Description

2 x F28T5 Replacement Ballast

120V

Normal Power Factor

Preheat Start

9″ Slim Case

Keystone Technologies KTEB-228-1-TP-PH-SL is a T5 electronic ballast designed to operate two F28T5 lamps on 120V input. Featuring a preheat starting method and normal power factor performance, this ballast is engineered for reliable operation in commercial and institutional fluorescent lighting systems.Built in a 9-inch slim case (N1 style), this ballast supports parallel lamp connection and includes lamp end-of-life protection for added safety and system longevity.

Product Specifications

• Brand: Keystone Technologies
• Model: KTEB-228-1-TP-PH-SL
• Lamp Type: F28T5 (Also compatible with F21T5 and F14T5)
• Number of Lamps: 2
• Input Voltage: 120V
• Input Frequency: 50/60 Hz
• Starting Method: Preheat
• Lamp Connection: Parallel
• Power Factor: Normal
• Sound Rating: A
• Maximum Case Temperature: 167°F (75°C)
• Minimum Starting Temperature: 0°F (-18°C)
• Class: P, Type 1 Outdoor
• Type HL
• Warranty: 3 Years

Electrical Performance (F28T5)

• Input Watts: 56W
• Input Current: 0.83A
• Ballast Factor: 0.86
• Crest Factor: 1.42
• Ballast Efficacy Factor: 1.54
• Max THD: 130%

Physical Specifications

• Length: 9.50 inches
• Width: 0.95 inches
• Height: 0.95 inches
• Mounting: 8.75 inches
• Case Style: N1 (Slim Case)

Standard Lead Lengths

• Black: 20 inches
• White: 20 inches
• Blue: 48 inches
• Red: 24 inches
• Brown: 48 inches
• Yellow: 24 inches