list.

Policy

  • Physical and environmental protection policy
  • security plan
  • system security plan

Testing

  • Mechanisms supporting and/or implementing automatic voltage controls

Other Records

  • procedures addressing voltage control
  • list of critical system components requiring automatic voltage controls
  • automatic voltage control mechanisms and associated configurations
  • other relevant documents or records