접촉기,회로 차단기,태양광 인버터,전기 계량기,태양 전지
Model Segment Definition
| 분절 | 의미 | 비고 |
| 3*70 | Applicable cable specification | 3-core cable, conductor cross-section per core 70 mm² |
| QTII | 제품 시리즈 코드 | 3M 2nd generation pre-expanded cold shrink cable termination 체계 (Quality Termination II) |
| 94 | Product type code | Outdoor cold shrink termination, 적합하다 18/30 kV voltage level |
| EB | Insulation material & structure code | Silicone rubber insulation with integrated stress control unit |
| 63 | Conductor cross-section range code | Suitable for 50–150 mm² conductors (some versions fit 95–240 mm²) |
| 4 | Core number & application code | Special for outdoor application of 3-core cables |
- Core Specification Parameters
전기적 매개변수
| 매개변수 | 값 | 설명 |
| 정격전압 | 18/30 kV (맥스 36 kV) | Suitable for medium voltage power system |
| Max System Voltage | 24 kV | IEC 표준 준수 |
| Applicable Cable Type | Wire shield / Tape shield XLPE/EPR insulated power cable | Dedicated for polymer insulated cables |
| Insulation Outer Diameter Range | 21.3–35.0 mm | Typical insulation outer diameter for 3×70 mm² cable |
| Power Frequency Withstand Voltage | 65 kV / 1 분 | Factory test standard |
| Partial Discharge | ≤10 pC | High voltage performance index |
기계 & 환경 매개변수
| 매개변수 | 값 | 설명 |
| 단열재 | High dielectric constant silicone rubber | Permanent radial pressure, excellent weather resistance |
| 유입 방지 | IP68 | Fully dustproof and waterproof, suitable for harsh outdoor environments |
| 작동 온도 | -40℃ ~ +90℃ | Wide temperature range, adapts to extreme climates |
| 기계적 수명 | ≥30 years | 유지보수가 필요 없는 디자인, 긴 서비스 수명 |
| 설치 방법 | Cold shrink type (no heating tools required) | Automatically shrinks by pulling out the support core rope |
| 무게 | 대략. 1.2 kg/set | Complete with all components, convenient for site installation |
Applicable Cable Parameters
| 매개변수 | 적용 범위 | 비고 |
| Conductor Cross-section | 3×50–150 mm² | Some versions fit 3×95–240 mm² |
| 도체 재료 | Copper / Aluminum | Compatible with two mainstream conductor materials |
| Insulation Thickness | 10–15 mm | Standard insulation thickness for medium voltage cables |
| Shield Type | Braided copper wire shield / Wrapped copper tape shield | Fits two common shielding structures |
- 액세서리 목록
| 액세서리 이름 | Qty | 목적 |
| QTII Cold Shrink Termination Body (with integrated stress control) | 3 PC | Provide insulation and stress control |
| Silicone Rubber Insulation Tube | 3 PC | Cable insulation restoration |
| Stress Control Mastic | 1 set | Stress control at branch joint and shield cut-off position |
| Sealing Mastic | 1 set | Top sealing of termination |
| Cleaning Kit (CC-2) | 1 set | Pre-cleaning treatment for cable surface |
| Copper Mesh Grounding Wire | 3 PC | Grounding connection for shielding layer |
| Phase Color Marker (Yellow/Green/Red) | 3 sets | Phase identification |
| Installation Instruction Manual | 1 copy | Detailed installation guidance |
| Support Core Rope Pulling Tool | 1 pc | Assist in pulling core rope during installation |
- Competitor & 브랜드 간 비교
| 상표 | 모델 | 주요 차이점 | 응용 시나리오 |
| Original 3M | 94-EB63-3 | Indoor type, 18/30 kV, 3×25–150 mm² | Indoor connection of medium voltage distribution equipment |
| Original 3M | 94-EB63-1 | Single-core outdoor type, 18/30 kV, 1×50–150 mm² | Outdoor termination for single-core cable |
| 씨줄 | Cold Shrink Termination Series | Similar structure, slightly higher price, same applicable range | Power system supporting, brand preference |
| 슈나이더 | Cold Shrink Termination Series | Different stress control design, slight difference in installation steps | Industrial automation system supporting |
| 국내 대안 | Changyuan / Walen Cold Shrink Termination | Price about 1/2–2/3 of 3M, performance meets national standard | 예산에 민감한 프로젝트, non-critical circuits |
- 선택 지침 & 교체 솔루션
5.1 주요 선택 매개변수
Voltage Level Matching: Confirm system voltage is 18/30 kV; not applicable for 12 kV or above 36 kV systems.
Cable Specification Confirmation:
도체 단면적: 3×70 mm² is well compatible within 50–150 mm² range.
Insulation outer diameter: Must be within 21.3–35.0 mm; otherwise replace model.
Shield type: Only for wire/tape shielded cables; not for non-shielded or aluminum sheathed cables.
설치환경:
Outdoor application: 선택하다 94 시리즈 (outdoor type) with UV resistance and weatherability.
Indoor application: Select indoor type 94-EB63-3.
Installation Tools: No heating tools required; only basic electrician tools and cleaning supplies needed.
5.2 권장 교체 솔루션
| 응용 시나리오 | Recommended Replacement Model | 장점 |
| Direct replacement with same specification | 3M 94-EB63-4 (50–150 mm² applicable) | Original genuine, 완벽하게 호환됨 |
| Large cross-section upgrade | 3M 94-EB63-4 (95–240 mm² applicable) | Fits larger cross-section cables, reserved for future expansion |
| Indoor installation | 3M 94-EB63-3 | Dedicated indoor type, more compact structure |
| Cost optimization | Changyuan CYLS-30/3.1 | High-quality domestic alternative, obvious price advantage |
| 성능 업그레이드 | 3M QTIII Series | 3rd generation cold shrink technology, higher reliability |
5.3 설치시 주의사항
- Cable Pre-treatment
Thoroughly clean cable surface with 3M CC-2 cleaning kit.
Keep smooth transition at shield cut-off to avoid tip discharge.
- 설치 절차
Install branch joint sealing and stress control mastic first, then mount cold shrink termination body.
Pull the core rope steadily at constant speed to avoid termination distortion.
- Safety Regulations
Installers must hold medium voltage cable construction qualification.
Confirm cable power off and fully grounded before construction.
- Quality Control
Perform insulation test and partial discharge test after installation.
Record installation date and test data for future maintenance.
- Product Features Summary
- Maintenance-free Design: Silicone rubber provides permanent radial pressure without regular inspection.
- 쉬운 설치: Cold shrink technology requires no heating tools; single-person installation available.
- 높은 신뢰성: Integrated stress control unit effectively reduces partial discharge risk.
- 강력한 환경 적응성: -40℃~+90℃ operating temperature and IP68 rating suit various harsh environments.
- 폭넓은 호환성: Compatible with multiple specifications of XLPE/EPR insulated cables with high versatility.
3M Medium Voltage Cold Shrink Cable Termination Model List & 선택 가이드
- Model Naming Rule Explanation
3M medium voltage cold shrink cable termination model consists of Series Code + 전압 레벨 + 설치환경 + Insulation OD / Conductor Cross-section + Core Number, clearly reflecting core parameters:
| 분절 | 의미 | 예 |
| QTII/QTIII | Product generation series | QTII = 2nd generation pre-expanded cold shrink; QTIII = 3rd generation cold shrink technology |
| 56xx/76xx | 제품 시리즈 코드 | 56xx = QTII series; 76xx = QTIII series |
| 94/7620/7680 | 전압 & environment code | 94 = 18/30kV outdoor; 7620 = 15kV indoor; 7680 = 35kV outdoor |
| EB63/4-T/150 | Applicable range code | EB63 = fits 50–150mm²; 4-T = fits 23.4–30.0mm insulation OD |
| -0.75 | Core number code | -3 = 3-core indoor; -4 = 3-core outdoor; -1 = single-core outdoor |
| -CN/-TI | 지역 / Special mark | -CN = China market; -TI = Special insulation type adaptation |
- Product Series Overview
3M medium voltage cold shrink cable terminations are mainly divided into two core series: QTII (2nd Gen) and QTIII (3rd Gen), covering 5–35kV voltage level, single-core/3-core, full indoor/outdoor applications.
| 시리즈 | 세대 | 전압 범위 | 핵심 기능 | 일반적인 응용 |
| QTII 5600 시리즈 | 2nd Gen | 5–35 kV | Pre-expanded cold shrink, silicone rubber insulation, integrated stress control | General medium voltage distribution system, 비용 효율적 |
| QTIII 7600 시리즈 | 3rd Gen | 5–35 kV | Grease-free, lower partial discharge, higher reliability | Critical distribution circuits, high reliability required occasions |
| QTII 5680 시리즈 | 2nd Gen | 18/30–26/35 kV | Outdoor type, UV resistance, superior weatherability | Outdoor cable termination for 18/30kV and above |
| QTIII 7690 시리즈 | 3rd Gen | 5–35 kV | Inverted shed design, anti-pollution flashover, suitable for heavily polluted areas | Coastal / industrial area outdoor application |
- Detailed Model List
3.1 QTII Series (2nd Gen Cold Shrink, 5600 시리즈)
3.1.1 18/30kV (24kV) Outdoor Type (94 시리즈)
핵심 기능: Silicone rubber insulation, with rain shed, integrated stress control, suitable for wire/tape shielded XLPE/EPR cables
| 모델 | Applicable Cable Spec | Insulation OD Range | Core Type | 비고 |
| 94-EB63-4 | 3×50–150 mm² | 21.3–35.0 mm | 3-core Outdoor | Most common model for 3×70mm² cable |
| 94-EB63-3 | 3×50–150 mm² | 21.3–35.0 mm | 3-core Indoor | No rain shed, indoor dedicated |
| 94-EB63-1 | 1×50–150 mm² | 21.3–35.0 mm | Single-core Outdoor | Outdoor termination for single-core cable |
| 94-EB64-4 | 3×95–240 mm² | 28.0–45.0 mm | 3-core Outdoor | For large cross-section cables |
| 94-EB64-1 | 1×95–240 mm² | 28.0–45.0 mm | Single-core Outdoor | Outdoor termination for large single-core cable |
3.1.2 8.7/15kV (20kV) 시리즈
핵심 기능: Suitable for 15kV system, 컴팩트한 구조, 쉬운 설치
| 모델 | Applicable Cable Spec | Insulation OD Range | 설치환경 |
| 5601PST-G-CN | 3×35–70 mm² | 16.0–28.0 mm | Indoor / 집 밖의 |
| 5602PST-G1-CN | 3×95–150 mm² | 21.0–35.0 mm | Indoor / 집 밖의 |
| 5602PST-G2-CN | 3×185–240 mm² | 28.0–45.0 mm | Indoor / 집 밖의 |
| 5603PST-G-CN | 3×300–500 mm² | 35.0–55.0 mm | Indoor / 집 밖의 |
| 5620케이 | 1×35–400 mm² | 16.0–45.0 mm | Single-core Outdoor |
3.1.3 26/35kV (40.5kV) 시리즈
핵심 기능: Suitable for 35kV system, 높은 단열 성능, corona resistance design
| 모델 | Applicable Cable Spec | Insulation OD Range | Core Type |
| 5682 | 1×50–150 mm² | 21.0–35.0 mm | Single-core Outdoor |
| 5684 | 1×95–240 mm² | 28.0–45.0 mm | Single-core Outdoor |
| 5683 | 3×50–150 mm² | 21.0–35.0 mm | 3-core Outdoor |
| 5685 | 3×95–240 mm² | 28.0–45.0 mm | 3-core Outdoor |
3.2 QTIII Series (3rd Gen Cold Shrink, 7600 시리즈)
핵심 장점: Grease-free, lower partial discharge (≤5pC), integrated environmental sealing, easier installation
3.2.1 8.7/15kV (20kV) 시리즈
| 모델 | Applicable Cable Spec | Insulation OD Range | 설치환경 | 특징 |
| 7620-S-3 | 3×35–70 mm² | 16.0–28.0 mm | 3-core Indoor | No rain shed, indoor use |
| 7620-S-4 | 3×35–70 mm² | 16.0–28.0 mm | 3-core Outdoor | With rain shed, 옥외 사용 |
| 7620-S-1 | 1×35–70 mm² | 16.0–28.0 mm | Single-core Indoor | Single-core indoor termination |
| 7620-S-2 | 1×35–70 mm² | 16.0–28.0 mm | Single-core Outdoor | Single-core outdoor termination |
| 7693-S-4-3G | 3×95–150 mm² | 23.4–30.0 mm | 3-core Outdoor | For medium cross-section cables |
3.2.2 18/30kV (24kV) 시리즈
| 모델 | Applicable Cable Spec | Insulation OD Range | 설치환경 | 비고 |
| 7642-T-110 | 3×50–150 mm² | 21.3–35.0 mm | 3-core Outdoor | Replacement for QTII 94-EB63-4 |
| 7642-T-150 | 3×95–240 mm² | 28.0–45.0 mm | 3-core Outdoor | Replacement for QTII 94-EB64-4 |
| 7642-T-1 | 1×50–150 mm² | 21.3–35.0 mm | Single-core Outdoor | Single-core outdoor termination |
3.2.3 26/35kV (40.5kV) 시리즈
핵심 기능: High voltage level, anti-pollution flashover design, 열악한 환경에 적합
| 모델 | Applicable Cable Spec | Insulation OD Range | 설치환경 | 디자인 특징 |
| 7680-S-4 | 3×50–150 mm² | 21.0–35.0 mm | 3-core Outdoor | Standard rain shed design |
| 7680-S-1 | 1×50–150 mm² | 21.0–35.0 mm | Single-core Outdoor | Standard rain shed design |
| 7690-S-INV-3RJS | 3×95–240 mm² | 28.0–45.0 mm | 3-core Outdoor | Inverted shed, anti-pollution flashover |
| 7695-T-150 | 3×300–500 mm² | 35.0–55.0 mm | 3-core Indoor | For large cross-section cables |
3.3 특수 응용 시리즈
3.3.1 High Fault Current Series
핵심 기능: Suitable for high short-circuit current system, enhanced insulation design
| 모델 | 전압 레벨 | Applicable Cable Spec | 특징 |
| 7650-S-HSG | 5–35 kV | 1×50–240 mm² | Single-core with connector |
| 7660-S-HSG | 5–35 kV | 3×50–240 mm² | 3-core with connector |
3.3.2 Special Cable Adaptation Series
핵심 기능: Suitable for JCN cables (sheath concentric neutral) and special shielding structure cables
| 모델 | 전압 레벨 | Applicable Cable Type | Insulation OD Range |
| 7654-S-4-TI | 5–25/28 kV | JCN Cable | 21.1–38.9 mm |
| 7654-S-1-TI | 5–25/28 kV | JCN Cable | 21.1–38.9 mm |
- General Specification Comparison Table
General Electrical Parameters (All Series)
| 매개변수 | 값 | 설명 |
| 단열재 | High dielectric constant silicone rubber | Permanent radial pressure, excellent weather resistance |
| 유입 방지 | IP68 | Fully dustproof & waterproof for harsh outdoor conditions |
| 작동 온도 | -40℃ ~ +90℃ | Wide temperature range for extreme climates |
| 기계적 수명 | ≥30 years | Maintenance-free long service life |
| 설치 방법 | Cold shrink type (no heating required) | Self-shrinking by pulling support rope |
| Partial Discharge | QTII: ≤10 pC | HV performance index; QTIII better |
| QTIII: ≤5 pC | ||
| Power Frequency Withstand Voltage | 2.5× rated voltage / 1 분 | Factory acceptance test standard |
Series Key Parameter Comparison
| 시리즈 | Rated Voltage Range | Applicable Conductor Cross-section | Insulation OD Range | Installation Env | Price Level |
| QTII 94 시리즈 | 18/30 kV | 50–240 mm² | 21.3–45.0 mm | Indoor/Outdoor | Mid-to-high |
| QTII 5600 시리즈 | 8.7/15 kV | 35–500 mm² | 16.0–55.0 mm | Indoor/Outdoor | Mid-range |
| QTII 5680 시리즈 | 26/35 kV | 50–240 mm² | 21.0–45.0 mm | 집 밖의 | 고급형 |
| QTIII 7620 시리즈 | 8.7/15 kV | 35–150 mm² | 16.0–30.0 mm | Indoor/Outdoor | Mid-to-high |
| QTIII 7640 시리즈 | 18/30 kV | 50–240 mm² | 21.3–45.0 mm | Indoor/Outdoor | 고급형 |
| QTIII 7680 시리즈 | 26/35 kV | 50–500 mm² | 21.0–55.0 mm | Indoor/Outdoor | 프리미엄 |
- 선택 지침 & 교체 솔루션
5.1 주요 선택 매개변수
Voltage Level Matching
8.7/15kV system: 선택하다 5600 / 7620 시리즈
18/30kV system: 선택하다 94 / 7640 시리즈
26/35kV system: 선택하다 5680 / 7680 시리즈
Cable Specification Confirmation
Conductor cross-section must fall within model applicable range.
Insulation outer diameter strict matching; tolerance ≤±1mm.
Only for XLPE/EPR cables with copper wire/tape shield.
Installation Environment Selection
집 밖의: Select models with rain shed (접미사 -4/-2), UV resistant.
Indoor: Select non-rain shed type (접미사 -3/-1), 컴팩트한 구조.
Heavily polluted area: Prioritize QTIII 7690 series with inverted shed design.
5.2 Replacement Recommendation Table
| 원래 모델 | 직접 교체 | 업그레이드 교체 | Cost-Effective Alternative |
| 94-EB63-4 | 7642-T-110 (QTIII) | 7693-S-4-3G (Anti-pollution) | Changyuan CYLS-30/3.1 |
| 5601PST-G-CN | 7620-S-3 (QTIII) | 7620-S-4 (Outdoor Type) | Walen WRS-15/3.1 |
| 5682 | 7680-S-1 (QTIII) | 7690-S-INV (Inverted Shed) | Domestic 35kV Cold Shrink Termination |
5.3 설치 참고 사항
- Cable Pre-treatment
Clean cable surface thoroughly with 3M CC-2 cleaning kit.
Smooth transition at shield cutting position to avoid corona discharge.
- 설치 단계
QTII series: Install branch sealing & stress mastic first, then termination body.
QTIII series: 통합 디자인, no extra stress mastic needed, simpler installation.
- Safety Regulations
Installers must hold valid medium voltage cable construction qualification.
Ensure cable de-energized and grounded before work.
- Quality Control
Conduct insulation resistance test and partial discharge test after installation.
Record installation date and test data for later maintenance.
- Difference between QTII and QTIII Series
QTIII is 3rd generation technology, grease-free, lower partial discharge (≤5pC), easier installation; price about 20% higher than QTII.
- How to select correct insulation outer diameter range
Measure actual cable main insulation outer diameter, select the smallest model covering the measured size to ensure sufficient radial compression.
- Interchangeability of indoor and outdoor types
Outdoor type can be used indoors; indoor type cannot be used outdoors (no rain shed, insufficient protection).
- Difference for copper core vs aluminum core cable
3M medium voltage cold shrink terminations fit both copper and aluminum conductors without special model selection.
