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Understanding CAN CSA C22.2 No. 61010-2-202-18: Safety Requirements for Electrically Operated Valve Actuators
A comprehensive guide to the Canadian adoption of IEC 61010-2-202 for industrial automation and process control equipment
Introduction
CAN CSA C22.2 No. 61010-2-202-18 is a harmonized Canadian standard that adopts IEC 61010-2-202:2018 (Ed. 1.0) with specific Canadian deviations. It forms part of the CSA C22.2 series and provides particular safety requirements for electrically operated valve actuators used in measurement, control, and laboratory applications. This standard is essential for manufacturers, system integrators, and compliance engineers operating in the Canadian market, as it addresses electric shock, mechanical, thermal, and fire hazards unique to valve actuators in industrial process environments.
Scope and Application
The standard covers electrically operated valve actuators intended for industrial processes, including rotary (quarter-turn) and linear (multi-turn) types. It applies to actuators that are part of equipment under the scope of the parent standard CSA C22.2 No. 61010-1 (safety requirements for electrical equipment for measurement, control, and laboratory use).
Equipment Included
- Electric motor-driven actuators for valves, dampers, and similar control elements.
- Actuators with integral or separate control units (including positioners, limit switches, and fall-safe mechanisms).
- Actuators designed for indoor or outdoor installation in industrial environments.
Exclusions
- Hand-operated actuators without electrical parts.
- Actuators used in explosive atmospheres (covered by other standards such as CSA C22.2 No. 60079 series).
- Actuators performing safety functions as defined in IEC 61508/61511 (functional safety not covered).
Important: This standard does not cover functional safety integrity levels (SIL). For actuators used in safety instrumented systems, additional compliance with IEC 61508 or CSA C22.2 No. 61508 series is required.
Key Technical Requirements
CAN CSA C22.2 No. 61010-2-202-18 builds upon the general requirements of IEC 61010-1 and adds specific provisions for valve actuators. Below are the critical technical areas:
Electrical Safety
- Insulation coordination: Clearances, creepage distances, and solid insulation must comply with overvoltage category II or III (depending on mains connection).
- Protective bonding: Resistance between accessible conductive parts and protective earth terminal must be ≤ 0.1 Ω.
- Dielectric strength: Withstand voltage test of 2 × rated voltage + 1000 V (minimum 1500 V) for primary circuits.
Mechanical Hazards
- Moving parts: Guards or enclosures must prevent access to drive mechanisms, gears, and linkages during normal operation.
- Torque/force limitation: Actuators shall incorporate means to limit output torque or thrust to prevent damage to the valve or actuator.
- Enclosure strength: Enclosures must withstand impact of 2 J (IK 07) and support static loads per manufacturer specification.
Thermal Requirements
- Accessible surface temperature shall not exceed 70 °C under normal operation and 100 °C under single fault conditions (unless otherwise specified for high-temperature applications).
- Motors and power components must be protected against overheating (thermal cutout, impedance protection, or temperature sensing).
Environmental Conditions
The standard defines a minimum environmental capability for valve actuators, summarized in the table below:
| Parameter | Requirement (minimum) | Test condition |
|---|---|---|
| Ingress Protection | IP54 (typical for outdoor) – see note | Dust and water spray |
| Ambient temperature | -20 °C to +60 °C | Cold/heat exposure |
| Humidity | ≤ 95 % RH (non-condensing) | Damp heat cyclic |
| Vibration | 2 g @ 10–150 Hz | Resonance search and endurance |
| Altitude | Up to 2000 m | Low pressure/altitude test |
Note: Higher IP ratings (e.g., IP65, IP66, IP67) may be required for certain applications; these must be declared by the manufacturer and verified by testing.
Control Circuit Requirements
- Control circuits (e.g., 4–20 mA, digital I/O) shall be safely separated from mains circuits using basic insulation plus protective screening or double insulation.
- For actuators with digital communication interfaces, transient voltage protection and EMC requirements per CISPR 11/IEC 61000-6-2 apply.
Tip for designers: Use a clear physical separation (e.g., separate compartments or reinforced insulation) between power and control wiring to simplify compliance with clearance and creepage requirements.
Implementation and Testing Considerations
Successful compliance requires attention to design, testing, and documentation throughout the product lifecycle.
Design Phase
- Risk assessment: Per Clause 4 of IEC 61010-1, a hazard analysis must identify all applicable risks (electric shock, mechanical, thermal, fire).
- Material selection: Establish flame class V-1 or better for insulating materials (per IEC 60695-11-10).
- Wiring: Internal wiring must be rated for at least the maximum operating temperature; cross-sectional area based on current rating.
Type Tests (Verification)
Manufacturers must perform or witness the following type tests on a representative sample:
- Dielectric strength and leakage current measurement.
- Temperature rise test under rated load and duty cycle.
- Mechanical endurance (e.g., 10,000 cycles for standard actuators).
- Ingress protection and environmental conditioning.
- Abnormal operation tests (locked rotor, stalled valve, loss of phase).
Routine Tests (Production)
Every unit must pass a dielectric test and check of protective bonding resistance. Additional checks include correctness of torque/limit switch settings and labeling.
Compliance advantage: IEC 61010-2-202:2018 is widely accepted globally. Products tested to that standard generally meet CSA requirements with only minor modifications, such as marking adjustments or supplementary testing for Canadian deviations (e.g., supply voltage tolerances).
Compliance and Certification Notes
To legally sell valve actuators in Canada, manufacturers must certify their products to the applicable CSA standard. Key compliance aspects include:
Canadian Deviations
- Supply voltage: Canada typically uses 120/240 V with ±10 % tolerance; the standard requires equipment to function safely across this range.
- Service conditions: Ambient temperature may need to be rated for -30 °C for certain Canadian regions unless declared otherwise.
- Marking: Bilingual (English/French) hazard labels are mandatory; metric units must be provided where required.
Certification Process
CSA Group performs testing and certification under the CSA C22.2 program. Alternatively, recognized third-party NRTLs (e.g., UL, TÜV SÜD) can test to the same standard and issue certification recognized by SCC (Standards Council of Canada).
Marking Requirements
Each actuator must bear the following information:
- Manufacturer’s name or trademark
- Model/type designation
- Rated voltage, frequency, current
- IP degree of protection
- Ambient temperature range
- CSA certification mark (or accredited mark)
Non-compliance risk: Using uncertified valve actuators in Canadian industrial installations may void insurance, violate local electrical codes (e.g., CE Code Part I), and lead to legal liability in case of accident. Always verify the certification mark before installation.
Frequently Asked Questions
Q: What equipment is covered by CAN CSA C22.2 No. 61010-2-202-18?
A: It covers electrically operated valve actuators (rotary and linear) for industrial process control, including those with integral control electronics, limit switches, and emergency functions. Hand-operated or purely pneumatic/hydraulic actuators are excluded. Equipment intended for use in hazardous locations must also comply with the relevant CSA explosion-protection standards.
A: It covers electrically operated valve actuators (rotary and linear) for industrial process control, including those with integral control electronics, limit switches, and emergency functions. Hand-operated or purely pneumatic/hydraulic actuators are excluded. Equipment intended for use in hazardous locations must also comply with the relevant CSA explosion-protection standards.
Q: How does this standard relate to IEC 61010-2-202:2018?
A: CAN CSA C22.2 No. 61010-2-202-18 is an identical adoption of IEC 61010-2-202:2018 with specific Canadian national differences. These differences mainly concern supply voltage tolerances, temperature ratings for Canadian climates, and bilingual marking requirements. If your product complies with the international edition, only minor adjustments are typically needed for CSA certification.
A: CAN CSA C22.2 No. 61010-2-202-18 is an identical adoption of IEC 61010-2-202:2018 with specific Canadian national differences. These differences mainly concern supply voltage tolerances, temperature ratings for Canadian climates, and bilingual marking requirements. If your product complies with the international edition, only minor adjustments are typically needed for CSA certification.
Q: Are there any common Canadian deviations from the IEC version?
A: Yes. The most frequent deviations include: (1) rating for 120/240 V line-to-ground/line-to-line voltages; (2) an extended low-temperature range (-30 °C unless declared otherwise); (3) mandatory bilingual warning labels; (4) clarification on compliance with the Canadian Electrical Code (CE Code) for field wiring. These are documented in a separate “Canadian Deviations” appendix in the standard.
A: Yes. The most frequent deviations include: (1) rating for 120/240 V line-to-ground/line-to-line voltages; (2) an extended low-temperature range (-30 °C unless declared otherwise); (3) mandatory bilingual warning labels; (4) clarification on compliance with the Canadian Electrical Code (CE Code) for field wiring. These are documented in a separate “Canadian Deviations” appendix in the standard.
Q: Is periodic re-testing required after initial certification?
A: CSA certification requires annual factory inspections and follow-up testing (routine tests) to ensure ongoing compliance. Type tests are not repeated unless design changes affect safety. Manufacturers must maintain a quality control program (such as ISO 9001) and allow auditors access to production and test records.
A: CSA certification requires annual factory inspections and follow-up testing (routine tests) to ensure ongoing compliance. Type tests are not repeated unless design changes affect safety. Manufacturers must maintain a quality control program (such as ISO 9001) and allow auditors access to production and test records.
© 2026 Compliance Standards Review. All rights reserved. This article is for informational purposes and does not constitute legal or technical advice. Always refer to the latest edition of the standard for regulatory compliance.